1. What safety knowledge should be mastered in life?

Electrical lines and electrical equipment must be well insulated, and live parts such as lamp holders, sockets, switches, etc. must not be exposed to prevent electric shock.

Do not connect wires randomly to prevent electric shock or fire. Do not move live objects while standing on wet ground or wipe live household appliances with a damp rag to prevent electric shock.

The selection of fuses must be reasonable. Do not use copper wire, aluminum wire or iron wire instead to prevent fire. The household appliances used, such as refrigerators, freezers, washing machines, etc., should be equipped with grounded sockets according to the product usage requirements.

When inspecting or replacing the lamp holder, even if the switch is turned off, do not touch it directly with your hands to prevent electric shock.

Extended information: Drugs for common diseases: common drugs for respiratory diseases such as colds, asthma, and bronchitis; common drugs for digestive tract diseases such as diarrhea, vomiting, and loss of appetite; others such as cod liver oil, calcium tablets, ENT and Dermatological external medicines, etc.

Commonly used medicines: There are many types of medicines for treating various systemic diseases, and only the commonly used medicines should be prepared at home. There are many drugs with similar effects, so just choose some for later use.

Safe medicine: Children’s medication requirements are strict, and improper use can easily lead to adverse consequences. The backup medicines should be those with few side effects, small toxic reactions, and easy to use.

Easy to use: The medicines commonly kept at home are mainly oral medicines and external medicines. Injectable drugs should be used as little as possible. Improper use and poor control may lead to allergic reactions and poisoning, which may lead to adverse consequences.

Reference material: Common sense of life_Baidu Encyclopedia.

2. What safety knowledge should be mastered in life

1. Safety on the way to school 1. Safety knowledge about walking Every student must keep in mind the following safety knowledge about walking: The green light of the command light is on. When the yellow light is on, pedestrians are allowed to pass; when the yellow light is on, pedestrians are not allowed to pass, but pedestrians who have entered the sidewalk can continue to pass; when the red light is on, pedestrians are not allowed to pass; when the yellow light is flashing, pedestrians must pass under the principle of ensuring safety .

When the green light of the crosswalk signal is on, pedestrians are allowed to pass the crosswalk; when the green light is flashing, pedestrians are not allowed to enter the crosswalk, but those who have already entered the crosswalk can continue to pass; when the red light is on, pedestrians are not allowed to enter the crosswalk. Pedestrians must abide by the regulations. Pedestrians must walk on the sidewalk and walk on the right side when there is no sidewalk. When crossing the road, you must use a crosswalk. When passing a crosswalk controlled by traffic signals, you must obey the signal regulations. When passing a sidewalk without traffic signal control, you must look left and right and pay attention. Vehicles coming and going are not allowed to chase or run; if there is no crosswalk, you must go straight through, and you are not allowed to cross suddenly when a vehicle approaches; if there is a pedestrian overpass or underpass, you must use the overpass or underpass; you are not allowed to climb on the side of the road or in the road Guardrails and isolation barriers do not allow pushing cars, chasing cars, forcibly stopping cars, or throwing objects at cars on the road.

What are the most dangerous situations when walking? (1) Crossing the road can easily lead to danger. (2) Walking sideways in groups on non-pavements is the most likely to cause traffic accidents.

(3) After the peak hours of commuting and get off work, there are few vehicles on the road, because the lack of cars and people on the road numbs the mind. Paralysis plus paralysis equals danger.

(4) Do two things while walking. Read a book while walking, or think about problems while walking, or chat while walking, or play while walking... If you do this, the car may not hit you, and you will go there by yourself. Crash the car, so it's also very dangerous. 2. Cycling safety (1) Children under 12 years old are not allowed to ride on the road.

This is stipulated by traffic regulations. (2) Cycling without an umbrella.

(3) Ride without taking your hands off. (4) Do not ride with others.

(5) Do not ride "sick" bikes. (6) Don’t ride fast.

(7) Do not compete with motor vehicles. (8) Do not ride in parallel.

Finally, please note that you should not ride a bicycle in bad weather such as thunderstorms, typhoons, snow, or when the snow has not melted or the roads are icy.

3. Riding safety (1) Before getting on the bus, first check which route the bus is on, because bus stops are often the same platform for several buses. It is easy to get on the bus in a hurry. Take the wrong bus.

(2) Wait until the car has stopped before getting in or out of the car. When getting on the bus, place your schoolbag in front of your chest to prevent it from being squeezed out or being rolled over by the door. (3) After getting on the bus, do not crowd around the door. Walk inside, stand firm when you see an empty space, and grab the handrails. Do not extend your head, hands, or body out of the window, otherwise injuries may easily occur.

(4) When riding in a car, you must respect the elderly, love the young, and be polite. When you see the elderly, the weak, the sick, or pregnant women, you must take the initiative to give up your seat. (5) Do not read while riding in the car, otherwise it will damage your eyes.

2. Pay attention to safety when playing in your spare time. The main thing in your spare time is to have a good rest and prepare for class. When class is over, do not push or push in the hallway or chase after each other on campus.

To avoid collision with each other and cause harm. 3. Do not play dangerous games among classmates. Playing games can increase knowledge and exercise.

But some games are very dangerous, ranging from hurting people to life-threatening. What games can't be played? First, "Pull out the carrot": One person holds another person's head with both hands and pulls it up.

This kind of game can easily cause cervical dislocation or fracture. Second, "squeezing": everyone pushes a person in a corner and squeezes hard.

This kind of game can easily cause suffocation, chest bleeding and even be life-threatening. Third, "smashing and tamping": Four people each hold one person's arm and one leg, and forcefully push the person into the ground.

This game often results in tailbone fractures. Fourth, do not use glass toys, violent toys (slingshots, bows and arrows, toy guns that fire bullets), or toys containing chemical properties during games.

Fifth, do not engage in "surprise attack" jokes during games, such as suddenly shouting behind classmates or slapping each other on the head. 4. Self-protection in sports activities Regular participation in sports activities can enhance your physical fitness and better learn cultural knowledge, but you must pay attention to safety: First, put on rubber-soled sports shoes before exercising.

Sports shoes have high elasticity and high friction, while shoes with plastic soles are hard and slippery, making them unsuitable for exercise. Second, you must carefully prepare your whole body for activities, otherwise muscle strains, sprains, fractures, etc. may occur.

Third, before exercising, girls should take off hairpins, plastic or glass accessories, and boys should not carry knives and other sharp objects under their clothes. Fourth, you must do equipment sports under the protection of teachers or peers; such as single-pole and double-pole sports, strictly follow the teacher's requirements, especially when throwing javelins and shot put, you cannot throw or retrieve them without authorization, otherwise there will be consequences. You may be hit and injured, or even life-threatening.

Fifth, once you fall and get injured, don’t get up in a hurry, and don’t move the injured classmate around. Wait for the school doctor or teacher to deal with it. Sixth, do not drink cold water after exercise in summer. You can drink some light salt water to prevent heatstroke. Wipe off sweat and put on clothes in time after exercise, and do not take a shower immediately to prevent colds.

Do not do strenuous exercise before or after meals and before going to bed. 5. Do not light mosquito coils or candles in the dormitory. The dormitory is a place for rest.

Some students study very hard and often use flashlights to read for a while after turning off the lights. Some even use candles for lighting. In fact, this is not advisable behavior. Because this affects the rest of others and cannot ensure that you get adequate rest, and there are potential safety hazards.

In addition, in summer, some students like to use mosquito coils to drive away mosquitoes, which can also cause fires. Because when you are asleep, turning around sometimes causes the quilt or clothes to fall from the bed onto the mosquito coils, causing a fire.

6. Eight "don'ts" should be done: 1. Don't pour boiling water out of the window. 2. Do not stand on the windowsill to clean the glass.

3. Do not wear glasses when playing ball.

3. What safety issues should be paid attention to in daily life

1. Be wary of the gap between the subway screen door and the carriage door.

When the car door is about to close, it is better to wait instead of rushing to the door. If by chance it happens to be caught in the gap between the screen door and the compartment door when it closes, be sure to slam the window and door vigorously and ask the passengers in the compartment to help you pull it out. Exit the emergency stop.

2. Remember to fasten your seat belt. When braking suddenly or crashing, everyone in the car will quickly lean forward. If the rear passengers are not wearing seat belts, they will be caught off guard and directly hit the front seats. He even broke through the front windshield and was thrown out of the car.

3. Be wary of falling objects from high altitudes. When walking in areas with older buildings, avoid walking under walls as much as possible, because facilities such as air conditioner outdoor units, exterior bay windows, and security nets are likely to have aged. If you encounter typhoon weather, you should hide at home as much as possible. Casualties caused by such falling objects from high altitude are now very common.

4. Be wary of escalator stampede accidents. If the density of escalators is visually too high (too crowded to move), try to walk up the stairs while walking. If someone falls or cannot get out of the escalator normally, it will cause a series of stampede accidents, which is very scary.

5. Be wary of hidden dangers in swimming pools. Try to stay away from the drain of the swimming pool. Otherwise, with the weight of the entire swimming pool water, you will never be able to escape by your own strength after being sucked.

4. What safety issues should be paid attention to in daily life

In daily life, students will encounter some safety problems. If we have a strong safety awareness and necessary safety common sense, , and if you can use the basic knowledge you have learned to solve some related problems, you can avoid some safety accidents.

An example analysis and explanation is as follows: 1. Setting off fireworks and firecrackers Example 1 On New Year's Eve in 2000, an accident caused by setting off firecrackers occurred in an area where fireworks and firecrackers are prohibited in Fengtai District, Beijing. What happened was this: several children stuffed lit firecrackers into the septic tank, causing an explosion of biogas in the septic tank and blowing up the iron manhole cover. One of the iron blocks hit a girl, who was unfortunate. Death.

Please answer the following questions based on the above materials. (1) The main component of biogas is ____________, and its explosion limit in air is 5 to 15 (volume fraction) of this gas.

When 1g of this gas is completely burned to produce liquid water, the heat released is Q1 = 55.626kJ. Then the thermochemical equation of the combustion of this gas is __________________. (2) If the septic tank shaft is a cylinder with a diameter d=0.7m and a height h=3m, the gas in it contains biogas 5.

The manhole cover of a septic tank has a mass of M=20kg and is exploded into 10 pieces on average. What is the speed at which the iron pieces fly out? (Assume that the gas in the septic tank is in a standard state) Analysis (1) The main component of biogas is methane (CH4); because 1g CH4 releases heat Q1 = 55.626kJ when it is completely burned to form liquid water, so when 1 mol of CH4 is completely burned to form liquid water Heat release (12 1*4) Q1=16*55.626kJ=890kJ. Therefore, the thermochemical equation of gas combustion is CH4(g) 2O2(g)CO2(g) 2H2O 890kJ (2) Assume the volume of the septic tank shaft is V1, and the volume of biogas is V2, then V1=π(d/2)2h=3.14*(0.7/2)2*3 m3=1.154m3=1154L, V2=5V1=5*1154L=57.7L, The amount of substance n= V2/V0=57.7/22.4mol=2.58mol (V0 is the molar volume of biogas). The total energy released by the complete combustion of methane is E=n*890kJ=2.58*890kJ=2296.2kJ≈2.30*106J , the kinetic energy of each piece of iron is E1=E/10=2.30*105J. Assume m and v are the mass of each iron block and the speed when it flies out, then m=M/10=20/10㎏=2㎏, so we get .

2. Use of Liquefied Petroleum Gas Example 2 Liquefied petroleum gas has been widely used in the kitchens of modern families. Its main component is a mixture of alkanes and alkenes. Here is a list of the boiling points of each component at 1 standard atmospheric pressure. As shown in Table 1: Table 1 Name Methane Ethane Propane Butane Pentane Ethylene Propylene Butene Pentene Boiling Point °C -161.7 -88.6 -42.2 -0.5 36.1 -102.4 -47.7 -6.5 30.1 Please answer: (1) Someone discovered liquefaction After the LPG is used up, the liquid remaining in the cylinder can dissolve grease, so it is poured out to be used as a detergent to wash away oil stains on objects. Is this waste utilization approach advisable? Maximum filling volume of filling medium Actual measured volume Airtight test pressure Liquefied petroleum gas 15kg 35.5L 2.1MPa (2) In order to make full use of the remaining liquid in the bottle, some people use a fire meter 2 to bake the cylinder. The cylinder is marked with the following Nameplate shown in Table 2. If the mass of the liquid remaining in the bottle is m=0.75kg, and the valve is closed, please estimate how high the temperature in the bottle will rise to in degrees Celsius before a danger occurs.

[It is known that 1 standard atmospheric pressure p0=1.013*105Pa, the ratio of the product of pressure and volume of each mole of gas to its thermodynamic temperature R=pV/T=8.31J/(mol·K) 〕 Analysis (1) It can be seen from Table 1 that at normal temperature, as the pressure inside the bottle decreases, the liquid with a low boiling point vaporizes first, so the residual liquid is a liquid with a boiling point higher than normal temperature. The remaining liquid in the bottle is mainly pentane (36.1°C) and pentene (30.1°C) with relatively high boiling points. These two organic compounds are more likely to volatilize into gases in the air. When these gases reach a certain proportion indoors, if An open flame will cause a fire, so it is not advisable to use the residual liquid of liquefied petroleum gas as a cleaning agent.

(2) Although the liquefied petroleum gas is "used up", at normal temperature (taken as 300K), there are still residual gases mainly composed of butane and butene in the bottle (the two are in a Vaporizes later under standard atmospheric pressure), according to the Clapeyron equation, the amount of its substance can be calculated n1=(p0V)/(T1R)=(1.013*105*35.5*10-3)/(300*8.31)mol=1.44mol . In the residual liquid, the molar mass of pentane C5H12 μ1 = (12*5 1*12) g/mol = 72g/mol, and the molar mass of pentene C5H10 μ2 = (12*5 1*12) g/mol =70g /mol.

The average molar mass μ=(μ1 μ2)/2=(72 70)/2 g/mol =71g/mol when the two are mixed, so the amount of the residual liquid n2=m/ μ=（750/71）mol=10.56mol. At high temperature, the residual liquid is completely vaporized, and the amount of gas in the bottle is n=n1 n2=(1.44 10.56)mol=12mol. Take the vaporized residual liquid in the bottle as the research object, treat it as an ideal gas, and pay attention to its mass. must.

Under standard conditions, p1=p0=1.013*105Pa, V1=nV0=12*22.4L, T1=T0=273K; from the data provided in Table 2, it can be seen that when danger occurs, p2=2.1Mpa =2.1*106Pa, V2=35.5L, T2=? According to the ideal gas equation of state: then t2=T2-273=(747-273) ℃=474℃, that is, danger will occur when the temperature in the bottle rises to 474℃. Note: The Clapeyron equation can also be used to solve T2. Readers are asked to analyze it themselves.

3. Use of pipe gas Example 3 The pipe gas in cities is a mixture of water gas and coke oven gas. A pipeline gas leakage and explosion occurred in the kitchen of a resident on the fourth floor of a certain residence. Emergency personnel rushed to the scene quickly and escorted the injured and those suffering from gas poisoning to the hospital for rescue.

(1) Write the chemical reaction equation for producing water gas. (2) Briefly explain the main reasons why pipeline gas poisons people.

(3) The investigators found that the leakage rate of the household’s gas leakage point was a=6.0g/min, and the investigation found that the gas exploded when it reached the indoor air quality of eta=6. Q: How many hours had the gas leaked when the explosion occurred? (Assume that the volume of air in the kitchen is V=25m3.) (4) During the explosion, the temperature of the kitchen can quickly rise to t=1800°C. Estimate the gas pressure generated at this time to be approximately how many pascals.

Analysis (1) C H2O CO H2 (2) Carbon monoxide (CO) deprives the hemoglobin of oxygen in the human blood, thus putting the human tissue in a state of hypoxia and poisoning. (3) We know that under standard conditions, the density of air is ρ=1.29kg/m3, then the air in the kitchen is.

5. Safety common sense in life

Avoid overloading the home power supply. Old and aging power supplies should be replaced in time to avoid accidents.

. The main insurance for household power supply and the household insurance should be reasonably configured so that they can protect household appliances. . Use qualified power cords when connecting to temporary power sources.

The power plugs and sockets must be safe and reliable. Damaged ones cannot be used. The power cord connectors must be wrapped with black tape. .When temporary power lines are close to high-voltage transmission lines, a sufficient safe distance should be maintained from the high-voltage transmission lines.

(10KV and below 0.7 meters, 35KV 1 meter, 110KV 1.5 meters, 220KV 3 meters, 500KV 5 meters). .Private wiring from public lines is strictly prohibited.

.Line connectors should ensure good contact and reliable connection. . For room decoration, the power cord hidden in the wall should be placed in a special flame-retardant sheath, and the cross-section of the power cord should meet the load requirements.

. Wear insulating gloves when using power tools such as electric drills. .If a household appliance catches fire, you should cut off the power supply first and then put out the fire.

. The wiring of household appliances must be ensured correctly. If you have any questions, you should ask professionals. . Household electricity should be equipped with qualified leakage protectors with over-voltage protection to ensure personal safety when using household appliances.

When household appliances are in use, their shells should be well grounded, and a public ground wire should be installed indoors. .When household appliances are in use, their shells should be well grounded, and a public ground wire should be installed indoors.

. Do not touch live household appliances with wet hands, do not wipe household appliances in use with wet cloth, and the power supply must be turned off before repairing household appliances. .Household electrical appliances, electric heating equipment, and heating equipment must be kept away from gas tanks and gas pipes. When gas leakage is found, open windows for ventilation first. Do not turn off the power supply, and ask professionals to repair it in time.

When using electric irons, soldering irons and other electric heating devices, you must keep them away from flammable objects. Cut off the power supply after use and unplug the plugs to prevent accidents. .If a household appliance is found to be damaged, please ask a trained professional to repair it. Do not disassemble it yourself to prevent electric shock and injury.

It is strictly prohibited to dig wells, erect TV antennas and fish under high and low voltage power lines. .If a wire is found to be broken, whether it is live or not, it should be regarded as live. A sufficient safe distance should be kept from the point where the wire is broken, and a report should be made to the relevant department in a timely manner.

If someone is found to have received an electric shock, do not touch the person who received the electric shock directly. Use a wooden stick or other insulator to separate the power cord to remove the person who received the electric shock from the power source. .Place power plugs and sockets out of the reach of young children, and frequently explain to the elderly and children at home the common sense of safe electricity use in the home, so as to enhance the self-protection abilities of the elderly and children.

If the entrance wire is found to be in direct contact with trees or buildings, in order to prevent the wire from being worn out, the trees should be cut down in time, or insulating sleeves should be added to the entrance wire. .When walking on urban sidewalks during thunderstorms, do not touch trees, poles and pole wires with your hands to prevent electric shock.

.Do not approach or touch the live parts of any electrical home appliances, especially the high-voltage line output parts of black and white and color TVs, to avoid being injured by electric shock. .If the power switch housing and wire insulation are damaged and incomplete or the live parts are exposed, you should find an electrician to repair it immediately, otherwise it is not allowed to be used.

. Do not use the same cable for telephone lines and power lines for convenience. Use different wires or cables separately and keep them at a certain distance when laying them. . Do not use steel rulers or tape or wire rulers with metal wires to measure on live household appliances or around worn wires.

. It is prohibited to tie animals, ropes, or cold objects to the wires of electric poles to avoid electric shock. .Household doorbells and electric clippers are prohibited from using 220V power supply voltage, and safety voltages below 36V should be used.

. Household electric showers must be disconnected from the power supply when taking a bath, and reliable measures must be taken to prevent sudden electrification. . We must promote civilized and law-abiding use of electricity and prevent all forms of illegal and illegal electricity theft from electric shock.

(Safety Culture Network).

6. Campus safety knowledge

How to prevent burns? Burns are common accidents in life.

In family life, the most common ones are burns caused by hot water, hot oil, etc. How to prevent burns? 1. When moving the kettle or hot oil pan from the fire, you should wear gloves and pad it with cloth to prevent direct burns; the kettle and hot oil pan should be placed in a place where people cannot easily touch them.

2. Parents should not play around or disturb others when cooking or frying food to prevent burns from splashing hot oil; older students should concentrate when learning to cook. , do not drop water into the hot oil, otherwise the hot oil will splash when it meets the water and burn people. 3. Oil is flammable and will burn at high temperatures. When cooking, be sure to prevent the oil from being too hot and causing a fire.

If the oil in the pot catches fire, do not panic. Cover the pot with a lid as soon as possible, and quickly remove the oil pot from the fire or extinguish the fire. 4. Heating appliances such as electric irons and electric heaters at home can cause burns. You should be particularly careful when using them, especially do not touch them casually.

How to use electricity safely? With the continuous improvement of living standards, more and more places use electricity in life. Therefore, it is necessary for us to master the following basic knowledge about safe use of electricity: l. Understand the main power switch and learn to turn off the main power supply in an emergency.

2. Do not touch or test the inside of the power socket with your hands or conductive objects (such as wire, nails, pins and other metal products). 3. Do not touch electrical appliances with wet hands or wipe them with wet cloth.

4. Unplug the power plug after using the electrical appliance; do not pull the wire hard when plugging or unplugging the power plug to prevent damage to the insulation layer of the wire and cause electric shock; if the insulation of the wire peels off, replace it in time New wires or wrap them with insulating tape. 5. If you find someone getting an electric shock, you should try to turn off the power in time; or use dry wooden sticks and other objects to separate the electric shock person from the live electrical appliances; do not use your hands to save the person directly; if younger students encounter this situation, they should call an adult Ask someone for help, do not handle it yourself to avoid electric shock.

6. Do not disassemble or install power lines, sockets, plugs, etc. at will. Even simple things such as installing light bulbs must be turned off first and done under the guidance of parents.

How to use electrical appliances safely? Nowadays, more and more household appliances such as televisions, refrigerators, washing machines, electric irons, hair dryers, and electric fans have entered homes. When using household appliances, in addition to paying attention to the safe use of electricity, you should also pay attention to the following points: 1. Various household appliances have different uses and different methods of use, and some are more complicated.

General household appliances should be learned to use under the guidance of parents. For more dangerous appliances, do not use them alone. 2. If you find that the electrical appliance emits smoke, sparks, or a burnt smell during use, you should immediately turn off the power switch and stop using it.

3. Hair dryers, rice cookers, electric irons, electric heaters and other electrical appliances will emit high heat during use. Care should be taken to keep them away from flammable items such as paper and cotton to prevent fire; at the same time, Be careful to avoid burns when using. 4. Avoid using electrical appliances in humid environments (such as bathrooms), and do not let electrical appliances get wet or damp. This will not only damage the electrical appliances, but also cause the risk of electric shock.

5. The blades of electric fans and the dehydration drum of washing machines rotate at high speed during operation. Do not touch them with hands or other objects to prevent injury. 6. In the event of a thunderstorm, stop using the TV and unplug the outdoor antenna to prevent lightning strikes.

7. If electrical appliances are left unused for a long time, they are easily damaged by moisture and corrosion. They need to be carefully inspected before reuse. 8. When purchasing household appliances, choose qualified products with reliable quality.

How should we pay attention to safety when doing activities in the home? There are many seemingly small things that students should pay attention to when doing activities at home. Otherwise, dangers may easily occur. This mainly includes the following aspects: l. Anti-collision.

At present, the living space of most families is relatively small, and there are many furniture and other daily necessities placed. Therefore, you should not chase, fight, or do strenuous sports and games in the room to prevent injuries from collisions. 2. Anti-slip and anti-fall.

The floor in the living room is relatively smooth, so be careful to prevent injuries from slipping. When you need to climb up to clean or pick up items, ask others to protect you to prevent injuries from falling. 3. Anti-fall.

When you live in a building, especially if you live on a high floor, do not lean out of the balcony or window to avoid the risk of falling. 4. Anti-extrusion.

It is easy to cover the doors and windows of the living room, cabinet doors, drawers of furniture, etc. when opening and closing, so you should be careful at all times. 5. Fire prevention.

There are many flammable items in the living room, such as wooden furniture, bedding, curtains, books, etc., so pay attention to fire prevention. Don't play with fire in the room, let alone set off firecrackers in the room.

6. Prevent accidents and harm. Sharp tools such as screwdrivers, knives, and scissors, and stationery such as thumbtacks and pins should be stored properly after use and should not be left on beds or chairs to prevent accidental injuries.

What should I do if I get burned? If burns occur in daily life, you can take the following measures: l. For mild burns with only slight redness and swelling, you can rinse repeatedly with cold water and then apply some cooling oil. 2. If small blisters have formed on the burned area, do not break them. You can rub alcohol around the blisters and wrap them with clean gauze.

3. If the burn is serious, it should be sent to the hospital for diagnosis and treatment in time. 4. If the burn area is large, you should take off your clothes, pants, shoes and socks as soon as possible, but do not tear them off by force. If necessary, you should cut the clothes; after the burn, pay special attention to the cleanliness of the burn area, and do not apply topical drugs or drugs at will. substitutes to prevent infection and make hospital treatment more difficult.

The correct method is to take off the patient's clothes and wrap them in a clean towel or sheet. What should I do if I suffer a trauma? If you suffer a serious injury, you need to be sent to the hospital for treatment.

For relatively minor injuries, you can handle them as follows: 1. If there is a wound and bleeding, you need to clean the wound and apply disinfectant and anti-inflammatory external medicine, such as anti-inflammatory powder, red lotion, band-aid, etc. In addition, you should also pay attention to: keep the wound area warm and dry; eat more eggs, lean meat, beans, dairy and other protein-rich foods; take vitamin C appropriately or eat more fresh vegetables and fruits; change dressings reasonably and maintain clean.

Doing so will help the wound heal. 2. For sprained muscles, joints, ligaments, etc., do not apply heat or apply heat immediately to avoid aggravating subcutaneous bleeding and swelling.

The activity should be stopped immediately, the injured area should be fully rested, and a cold compress or cold water should be applied.

7. What safety knowledge should be paid attention to in life?

With the increase in the number of students studying abroad in the United States, reports on the safety crisis of studying abroad have frequently appeared in the newspapers. Young students come alone to a foreign country with huge differences in language, culture, and social systems. How to integrate into the local area as soon as possible and learn to protect their personal and property safety can be said to be the first lesson before them. Required course.

Students who choose to study abroad should have an understanding of the local laws, regulations and related policies of the country where they are studying, and learn to be brave enough to use the law to protect their legal rights when they encounter problems.

After arriving in the country of study abroad, you must register with the Chinese embassy abroad so that you can receive timely protection in the event of a disaster similar to the tsunami in Libya or Japan. Many schools now also require students to report to the local embassy when enrolling and fill in the detailed information of their personal and domestic and foreign contacts.

Different countries have different customs and religious beliefs, so international students need to do enough homework before going abroad to eliminate some misunderstandings and better integrate into the local area.

Eastern culture values ??implicitness and often expresses its need for help through hints. Westerners, on the other hand, pay more attention to directness and frankness and emphasize personal independence. If you don't ask directly, they may not know you need help. When studying abroad, learning to ask for help is also a sign of maturity.

After arriving at the place of study, you can learn about relevant help organizations in time, make friends with local people, and expand your social circle.

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