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A popular science essay about Sichuan earthquake (about 400 words), including: what is an earthquake, what are its precursors and how to escape.
Countermeasures to Reduce Man-made Disasters The painful lessons of historical earthquakes have raised a very important question for us, that is, how to effectively reduce man-made disasters in the event of future earthquakes, and how to truly remain calm, improvise, assess the situation and save lives in the face of earthquakes at the horrible moment. (1), disaster reduction countermeasures, units and social groups are the basic units and important components of cities, and the improvement of their seismic capacity is very important for reducing earthquake disasters. 1, all units should regard earthquake-resistant work as a major event, put it on an important agenda and target responsibility system during the leadership term; 2. Carry out extensive publicity and education, popularize earthquake and earthquake science knowledge, and improve employees' earthquake awareness and emergency response ability. 3, organize earthquake disaster prevention exercises and professional team training and education, improve technical quality and rapid response ability; 4, schools, kindergartens, clubs and farmers' markets and other places where people are concentrated should prepare emergency plans and implement various disaster prevention measures; 5, important parts and posts, should have strict discipline and safety operation procedures, it is strictly prohibited to escape from the post during the earthquake or cause undue disaster due to misoperation. 6. After the short-term forecast is released, it is necessary to make clear the fire safety of the earthquake-proof shed built by the masses, do a good job in publicity, organize inspections in time, and nip in the bud. (II) Family emergency countermeasures The family is the cell of society, and the implementation of family emergency countermeasures is of great significance to earthquake prevention and disaster reduction. 1, family members should fully understand the specific requirements of pre-earthquake preparation, imminent earthquake emergency, self-rescue during earthquake, emergency rescue at the end of earthquake and post-earthquake disaster relief; 2. Every family member should know the environmental conditions around the residence, as well as the site, route and relevant regulations for shock absorption; 3. Every family member should be familiar with the position of water and electricity gates and valves and the operation requirements for emergency stop of gas stoves; 4. Every family member should know the basic knowledge of emergency rescue and disaster relief and learn simple first aid methods; 5. Before the earthquake, it is necessary to clean up the explosive and flammable items in the home, the overhead items that are easy to collapse, and the dangerous items such as flowerpots and bricks on the balcony; 6, after the release of short-term forecast or a large number of macro precursor abnormal earthquake situation is very nervous, should establish a family emergency box (package) for earthquake resistance and disaster prevention, and prepare the necessary cooked food, drinking water, flashlights, candles, commonly used drugs, small radios, etc. For post-earthquake use. (3) Personal self-help countermeasures Whether people's response behavior is correct in a short time after the earthquake is the key to reducing man-made disasters. 1, people who live in bungalows, if there are open fields outside, can judge the situation during the earthquake, improvise, go out for shock absorption as quickly as possible or hide in a safer place indoors; 2. People living in buildings should not panic and jump off buildings or flee during the earthquake. They should immediately hide in furniture, beds, tables or stoves, toilets and rooms with small spaces, and evacuate immediately after the main earthquake; 3. If the earthquake occurs at night, don't look for clothes or wear clothes to delay the time, and race against time to immediately move to a safe place or hide nearby; 4. During the earthquake, anyone who escapes from the house should not stay in narrow alleys or high-rise buildings or near high-voltage lines; 5. When the earthquake occurs, the on-the-job personnel should be calm and decisive, immediately cut off the power supply, close the gate valves of toxic, harmful, flammable and explosive articles, stop oil and gas transportation, and then take shock-proof measures nearby; 6, after the main earthquake, don't immediately enter the room, to prevent strong aftershocks, so as not to cause casualties.