Fans, formerly known as "bottles", have a history of more than 3,000 years in China.
It is said that there were already cattail fans and bamboo fans in China at that time. At first, people used them not to cool down, but as decorations. The cars of Wang and Hou in the Zhou Dynasty all had "fans" to cover the dust, which were called "barrier fans". Later feudal emperors and senior officials used obstacle fans to show their prestige during their ceremonial trips.
According to Bao's Notes on Ancient and Modern Times, the earliest fan was a long-handled fan made by Yin without pheasant tail, but it was not used for cooling, but a ceremonial ornament. Held high by the holder to protect the emperor from the sun.
After the Han Dynasty, bamboo fans in Hunan and silk fans in Shandong were widely used to enjoy the cool, and their forms gradually increased, from daily necessities to works of art. This is recorded in detail in the book Miscellanies of Xijing.
According to records, most of the ten thousand fans at that time were made of silk and other silk fabrics. It is said that there was a high-tech craftsman named Ding Huan in Chang 'an at that time. He once made a big "seven-wheeled fan", which only needed one person to operate, so that people in the hall could feel cool.
It seems that this kind of fan may be the originator of ceiling fan and desk fan in our life. Legend has it that Yang Xiuzeng and Cao Cao painted fans in the Three Kingdoms.
Therefore, fans are mainly used to drive away the summer heat and can also be used as handicrafts. People can paint, carve all kinds of flowers, birds and scenery on the fan, or write poems, which is quite elegant.
Wang Xizhi, a great calligrapher in Jin Dynasty, saw an old woman selling hexagonal bamboo fans and wrote five words on each bamboo fan. The old woman was very unhappy. Wang Xizhi said, "But this is Wang Youjun's book, in order to get 100 yuan."
The old woman sold it, and sure enough, people rushed to buy it. There are many famous masterpieces of painting fans in the history of China, such as the bamboo finch fan in Zhou Zhimian in Ming Dynasty, the dead west Western jackdaw fan in Tang Yin, the step fan in Shen Dynasty, the chrysanthemum fan in Qing Dynasty and the purple bird fan.
Now, our country's fan is famous as a handicraft. Guo Moruo once wrote a poem for fan factory workers: the cool world comes from both hands.
More clever than a ghost axe, more clever. Flying all over the world, overwhelming the west wind.
Fans can also show a certain psychological state of people. Su Dongpo described Zhou Yu's demeanor with the phrase "heroic and heroic hair, black silk scarf with feather fan".
Du Mu described the girls' lively attitude and happy mood with the poem "waving a small fan at a firefly". Wang Jian, a poet in the Tang Dynasty, wrote in the Joking Order: "Four fans, four fans, the beauty will cover her face."
Describe the sadness of a beautiful woman hiding her face with a fan. "The summer sun is like fire, and the wild Tian He rice is half withered.
The farmer's heart is like soup, and the son Wang Sun shakes it. "Fan, unearned exploiters can increase face, carved out.
Some literary works also use fans as tokens of love. "Peach Blossom Fan" recorded "a handle" and "an eternal token of love" for Li. Later, Li was resisted by the right to rape, and Fan was stained with blood. Yang Longyou touched it and painted it as a peach blossom fan.
I hope big brother will give points.
2. Some knowledge of fans
Fans, formerly known as "bottles", have a history of more than 3,000 years in China.
It is said that there were already cattail fans and bamboo fans in China at that time. At first, people used them not to cool down, but as decorations. The cars of Wang and Hou in the Zhou Dynasty all had "fans" to cover the dust, which were called "barrier fans". Later feudal emperors and senior officials used obstacle fans to show their prestige during their ceremonial trips.
According to Bao's Notes on Ancient and Modern Times, the earliest fan was a long-handled fan made by Yin without pheasant tail, but it was not used for cooling, but a ceremonial ornament. Held high by the holder to protect the emperor from the sun.
After the Han Dynasty, bamboo fans in Hunan and silk fans in Shandong were widely used to enjoy the cool, and their forms gradually increased, from daily necessities to works of art. This is recorded in detail in the book Miscellanies of Xijing.
According to records, most of the ten thousand fans at that time were made of silk and other silk fabrics. It is said that there was a high-tech craftsman named Ding Huan in Chang 'an at that time. He once made a big "seven-wheeled fan", which only needed one person to operate, so that people in the hall could feel cool.
It seems that this kind of fan may be the originator of ceiling fan and desk fan in our life. Legend has it that Yang Xiuzeng and Cao Cao painted fans in the Three Kingdoms.
Therefore, fans are mainly used to drive away the summer heat and can also be used as handicrafts. People can paint, carve all kinds of flowers, birds and scenery on the fan, or write poems, which is quite elegant.
Wang Xizhi, a great calligrapher in Jin Dynasty, saw an old woman selling hexagonal bamboo fans and wrote five words on each bamboo fan. The old woman was very unhappy. Wang Xizhi said, "But this is Wang Youjun's book, in order to get 100 yuan."
The old woman sold it, and sure enough, people rushed to buy it. There are many famous masterpieces of painting fans in the history of China, such as the bamboo finch fan in Zhou Zhimian in Ming Dynasty, the dead west Western jackdaw fan in Tang Yin, the step fan in Shen Dynasty, the chrysanthemum fan in Qing Dynasty and the purple bird fan.
Now, our country's fan is famous as a handicraft. Guo Moruo once wrote a poem for fan factory workers: the cool world comes from both hands.
More clever than a ghost axe, more clever. Flying all over the world, overwhelming the west wind.
Fans can also show a certain psychological state of people. Su Dongpo described Zhou Yu's demeanor with the phrase "heroic and heroic hair, black silk scarf with feather fan".
Du Mu described the girls' lively attitude and happy mood with the poem "waving a small fan at a firefly". Wang Jian, a poet in the Tang Dynasty, wrote in the Joking Order: "Four fans, four fans, the beauty will cover her face."
Describe the sadness of a beautiful woman hiding her face with a fan. "The summer sun is like fire, and the wild Tian He rice is half withered.
The farmer's heart is like soup, and the son Wang Sun shakes it. "Fan, unearned exploiters can increase face, carved out.
Some literary works also use fans as tokens of love. "Peach Blossom Fan" recorded "a handle" and "an eternal token of love" for Li. Later, Li was resisted by the right to rape, and Fan was stained with blood. Yang Longyou touched it and painted it as a peach blossom fan.
I hope big brother will give points.
I want to write some travel tips on a small fan and send them to Jiuzhaigou.
There are too many tips about travel first aid, but the content of each fan can be different. First, briefly introduce several kinds: when a sprain occurs, don't rub it with your hands. You can apply cold water (ice) 15 minutes, and then wrap it with a handkerchief.
You can also use common dandelion and purslane to mash and apply externally. Traumatic bleeding should be washed with clear water (such as boiling water in a kettle) and then wrapped with a towel.
If there is still bleeding, you can use compression to stop bleeding (there are two kinds of compression to stop bleeding: one is to directly compress the wound, which can effectively stop bleeding whether it is directly pressed against the bleeding site with clean gauze or other cloth items. The other is pressure hemostasis.
Press your finger on the adjacent bone near the heart of the bleeding artery to block the source of blood supply, thus achieving the purpose of hemostasis. After 1 hour, relax every 10 minute to ensure blood circulation. If you are bitten by a poisonous snake in the wild, you need to quickly tie the upper part of the wound with a cloth to prevent the toxin from spreading through blood circulation. Then, use a sterilized knife to draw a knife edge with a length of about 1 cm and a depth of 0.5 cm on the wound, and suck out the venom with your mouth.
In the event of fainting, it is not advisable to move it at will, but pat the patient to wake him up. When the situation is serious, artificial respiration and cardiac * * * methods should be used for first aid.
In case of myocardial infarction, nitroglycerin tablets should be taken orally immediately. In case of fracture or dislocation, fix the wound with splint or wooden strip, and then apply cold compress with ice or cold water.
If you fall from a height and hurt your spine, put the patient on a flat stretcher and fix it. Don't let your body shake, and then send it to the hospital. The causes of muscle cramps are poor muscle coordination due to excessive exercise or poor posture when climbing mountains, or a large amount of salt is lost in the body due to cold when climbing mountains or after climbing mountains, thus causing sudden involuntary contraction of muscles.
The first aid method is to pull the muscles of the affected area to straighten the affected area and gently * * *. Replenish water and salt, and rest until the affected area feels comfortable.
Rockfall slopes, cliffs, collapse areas, gravel slopes, valleys or places where landslides have just occurred are all places where rockfall is easy to occur, especially in rainy days. When passing through these sections, you should be vigilant and it is best to drive around. If you encounter falling rocks, you should use the terrain to hide under cliffs and trees, or cover your head with your arms and backpacks. If you hear or see falling rocks in the distance, pay attention to the rolling direction of falling rocks and then dodge in the opposite direction.
In the lost mountaineering activities, in order to take into account the different physical strength of the players, we should arrange the players with moderate physical strength to walk in the front and the players with weak physical strength to walk in the middle, so as to prevent the players from leaving the team because of exhaustion. All actions should be taken by the whole team or group.
During the action, always pay attention to the surrounding scenery, terrain, features and footprints left by people in front. Learning to read maps, compasses and altimeters is one of the important factors to prevent getting lost. After entering the mountainous area, you should know your position no matter what the climate is, and get into the habit of using maps, compasses and positioning at any time every time you climb the mountain. If the weather is bad, such as dense fog, it is best to suspend activities first and keep the correct posture in the dense fog. In addition to calculating the mountains, the main branches, valleys, cliffs, special terrain and features are all helpful to judge the location.
In addition, according to the walking time and speed, the walking distance in a certain period of time can be estimated. Our hotel owner in Lijiang specially reminded us to leave marks along the way in the mountainous areas that we have never been to or in the dense bamboo forests of Miscanthus, so that we can go back the same way when we go wrong.
And some easily mistaken animal trails, hunting trails, forest roads, safe routes, water trails, etc. Should be identified. When you get lost, you will often go into shock because of exhaustion, hunger and thirst, so be careful and give first aid.
4. Little knowledge about peacocks
When it comes to peacocks, people may think of peacock dance of the Dai nationality: graceful dancing and delicate movements, just like peacocks jumping in the forest. Xishuangbanna, Yunnan Province, where the Dai people live in compact communities, is the hometown of green peacocks.
When tourists go to the zoo, they always want to see their pride, otherwise they will feel a little disappointed. Proud as a peacock is a manifestation of male peacock's courtship, which is difficult to satisfy. People who don't know the truth often mistake the peacock's tail screen for its tail feather, but it is not. Everyone is familiar with roosters. The long feather on the cock's tail is its tail feather, and the short feather behind the waist is called tail feather. Almost all birds are like this, except peacock, whose tail feather is particularly long, generally around 1 m, forming a tail screen. The real tail feather is hidden under the tail screen and is often ignored. In late spring and early summer, it is time for male peacocks in the zoo to show their heroic posture. Look at it, hold the tail screen high and spread it out, supported on the cocked tail feather, shaped like a big fan. Bronze-green scattered feather branches are scattered on both sides of each feather shaft, and there is an eye point at the end of each feather shaft, which is composed of deep purple, blue-green, copper, dark brown, light yellow and light grape red. Peacock kept walking around, shaking its tail screen hard and making a "swish, swish" sound. Colorful eye spots reflect dazzling brilliance under the sunlight, which is very beautiful.
Peacock's habitat, mostly open savanna below 2000 meters above sea level, is an open plateau with shrubs, bamboo forests or conifers and broad-leaved trees. Peacocks especially like to move in open areas near streams, rivers and forests, and often stay with 3-5 birds. It is not good at flying. When it is in danger, it quickly escapes with its strong feet and then hides in the dense forest. Early morning and dusk are the time for them to feed in groups; It is very hot at noon, hiding in the jungle to rest; There is a fixed place to spend the night, and it is not easy to change if you are not disturbed. Male peacocks should choose a big tree to rest.
Kong is modest. In dense bushes or grass, scratch the ground with your claws into a concave shape, and pad some weeds and fallen leaves inside. The female peacock lays 1 egg every 1-2 days, with 5-6 eggs in each nest, and the eggs are light milky white, brown or milky yellow. The female peacock undertakes the incubation alone, and the incubation period is about 4 weeks. When the chicken hatched, it was covered with yellow-brown fluff. Under the condition of artificial feeding, 6-40 eggs can be laid every year. After 20-24 months of feeding, female chicks can lay eggs and reproduce, while male chicks need two and a half years to grow beautiful tail screens.
5.50 Less scientific knowledge
Why do sunflowers always face the sun? Sunflower stems contain a wonderful auxin.
This auxin is very afraid of light. When it is illuminated, it will go to the backlight side, and the cells on the backlight side will multiply rapidly. Therefore, the backlit side will grow faster than the bright side, which will bend the sunflower to light.
2. Why do the stars twinkle? We see the stars shining, not because the luminosity of the stars has changed, but because of the occlusion of the atmosphere. The atmosphere is between us and the stars. When starlight passes through the atmosphere, it will be affected by the density and thickness of the atmosphere.
The atmosphere is not absolutely transparent, and its transparency will change according to its density. So when we look at the stars through it on the ground, we will see that the stars seem to be flashing.
3. Why do people yawn? When we feel tired, a lot of carbon dioxide has been produced in our bodies. When there is too much carbon dioxide, oxygen must be supplemented to balance the needs of the body.
Because these residual carbon dioxide will affect our body's functional activities, then the body will send out a protective reaction, so we yawn. Yawning is a deep breathing action, which will let us breathe in more oxygen and expel more carbon dioxide than usual, and it can also eliminate fatigue.
How high is the blue sky? "Blue sky" is actually the earth's atmosphere. The atmosphere surrounds the earth's air and is divided into five layers according to the air density, with a total thickness of 2000-3000 kilometers.
But most of the air is concentrated below 15 km from the ground, and the higher the air, the thinner it is. How thick the atmosphere is, how high the blue sky should be.
5. Why are there no stars in the daytime? Because part of the sunlight is scattered by the gas and dust in the atmosphere during the day, the sky is very bright and the light radiated by the sun is so strong that we can't see the stars. 6. What celestial bodies are there in the solar system? There are nine planets in the solar system.
They are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto. In addition, there are many asteroids, comets and meteors in the solar system, and there are 2958 officially numbered asteroids.
The most famous comet is Halley's comet. 7. Why does it thunder? This is a natural phenomenon that negative electricity meets positive electricity.
When it rains, some clouds in the sky are positively charged and some are negatively charged. When two clouds meet, they will discharge, emit bright and bright lightning, and at the same time release a lot of heat, which will make the surrounding air heated, expand and make a loud noise. This is thunder. 8. Why can an airplane fly into the sky? This plane has two wings, like those of a bird. It has a propeller.
The wing can generate lift and lift the plane into the air; Propeller can produce the ability to push the plane forward. Therefore, the plane can fly into the sky like a bird.
33. For a quartz clock hanging on the wall, when the battery runs out and stops, its second hand often stops at the position of "9" on the dial. This is because the second hand is most hindered by the large torque at the "9" position.
9. Before the water boils, the bubbles in the water rise and vibrate up and down due to convection. Most of the bubbles burst under the pressure in the water, and their cracking and vibration sound together with the container produce a * * * sound, so the sound is very loud. After water boils, it is isothermal up and down, and the bubble volume increases. Under the action of buoyancy, it will explode when it reaches the water surface, so the noise is relatively small.
10. Fire-water incompatible substances must reach the ignition point when burning. Because of the large specific heat of water, water can absorb a lot of heat when it comes into contact with fire, thus reducing the temperature of ignition materials; At the same time, the vaporized water vapor surrounds the burning object, making it impossible for the object to contact with air. Without air, combustion cannot be carried out. 1 1. Sit on the ground and walk for 80,000 days. Because the radius of the earth is 6370 kilometers, every time the earth makes a circle, the distance that objects on its surface "walk" is about 40003.6 kilometers, about 80000 miles.
This is a poem sung by * *, which also scientifically reveals the relationship between motion and stillness-motion is absolute, and stillness is always relative to the reference object. 12. According to the principle of lever balance, if the power arm is a fraction of the resistance arm, then the power is several times the resistance.
If the weight of the arm is very large, it is entirely possible to "dial one or two kilograms." 13. When the distance between molecules is large (more than several hundred angstroms), the attraction between molecules is very small, almost zero, so it is difficult to reassemble a broken mirror.
14. If the directions of the components are the same, the resultant force is equal to the sum of the components. 15. Tofu can't be hung with hemp rope. When the pressure is constant, if the stress area is small, the pressure will be great.
16. True gold is not afraid of fire, and truth is not afraid of argument. Judging from the melting point of gold, although it is not the highest, it is 1068℃, while the temperature of general flame is about 800℃. Because the temperature of the flame is lower than the melting point of gold, gold cannot be melted. 17. With a long whistle, people in the valley should give a long whistle. After many reflections, the sound can form a loud echo, which lasts for a long time. As if the mountains were shouting and the valleys were echoing.
18. Looking at the sky from the well, you can see very little. Because light travels along a straight line, from the knowledge of geometric drawing, the frog's field of vision will be very small. 19. It can be seen from the pressure formula that when the pressure is constant, the smaller the stress area, the greater the pressure.
People will feel very uncomfortable sitting on such a blanket. 20. Good years are bright. Because snow is a bad conductor of heat, when it covers crops, it can well prevent heat conduction and air convection, so it can play a role in heat preservation.
2 1. It is cold before frost and cold after snow. In the late autumn night, the temperature near the ground suddenly turns cold (the temperature is below 0℃), and the water vapor in the air condenses into small ice crystals and adheres to the ground to form frost, so it feels "cold before frost". When snow melts, it needs to absorb heat to reduce the temperature of the air, so we have the feeling of "cold after snow".
22. Eggs touch stones-overreached eggs touch stones. Although the force is the same, the pressure that each object can bear is certain. If this limit is exceeded, the object may be damaged. Eggs can withstand less pressure, so they will break.
23. Before the jade is polished, the surface is uneven and the light is diffuse. After the jade is polished, the surface is smooth and the light is mirrored. 24. Fans have a cool breeze, which is suitable for summer but not for winter.
6. The history, origin, types and other related knowledge of fan dance.
"Fan Dance" is a representative dance of the Korean nationality, which originated from the traditional witchcraft customs of the Korean nationality and later developed into a performance dance form with a history of more than 3,000 years.
Fan dance originated from traditional witchcraft and customs, and later developed into a form of performing dance. /kloc-In the late 5th century, organizations composed of vagrants who made a living by busking often performed various performances in villages, including "acrobatics on ropes" and "ground skills", which were called "singing and dancing", among which fan dances were often performed. Fan dance is performed by women, expressing inner joy through dancing fans. The action is generous, and the style of dancing fan and holding fan is organically integrated, giving people a beautiful and elegant feeling in the soothing rhythm and a cheerful and lively feeling in the brisk rhythm.
Developing this, I found a paper on the internet but I couldn't read it all. Read that magazine when you have time. (The Rhyme of Fan Dance-The Inheritance and Development of Fan Dance)
7. Some common sense in life
Common sense of summer life-ten "best" of summer life. The climate in summer is hot, the germs multiply and grow rapidly, and there are many factors that affect health.
So, in order to spend the summer safely, the following ten "best" in summer life can help you. 1, the best condiment-vinegar: it is cool and hot in summer, sweating more, and being jealous can increase the concentration of gastric acid, help digestion and absorption, and promote appetite.
Vinegar also has strong antibacterial ability, which can kill Staphylococcus pyogenes in a short time. It can prevent intestinal infectious diseases such as typhoid fever and dysentery.
2, the best vegetable-bitter vegetables: high temperature and high humidity in summer often make people listless, tired and weak, chest tightness and dizziness, loss of appetite, body weight loss. At this time, it is of great benefit to eat hard food.
Chinese medicine believes that the reason why people are unhappy in summer is because the summer heat is wet, which not only hurts kidney qi but also sleepy spleen and stomach. Bitter food can balance the body function through its functions of invigorating qi, strengthening kidney, strengthening spleen and drying dampness.
Modern scientific research has also proved that Sophora alopecuroides is rich in alkaloids, amino acids, picroside, vitamins and minerals, and has the functions of relieving summer-heat, relieving fever, relieving restlessness, refreshing and invigorating the stomach. Bitter gourd, bitter vegetable, lettuce, celery, dandelion, lotus seed and lily are all good choices.
3, the best soup-tomato soup: drinking tomato soup in summer can not only get nutrition, but also replenish water, killing two birds with one stone. Tomato soup (cooked and cooled) contains lycopene, which has certain anti-prostate cancer and heart protection effects. Best for men. 4, the best meat-duck meat: don't think that you only eat light food in summer, and you can still make up in summer. The key is to choose the right tonic.
I recommend duck meat to you here. Duck meat is not only rich in nutrients such as protein, which is badly needed by human body in summer, but also can prevent and treat diseases. The secret is that ducks are waterfowl, and their nature is cold. From the treatment principle of "heat is cold" in TCM, it is especially suitable for people with heat and internal heat, such as low fever, physical weakness, eating less, dry stool and edema, which are more common in summer.
Stewed ham and sea cucumber with duck meat, the stewed duck juice is conducive to nourishing the yin of the five internal organs; Duck meat and glutinous rice porridge have the functions of nourishing stomach, enriching blood and promoting fluid production, which is of great benefit to physical weakness after illness; Stewed duck with kelp can soften blood vessels, lower blood pressure and prevent arteriosclerosis, hypertension and heart disease. Stewed ducks and bamboo shoots can cure hemorrhoid bleeding. 5, the best drink-hot tea: summer can not be separated from drinks, the first choice is neither a variety of cold drinks, nor beer or coffee, but very ordinary hot tea.
Tea is rich in potassium (the average content of potassium per 100g of tea is green tea 10.7mg and black tea 24. 1mg), which can quench thirst and relieve fatigue. According to the experiments of British experts, the cooling capacity of hot tea is much higher than that of cold drinks, and it is the best in summer drinks.
6, the best nutrient-vitamin E: vitamins can make you spend the summer safely, and the "best" laurel belongs to vitamin E. German scientists emphasize that people will encounter three major dangers in summer, namely strong sunshine, ozone and fatigue, and vitamin E can minimize these three dangers.
Malt, bran bread, walnut sauce, dairy products and other foods are rich in vitamin E, which can be arranged in summer. If necessary, you can also take pills of vitamin E, 15-60mg per day is enough.
7. The best exercise-swimming: The best exercise in summer is swimming. Swimming not only exercises the hands and feet, waist and abdomen, but also benefits the internal organs, such as the heart, brain, lungs and liver, especially the blood vessels, and is known as "vascular gymnastics".
In addition, because the heat consumed in water is obviously higher than that on land, swimming can also reduce excessive weight and achieve the effect of bodybuilding. 8, the best color-red: Many people think that wearing white clothes in summer is the best, in fact, wearing red clothes is better.
The secret is that red visible light has the longest wavelength, which can absorb a lot of ultraviolet rays in the sun, protect the skin from harm, and prevent the skin from aging or even cancer, while other colors (including white) have a weak effect. As for fabrics, blended T-shirts are the best, and the best blending ratio is 33% cotton and 67% polyester.
9. The best cooling "facility"-fan: From the perspective of fitness, the cooling "facility" is the best fan. Although the fan is an antique, its fitness effect is incomparable to any other modern cooling equipment.
Fan shaking is a kind of exercise, which can exercise limbs (if you consciously switch to left-handed fan shaking, you can also get the effect of activating the right brain, developing the potential of the right brain and preventing stroke). At the same time, fans got the most comfortable wind.
10, the best health care measures-time to get up and go to bed: long sunshine in summer, early in the morning and late at night. Therefore, people's daily life and schedule should be adjusted accordingly. It is better to go to bed late and get up early, and get up and sleep as regularly as possible.
"Timing" is the requirement of the internal biological clock. If it can be timed all the year round, it can create a "dynamic stereotype" and make the body have the best adaptability and predestination. Set yourself a strict time to get up and go to bed in summer, and don't violate it for no reason, even if it is a rest day. The best bedtime in summer is 22:00-23:00, and the best waking time is 5:30-6:30.
The hot weather in summer can easily affect people's sleep, but once they get into the habit of getting up regularly, it is easier to eliminate the interference of climate on sleep. When they wake up naturally and comfortably in the morning, the biological clock in the body will not "go wrong" and various physiological rhythms will run safely.
8. Students' knowledge
Safety knowledge
Small knowledge of fire safety
First, LPG cookers should not be placed in bedrooms, offices, balconies, warehouses, auditoriums and other public places to prevent air leakage and fire.
Second, correctly grasp the use of the switch, wait for the fire, don't wait for the fire, remember to turn off the valve and switch after use, and replace the valve in time if it is broken. Don't let children use cookers or play with switches at will.
Third, when using liquefied gas, someone should look after it and stay away from it. Pay attention to adjust the size of the rotor at any time to prevent the soup from overflowing and extinguishing the flame or being blown out by the wind, resulting in air leakage.
Fourth, liquefied gas tanks should be upright, not upside down, and cannot be cooked or roasted with fire.
5. If there is air leakage, measures should be taken immediately: open doors and windows, ventilate with a fan (but not an electric fan), and then find the leaking part.
Basic knowledge of fire fighting
(1) isolation method: This is a method to eliminate combustible materials.
(2) Asphyxiation method: prevent air from flowing into the combustion zone, reduce the oxygen content in the air, and make the fire source go out under the condition of insufficient oxygen.
(3) cooling method: spray water or other fire extinguishing agents on the combustible materials to lower the temperature of the combustible materials below the ignition point and force the combustion of the materials to stop; Or spray water and fire extinguishing agent to combustible materials near the fire source to reduce the temperature of combustible materials and avoid the expansion of the fire.
(4) inhibition method.