Interesting tips for life quot 1 Life science tips daquan
If the cover of a book has been rolled up for a long time, it is because the humidity in the air is constantly changing; Because the paper of the book absorbs the moisture in the air, it begins to "evaporate moisture" when the air is dry, and it begins to absorb moisture when the humidity in the air is high, so it is easy to "deform" the paper fiber by constantly absorbing and evaporating moisture, so the paper will curl the lever principle.
Using the lever principle, using chopsticks not only saves labor, but also saves distance, making the operation more flexible, but it is more laborious (it doesn't matter if you spend a little effort). The strength and resistance of the lever refer to the force exerted on the lever, the strength refers to the force exerted by fingers on chopsticks, and the resistance refers to the force exerted by vegetables on chopsticks.
To determine the relationship between the force arm and the resistance arm of chopsticks, we need to find the fulcrum. The fulcrum is at the upper end of chopsticks, and the power arm is smaller than the resistance arm. Chopsticks are a laborious lever. They are all laborious levers.
Because the position of food is on the head of chopsticks. You can feel it with chopsticks.
Its fulcrum should be in the tiger's mouth (the index finger is connected with the thumb), and the strength is the force of the finger on the chopsticks, generally up and down the midpoint of the chopsticks (even if it is taken down, it can't reach the end of the chopsticks). Resistance is the force that prevents chopsticks from closing, which generally acts on the head of chopsticks.
Unless you put the dish in the middle alone, it will not be used normally. Therefore, it is a lever with less water in the power arm than in the resistance arm, and it is a laborious lever. Different people hold chopsticks in different postures, which will cause different degrees of exertion, but they are all laborious levers.
2. Interesting life common sense questions, multiple-choice questions
Common honorifics and modesty in life
Please ask for help, please change the article and say correct mistakes.
Congratulatory people say congratulations, and old people say longevity.
Visiting others, talking about visiting, and giving gifts are taken lightly.
Send photos to others and say you will save them. Welcome to buy and say that you will patronize.
Hope to take care of, say to take care of, praise people's opinions, and say high opinions.
Return the goods and invite someone to the appointment.
The other party wrote a letter saying it was a good letter, and his residence said he was humble.
Please forgive me, the guests will come and say they are coming.
When others say they are waiting, they say they are not welcome if they don't meet.
Please don't send someone to say stay, please decide to say jun qie.
Talk to a friend about the company, and leave halfway to say excuse me.
Ask for help, say sorry, and ask for advice.
3. Life tips
Common sense of daily life health-tips on daily life knowledge. We can't help but look at the little common sense in life, and we can benefit from it. Little things in life can often bring us unexpected results. Very useful 425 life tips, I believe everyone can be useful.
1. Use toothpaste skillfully: If there is a small area of skin injury or burns, applying a little toothpaste can stop bleeding and relieve pain immediately and prevent infection, and the curative effect is quite good.
2. Skillfully remove the greasy screen window: You can put the washing powder and cigarette butts left over from smoking together in the water, and use them to clean the glass window and screen window after dissolution, which has a good effect.
3. Put the shrimp in a bowl, add a little salt and edible alkali powder, rub it with your hands for a while, then soak it in clear water, and then wash it with clear water. This will make the fried shrimps transparent as crystal, refreshing and delicious.
4. There is also the unique skill of jiaozi noodles: 6 egg whites are mixed into 1 kg flour to increase the protein in noodles. Protein will solidify and shrink quickly after jiaozi takes the pot, and jiaozi will collect water quickly after taking the pot, which is not easy to stick.
5. After soaking tea in water for a few days, pouring it on the roots of plants can promote the growth of plants; Residual tea leaves can be dried in the sun and smoked in toilets or ditches, which can eliminate the stench and drive away mosquitoes and flies.
4. Interesting little knowledge
Little knowledge, physical interest-the "weight of things" that will change. After learning the relevant physical knowledge, students may know that the weight of the object itself is not static, that is, it is sometimes "weightless"; Sometimes it is "overweight".
What causes the change in the weight of an object? Don't worry, let's look at the following story first: Once upon a time, there was a story: a businessman bought 5000 tons of herring from Dutch fishermen, loaded it on a boat and transported it from a Dutch city to the seaport of Maga, an African city near the equator. When I got there, I weighed it and found that the herring was nearly 19 tons short.
Strange! Where did it go? It can't be stolen because the ship didn't call all the way. At that time, no one could reveal the secret, but now we finally know the reason: it turned out that this was a joke played by gravity.
Because the earth is slightly oval, its radius of north and south poles is 20 kilometers smaller than that of equator. The smaller the radius, the greater the attraction; or vice versa, Dallas to the auditorium
Therefore, when the Dutch 5000 tons of herring are transported near the equator, the weight of herring naturally becomes "light". In addition, the weight of the object changes a lot! If you are on a high mountain, it is lighter than on the flat ground; The equator is lighter than the poles; It is much lighter in water than on land, and so on.
As you can imagine, if you fly to a high altitude area where the gravity of the earth can't reach, there is no weight at all, because the gravity of the earth is very small. However, no matter how it changes, the quality of the object will not change! Well, now everyone knows the truth! In fact, there are many similar problems around us. As long as we can find it in time and combine it with theory, we can find the correct answer.
I believe that if you encounter similar problems in the future, don't be "helpless"! A cat has 230 bones. Cats are more sensitive to hearing than people and dogs.
Compared with its size, cats have bigger eyes than any mammal. The normal pulse of a cat is between 1 10 and 170 beats per minute.
The normal temperature of a cat is about 39 degrees. The vertical jumping height of a cat can reach five times its own height.
A cat's nose print is unique. No two cats have the same nose print. Cats react more strongly to women than men because women's voices are more frequent than men's.
The running speed of domestic cats is about 55 to 60 kilometers per hour. Cats are the most sleepy mammals, sleeping about 16 hours a day.
Birds are interesting and have little knowledge. What bird is not easily noticed? When you pass a tree with a woodcock in the forest, you may not notice that there is a woodcock in the tree. The woodcock is not a very small bird, but a big bird, but its beautiful feathers look like fallen leaves in autumn, so it is not easy to be noticed because it pretends to be motionless. The woodcock stands in the tree, always paying attention to the surrounding situation, even if there is a little movement behind him, it can immediately detect it.
This is because its eyes are located at the back of its head, so no enemy can escape its sight. Of course, few insects can escape it.
Where does grouse live? Grogrouse lives in the cold zone of the northern and southern hemispheres and is one of the few birds in the cold zone. In winter, birds perch on pine or fir trees.
In order to resist the cold climate, it must eat a lot of needles to generate energy. Near the polar regions, the days are short and the nights are long in winter, so grouse eat almost all day.
Spring has come, and grouse have started courtship. They usually choose the male bird by the female bird, and they must win the competition to win the favor of the female bird.
Do parrots chat with each other? "Baby, get up!" Some parrots can talk, but they don't really talk. Parrots' owners patiently teach them to say some simple words. Although they can read them, they don't understand the meaning at all.
Animals can communicate with each other in their own way, not in the language we understand. Their crying may mean: "I'm afraid"; "Please touch me"; "I found food" or "danger! Run! " Colors, movements and smells can also be used as communication tools between animals.
Hunters can set traps by imitating their sounds and smells, and let them trap themselves. Penguins can't build nests? In fact, penguins can't build nests.
When the mother penguin went to the sea to look for food, the father penguin stood on the land, put the egg between his feet, covered the egg with a fat belly, and hatched the egg. Penguins hatch their eggs in the same place every year. They use their beaks and wings to deal with possible enemies and protect their offspring.
Newborn penguins will look for food in their parents' mouths. Penguins feed on fish, shrimp and shells.
In the summer when food is abundant, they spend all their time supplementing nutrition, and can usually dive into the sea hundreds of meters deep to find food. Can Penguin Fly Penguin is a very strange animal, dull but cute.
Their feet are like wearing the same trouser legs, and it is very difficult to walk. Penguins always contract their wings to keep their balance.
Although they can't fly, they still belong to birds. Their heavy clothes are covered with very tight little feathers, which are all covered with oil.
Penguins flap their wings in the water as if equipped with an engine. Penguins are very lively and like diving and playing in the water very much.
When they avoid natural enemies, they often surface and can glide in the air 1 m or more. What kind of nest is the most beautiful? There are many kinds of birds flying in the sky, and each bird has a different nest.
Hummingbirds' nests are smaller than spoons, and some eagles' nests are bigger than cars. Birds use fluff, branches, saliva or cobwebs as nesting materials.
The shape of the bird's nest, some like bowls, some like balls; Some hang like cradles, others float on the water like rafts. There are hundreds of species of weaver birds in Africa, and their nests are very complicated. Some birds also paint their nests to attract the attention of females.
There are many kinds of bird's nest in the world, which one is the most beautiful! How do birds fly long distances? Birds fly in groups for days on a long journey. For example, terns fly from the North Pole to the South Pole in this way, which is about 20 thousand kilometers away.
The long flight of birds is actually very hard. Fly.
5. Life and entertainment tips
Give yourself a smile when you get up every morning, no matter how difficult it is, I hope you are happy every day. You can do it. You can balance your heart with the outside world and avoid disasters and diseases.
When you encounter misfortune, troubles and unpleasant things, don't be depressed, don't bury your troubles in your heart, but entrust them to you. A cool-headed and considerate person can talk to himself or to the animals around him.
2. Travel When a person is psychologically unbalanced and upset, he should go to nature. There are many negative ions in the air around mountains or coasts.
Anions are the basic substances for human beings and animals to survive. The more negative ions in the air, the more oxygen the human organs and tissues will get, and the metabolic function will be vigorous, and the regulation function of neurohumors will be enhanced, which is conducive to promoting health.
The healthier you are, the easier it is to calm down. 3. Read books that interest you, read books that make people relaxed and happy, and have a casual look.
But if you catch a good book and you can't put it down, then all the troubles in the world will be left behind. Listening to music is a beautiful language for human beings.
Listening to good songs and relaxing concerts makes people feel relaxed, immersed in happiness and forget their troubles. Singing aloud is also a kind of bearing, a kind of chic, a kind of relief, and a call for longevity.
Seeking elegance includes playing chess, playing cards, painting and fishing. When you engage in your favorite activities, the unbalanced psychology will naturally gradually balance.
"No matter what kind of current troubles and future threats you face, once the picture begins to unfold, there is no place for them on the brain screen. They retreated into the shadows and darkness, and everyone's attention was focused on their work. "
Elizabeth cured her depression through painting. 6. Do good deeds, do good deeds, get happiness and balance your mind.
Do good deeds, feel comforted and feel practical; Others react, and they are encouraged and happy. Only by starting from yourself and being kind to others can you have friends.
When others need help, extend your hand and show concern for others. Kindness is the best quality. You can't love everyone, but you try to get along with everyone.
7. Forgetting is also a good way to keep psychological balance. Forget the troubles, sadness, bitterness, frustration, yesterday, the harm done to you by yourself and others, the betrayal of friends, and fragile feelings.
Forget the shame and shame … so that you can be optimistic and open-minded. The road of life is tortuous. Laugh at social attachments such as honor, shame, wealth, poverty, slander, jealousy and pain, and you will get relief and psychological balance.
Forget harmful people and things and keep a psychological balance. Life is short, everything should be open-minded, keep a psychological balance at any time and place, be calm, laugh often, and run with bulls will lead a happy life.
6. Questions and answers about common sense of life
Topics about common sense of life can be written, such as what happens when chewing gum is accidentally swallowed, can fish live without water, and so on. , the specific contents are as follows:
1. If we stay at home all day, will the flu disappear in the crowd?
A: Yes. In this way, a global immune system is formed in theory, but when a person comes out, the germs spread immediately.
2. If chewing gum is swallowed carelessly, will it really not be digested and remain for several years?
A: No, chewing gum is really difficult to digest, but it still has no ability to escape from the normal human digestive system. It will be digested in about three days at most.
3. What is the abbreviation of the word 3.OK?
A: The most common view is that-OK comes from the misspelled phrase "oll korrect", which means "all right". It originated from 19 Boston newspaper in the 1940s, when it was very popular to use deliberately misspelled words to create humorous effects.
4. Can fish live without water?
A: Yes. There are many kinds of amphibians in the world. Similarly, there are about 50 kinds of flying fish.
5. Will some plants die of old age?
A: If you keep a good living environment and conditions, some plants can live forever. But once the external environment changes, their lives will be over.
6. Is the maritime climate beneficial to human body?
A: Not exactly. The exciting smell of sea breeze comes from a chemical product of coastal bacteria, although it only accounts for a small proportion in the air. However, recent research shows that the salt in seawater will react with these chemicals and release harmful gases, thus polluting the air in the harbor.
7. Is monologue a manifestation of madness?
A: No, it's normal to talk to yourself whether you are under pressure or alone.
8. Where does the fear come from?
A: About 10% people often suffer from inner fear. Some may cause physical problems, and some may even cause trauma. Studies have shown that simple phobia may be related to genetic inheritance, and some are due to cultural and historical factors. For example, the fear of spiders came from the Middle Ages, because spiders were thought to be related to plagues.
7. Common sense of daily life
head
1. When you have a headache or dizziness, you can apply toothpaste to your temples, because toothpaste contains menthol and clove oil, which can relieve the pain.
2. When you have a headache, grind the apple into mud and apply it on gauze and stick it on the headache. Symptoms can be alleviated.
Oral site
1. yellow teeth, you can chew peanuts in your mouth and brush your teeth for three minutes, which is very effective;
2. Eat something smelly like garlic and stinky tofu, and just eat a few peanuts;
3. If there is a small area of skin damage or burns, immediately apply a little toothpaste to stop bleeding and relieve pain;
4. If there is an ulcer in the mouth, stick it on the ulcer with vitamin C, and it will basically be fine after the ulcer is dissolved;
5. If you eat spicy food, you will feel spicy to death. Just put a little salt in your mouth, hold it and rinse your mouth, and it won't be spicy.
ocular region
1. Do not use your eyes continuously for more than 40 minutes. Experts believe that correct eye habits are the most important thing to protect your eyes. If you use your eyes for more than 40 minutes at a time, rest for 10 minutes, look far away, or close your eyes for a while, and your eyes will not be tired and dry easily.
2. Eat more yellow-green vegetables. Such as carrots, corn, tomatoes, broccoli, kiwifruit and so on. , rich in lutein and zeaxanthin, can prevent the functional degradation of eyes.
3. Play table tennis and roll your eyes more. Experts say that when playing table tennis, the eyes will rotate with fast-moving objects, which plays a role in adjusting and relaxing, delaying presbyopia and preventing myopia.
4, often drink medlar chrysanthemum tea. Watching the computer often makes Zhang Jian's eyes feel tired, so he often gives himself a cup of medlar chrysanthemum tea, which has the effects of improving eyesight, refreshing brain and nourishing liver, and can improve the symptoms of dry eye.
5. Wear sunglasses when going out. Eyes are vulnerable to ultraviolet rays, not only the skin around the eyes will age, but also have a certain impact on vision. So just go out, especially in summer or go to places with strong ultraviolet rays such as the seaside and mountains.
nose
1. After washing your face, gently rub some fine salt on both sides of your nose with your fingers, and then rinse with clear water, so that blackheads and acne will be removed and pores will become smaller.
2. Lying on your side can treat nasal congestion. Lie down with the left nasal obstruction facing the right and the right nasal obstruction facing the left, and hold your nose with your forefinger and middle finger. * * * Xiang Ying points on both sides of the bridge of the nose 1-2 minutes later, the nasal congestion can be eliminated.
3. The nose is blocked and the nasal cavity is not ventilated. Sticking raw onion slices will take immediate effect.
laryngeal
1. If the throat and gums are inflamed, cut the watermelon into small pieces at night and eat with salt. Remember that it must be at night, when the symptoms will be relieved and the next day will be fine.
2. Drink some vinegar when you burp, which will have an immediate effect.
3. Treat cough, especially dry cough. Before going to bed at night, fry eggs with pure sesame oil, add a little more oil, and don't put any seasoning. Sleep in hot weather and eat for several days, and the effect is obvious.