(1) Prevention and control of environmental pollution caused by production and living activities, including prevention and control of "three wastes" (waste water, waste gas and waste residue), dust, radioactive substances, noise, vibration, odor and electromagnetic microwave radiation, harmful gases, liquids and noise generated by transportation activities, pollutants discharged by ships at sea, toxic and harmful chemicals used in industrial and agricultural production and people's life, and smoke and dust discharged from urban life. (2) Preventing environmental damage caused by construction and development activities, including preventing environmental pollution and damage caused by large-scale water conservancy projects, railways, highway trunk lines, large-scale ports and docks, airports and large-scale industrial projects, and preventing environmental damage, pollution and impact caused by land reclamation around lakes, development of offshore oil fields, coastal zones and swamps, development of forests and mineral resources, and establishment and construction of new industrial zones and new towns; .
2. Little is known about marine environmental protection.
(1) Prevention and control of environmental pollution caused by production and living activities, including prevention and control of "three wastes" (waste water, waste gas and waste residue), dust, radioactive substances, noise, vibration, odor and electromagnetic microwave radiation, harmful gases, liquids and noise generated by transportation activities, pollutants discharged by ships at sea, toxic and harmful chemicals used in industrial and agricultural production and people's life, and smoke and dust discharged from urban life.
(2) Preventing environmental damage caused by construction and development activities, including preventing environmental pollution and damage caused by large-scale water conservancy projects, railways, highway trunk lines, large-scale ports and docks, airports and large-scale industrial projects, and preventing environmental damage, pollution and impact caused by land reclamation around lakes, development of offshore oil fields, coastal zones and swamps, development of forests and mineral resources, and establishment and construction of new industrial zones and new towns;
This article is about protecting the ocean.
Protect the ocean, starting with me.
Throughout the ages, Mother Earth has raised countless generations of children and grandchildren with sweet milk. It turned out that she was beautifully decorated by junior students. However, now human beings have tortured her to death for their own interests. There is only one earth for mankind; The ocean is facing a serious environmental crisis. "Save the earth, save the ocean" has become the strongest voice of people all over the world.
I feel heartache for the deterioration of the surrounding marine environment. I think: if teenagers, as future successors, don't understand the composition of human oceans and the seriousness of marine environmental problems, ignore the laws and regulations on marine environmental protection, don't enhance their awareness of marine environmental protection, and don't consciously fulfill their obligations to protect the marine environment, our lives will be destroyed in their own hands, and God will severely punish us. To this end, I am determined to start from myself, protect the marine environment, protect our home, and be the guardian of the marine environment.
In the past year, I actively participated in the school's fry stocking activities, led the class cadres of our senior class to set up a "blue angel" fish-releasing and fish-protecting group, and encouraged the team members to adopt a small fry on campus and feed it in their spare time, which laid the foundation for it to grow into a big fish. In the signature activity of "Let the Earth Be Full of Life" organized by the school, I solemnly signed my name on it, writing down my determination and expectation for environmental protection and my vision for a better future. I actively participated in the prize-winning essay-writing activities held by the school on World Marine Environment Day, carefully consulted and collected various materials, conducted social surveys, and wrote articles on marine environmental governance ideas. I often take part in environmental protection lectures organized by the school, watch marine environmental protection videos, actively participate in environmental protection knowledge quiz activities, and fill in each question carefully. I participated in the website construction of the "Red Scarf Fish Protection Team", posted a lot of environmental protection pictures and knowledge, as well as legal knowledge about environmental protection, the development trend of environmental protection in China, and marine environmental protection around the world; Every month, I will use the internet and newspapers to find some latest "environmental information" with different themes and sections to tell you; We also make some publicity boards regularly to publicize environmental protection knowledge and common sense of life. Raise everyone's awareness of environmental protection; Call on students to take care of their homes from different aspects, start from the little things around them and make contributions to the surrounding marine environment! I actively mobilize people around me to protect and build the same and only home of mankind according to law, promote the sustainable development of economy and society, and make contributions to human civilization. Together with my classmates, I also initiated the initiatives of "keeping a fish, adopting a fish, cherishing every ocean and making our surroundings full of green" and "sparingly using plastic bags instead of foam lunch boxes and disposable chopsticks to keep us away from white pollution". Let's put down the convenient bag and pick up the vegetable basket. Let's move towards a beautiful ocean tomorrow and a brilliant future!
According to a report I collected, "marine environmental problems are caused by unreasonable development and utilization of marine resources by human beings." Shocking marine environmental problems mainly include water pollution, oil spill pollution and improper development and utilization of natural resources. "Iron facts tell us that they are ruthlessly devouring human life like demons. It threatens the ecological balance, harms human health, restricts the sustainable development of economy and society, and puts human beings in a dilemma. To this end, I issued a declaration: "As long as we humans always have the awareness of protecting and managing the marine environment according to law, the global village will become a beautiful paradise." The sky in the future must be blue, the water must be clear, the trees are shady and the flowers are everywhere, and human beings can enjoy the happiness endowed by nature.
"The real test of our contribution to the marine environment is not words, but actions." Although what I am doing now is only a small matter, I firmly believe that if we all have the responsibility to protect the marine environment, starting from ourselves and starting from small things, and working together to protect our homeland, it will naturally give humanity its due return. Take a nap in the warm cradle-grassland; Grow up under the kind smiling face-the sky, and bathe in the river, the source of love.
Striving for Excellence and pursuing Excellence, we stand at the forefront.
thank you
4. What are the little marine knowledge?
The difference between ocean and ocean
The vast ocean, from blue to green, is beautiful and spectacular. Ocean, ocean. People always say this, but many people don't know that the sea and the ocean are not the same thing, they are different from each other. So, what's the difference between them and what does it matter?
The ocean is the central part of the ocean and the main body of the ocean. The total ocean area in the world accounts for about 89% of the ocean area. The water depth of the ocean is generally above 3000 meters, and the deepest point can reach 10000 meters. The ocean is far from the land and is not affected by the land. Its hydrology and salinity have not changed much. Every ocean has its own unique ocean current and tidal system. The water in the ocean is blue and transparent, and there are few impurities in the water. There are four worlds, namely, the Pacific Ocean, the Indian Ocean, the Atlantic Ocean and the Arctic Ocean.
The ocean at the edge of the ocean is an accessory part of the ocean. The area of the sea accounts for about 1 1% of the ocean. The water depth of the sea is relatively shallow, with an average depth of several meters to two or three kilometers. The sea is close to the mainland and is influenced by the mainland, rivers, climate and seasons. The temperature, salinity, color and transparency of seawater are all affected by land and have obvious changes. In summer, the sea gets warmer and the water temperature drops in winter. In some sea areas, seawater will freeze. Where the river flows into the sea, or in the rainy season, the sea water will weaken. Due to the influence of land, rivers carry sediment into the sea, and the offshore seawater is turbid and the transparency of seawater is poor. The sea has no independent tides and currents. The ocean can be divided into marginal sea, inland sea and Mediterranean sea. The marginal sea is not only the edge of the ocean, but also close to the continental front; This kind of sea is widely connected with the ocean and is generally separated from the ocean by a group of islands. China's East China Sea and South China Sea are marginal seas of the Pacific Ocean. The inland sea is a sea located on the mainland, such as the Baltic Sea in Europe. The Mediterranean Sea is a sea between several continents, and its water depth is generally deeper than that of the inland sea. There are nearly 50 major oceans in the world. The Pacific Ocean is the largest, followed by the Atlantic Ocean, and the Indian Ocean is similar to the Arctic Ocean.
The formation of the ocean
How did the ocean form? Where does the sea water come from?
At present, science cannot give the final answer to this question, because they are related to another common and equally unsolved problem of the origin of the solar system.
Current research proves that some large and small nebulae separated from the solar nebula about 5 billion years ago. They revolve around the sun while rotating. In the process of movement, they collided with each other, and some lumps combined with each other, from small to large, and gradually became the original earth. During the collision of nebula clusters, they shrink sharply under the action of gravity, and the radioactive elements in them degenerate, which makes the primitive earth heat up continuously. When the internal temperature reaches high enough, underground substances, including iron and nickel, begin to melt. Under the action of gravity, the weight sinks and tends to concentrate in the center of the earth, forming the core; Lighter ones float to form the crust and mantle. At high temperature, the water inside evaporates, rushes out with the gas and rises into the air. But because of gravity, they will not run away, but will only turn around the earth and become a circle of air and water.
In the process of cooling and condensation, the crust on the earth's surface is constantly impacted and squeezed by the violent movement inside the earth, so it becomes uneven and sometimes crushed, forming earthquakes and volcanic eruptions, spewing magma and hot gas. At first, this kind of situation often happens, and then it gradually decreases and tends to be stable. This division of light and heavy substances led to great turmoil and reorganization, which was completed about 4.5 billion years ago.
After the crust is cooled and shaped, the earth is like an apple that has been dried for a long time, and its surface is wrinkled and uneven. There are mountains, plains, river beds and basins.
For a long time, the water vapor in the sky coexisted with the atmosphere. Thick clouds are gathering. It's dark. With the gradual cooling of the earth's crust, the temperature of the atmosphere is also slowly decreasing. Water vapor takes dust and volcanic ash as condensation nuclei and becomes water droplets, which accumulate more and more. Due to uneven cooling and strong air convection, thunderstorms and turbidity currents were formed, and it rained harder and harder for a long time. Surging floods, through thousands of rivers and valleys, converge into a huge water body, which is the primitive ocean.
In the primitive ocean, seawater is not salty, but acidic and anoxic. Water is constantly evaporating, and clouds repeatedly cause rainfall, and then fall back to the ground, dissolving the salt in the rocks on the land and under the sea, and continuously collecting it into the seawater. After hundreds of millions of years of accumulation and integration, it has become a generally uniform salt water. At the same time, because there was no oxygen and ozone layer in the atmosphere at that time, ultraviolet rays could reach the ground directly. With the protection of seawater, life was first born in the ocean. About 3.8 billion years ago, organic matter was produced in the ocean, and lower single-celled organisms first appeared. In the Paleozoic era 600 million years ago, there were algae that photosynthesized in the sun to produce oxygen, which gradually accumulated and formed the ozone layer. At this time, creatures began to land.
In a word, after the gradual increase of water quantity and salinity and the vicissitudes of geological history, the primitive ocean gradually evolved into today's ocean.
5. How to protect the marine environment
The main products provided by the ocean to human beings are: marine food (fish, shrimp, kelp, etc. ), sea salt and mineral resources (such as uranium, silver, gold, copper and so on. ).
The ocean has other functions: regulating climate (absorbing carbon dioxide), evaporating water for rainfall and providing energy (tidal energy can be used for power generation).
The main causes of marine pollution are: oil tanker leakage, dumping of industrial waste and domestic garbage, and direct discharge of domestic sewage into the sea.
Marine pollution brings a lot of harm to human beings and the ocean. It makes toxins accumulate in marine food, and people will get sick if they eat it. Reduce seafood and endanger human food sources; Kill plankton, reduce the ocean's ability to absorb carbon dioxide and accelerate the greenhouse effect; Make marine life dead or deformed, and change the ecological balance of the whole ocean.
Mankind is making unremitting efforts to protect the ocean, including prohibiting the dumping of industrial waste and domestic garbage into the ocean and the discharge of domestic sewage into the sea after treatment.
6. Know little about environmental protection
In the final analysis, human protection of the environment is based on the protection of the increasingly depleted resources on the earth, and the protection of water resources is the most basic condition for human survival and development.
Below, the author talks about some superficial understanding on how to protect water resources in modern production and life. First of all, we should establish the consciousness of cherishing water and carry out water resources warning education.
For a long time, most people generally think that water is an inexhaustible "cornucopia", which is wasted in use. I wonder if I consciously cherish it. In fact, the water resources on the earth are not inexhaustible. Especially in China, the per capita water resources are not rich, the regional distribution is uneven, and the year is unpredictable, with great inter-annual differences. Coupled with serious pollution, water resources are even more scarce, which is vividly reflected in the repeated water cuts of the Yellow River.
National water resources utilization projects such as "Yellow River Diversion Project" and "South-to-North Water Transfer Project" are aimed at solving the water shortage problem in some areas, but we should think deeply: Where can we "divert water from the Yellow River" when the water in the Yellow River is exhausted? The water in the south is polluted. How to "transfer water to the north"? Therefore, people must establish the consciousness of water crisis, take saving water resources as our conscious code of conduct, and carry out water resources warning education in various forms. Secondly, we must develop water resources rationally to avoid the destruction of water resources.
Water resources development includes surface water resources development and groundwater resources development. Water resources are used by the state. Therefore, the development of production and domestic water must comply with the relevant provisions of the Water Law of People's Republic of China (PRC) and make overall plans.
When exploiting groundwater, because the water quality of each aquifer is quite different, it should be exploited by layers; Contaminated diving and confined water shall not be mixed; For exploration projects that expose and penetrate the water layer, layered water sealing and hole sealing must be carried out in strict accordance with relevant regulations to effectively prevent water pollution and ensure the sustainable development of water bodies. Modern water conservancy projects, such as flood control, power generation, shipping, irrigation, aquaculture water supply, etc. , while exerting one or more economic benefits, it will have a certain negative impact on the natural environment and social environment of the project location, upstream and downstream, estuary and even the whole basin, and may also cause water resources destruction in a certain range. Therefore, since 1970s, many countries have carried out environmental assessment on water conservancy projects.
In China, environmental assessment is needed in the feasibility study stage of water conservancy projects. Large and medium-sized projects should prepare environmental impact reports, and small and medium-sized projects with little impact on the environment should prepare environmental impact assessment tables. In addition, the destruction of water resources by some mining industries can not be ignored. For example, coal mining discharges 0.88 cubic meters of water for every ton of coal mined. According to the annual coal mining of 300 million tons in our province, the loss of groundwater resources is as high as 250 million cubic meters, which has caused great damage to the geological structure of groundwater.
For another example, unrestricted deforestation will cause serious damage to vegetation, and it will also have a certain impact on soil and water conservation and surface burial of water resources. Third, improve the utilization rate of water resources and reduce water waste.
The key to effective water saving is to reuse water resources by using "reclaimed water". If reclaimed water can be used in the whole society, it will not only bring considerable economic and environmental benefits, but also form a good atmosphere for cherishing water resources in society.
At present, many large and medium-sized enterprises have developed and utilized reclaimed water. For example, all mines in Huozhou Coal and Electricity Group use reclaimed water to sprinkle water underground and flush toilets on the ground, which has achieved good economic and social benefits. In addition, the effective utilization of water resources is regulated by economic leverage.
Because water control is not in place, many places have flowing water, and some places will "hold bowls and pray". Therefore, it is necessary to install an effective water metering device and implement the principle of using more water and charging more, so as to achieve the purpose of saving water. Urban water quota management is an internationally accepted method. On the premise of scientific verification of water consumption, adhere to the principle of classified treatment. Different water prices shall be imposed on citizens' domestic water, industrial and commercial enterprises' water and government institutions' water, and the excess shall be appropriately raised to cultivate citizens' habit of saving water.
While saving water resources, we should avoid ineffective waste. In winter in the north, water pipes are prone to frost crack and serious water leakage, so special attention should be paid to prevention and inspection; With the development of social economy and the acceleration of urbanization, in order to alleviate the shortage of water resources, in addition to vigorously saving and protecting water resources, inter-basin water transfer has become an inevitable choice for cities in northern China, which will inevitably bring about changes in the relationship between supply and demand of water resources, so water rights trading must be implemented; Since China implemented the "welfare water" system, water has not been treated as an economic commodity. Therefore, in the preparation of water resources, the market mechanism is usually replaced by the control method. At present, we should change our ideas, recognize the natural and commodity attributes of water resources, follow the laws of nature and value, truly treat water as a commodity, rationally allocate water resources by using market mechanisms, and reduce resource waste.
Fourth, carry out water pollution prevention and control to realize comprehensive utilization of water resources. Water pollution includes surface water pollution and groundwater pollution. Industrial wastewater, industrial garbage, industrial waste gas, domestic sewage and domestic garbage produced in the production process can all cause water pollution through different infiltration methods. For a long time, environmental incidents caused by direct discharge of industrial production sewage are common, which have brought extremely bad effects on human production and life. Therefore, effective prevention and control of production and domestic sewage should be carried out.
Cities can adopt centralized sewage treatment; Industrial enterprises must implement the "three simultaneities" system of environmental protection; According to the different properties of production sewage, corresponding sewage treatment measures are taken. In short, we must resolutely implement the supervision and management system for water pollution prevention and control, adhere to the principle that whoever pollutes will control it, strictly implement the one-vote veto system for environmental protection, promote the sewage treatment work of enterprises, and finally realize the comprehensive utilization of water resources.
Water is the material basis for the existence of life on earth, and water resources are the primary condition for maintaining the sustainable development of the earth's ecological environment. Therefore, protecting water resources is the greatest and most sacred duty of mankind. One way: explore new water sources. It seems to be a contradiction that a planet that is mostly covered with water is facing a water crisis.
However, on earth, this is indeed a fact. 97% of the water on the earth is seawater.
7. Tips on environmental protection (brief)
1. Use environmentally friendly cloth bags; 2. Try to take the bus; 3. Don't pursue the fashion of dress excessively; 4. Do not enter the core area of nature protection; 5. Promote walking and cycling; 6. Do not use non-degradable plastic lunch boxes; 7. No fireworks; 8. Double-sided paper; 9. Save food; 10. Refuse to use disposable articles; 1 1. Eat meat moderately; 12. Turn off the faucet conveniently; 13. One water for multiple purposes; 14. Try to buy local products; 15. Turn off the lights to save electricity; 16. Reject excessive packaging; 17. Use economical water tools; 18. Refuse to use precious wood products; 19. Refuse to use disposable chopsticks; 2O。 Make full use of solar energy; 2 1. Try to use renewable materials; 22. Use energy-saving lamps; 23. Simplify house decoration; 24. repair the old and use the waste; 25 do not borrow soil at will; 26. Use more soap and less detergent; 27. Do not occupy cultivated land indiscriminately; 28. Don't burn straw; 29. Do not interfere with the free life of wild animals; 3O。 Do not intimidate or feed animals in public feeding areas; 3 1. Don't eat frogs, protect frogs and protect farmers; 32. Promote bird watching and oppose bird closing; 33. Don't pick up the eggs of wild birds; 34. Refuse to eat wild animals; 35. Use less hair gel; 36. Reduce cards to save trees; 37.*** Clothing made of animal fur; 38. Don't fish in rivers and lakes; 39. Use less canned food and drinks; 4O。 No Christmas tree; 4 1. No burning in the wild; 42. Do not buy wild animal products; 43. Don't throw cigarette butts; 44. Don't pick and eat wild vegetables; 45. Understand the animals and plants under special state protection; 46. Do not encourage the production and purchase of animal and plant specimens; Don't keep wild animals as pets; 48. Observe the small animals and birds around you and provide them with convenient living conditions; 49. Do not participate in animal cruelty activities; 50. Do not encourage the purchase and release of animals; 5 1. Don't watch the monkey show on the street; 52. When animals are in trouble, help them enthusiastically. Don't help animals when they are free. 53. Don't mistreat animals; 54. See the ropes, clips and cages that trap animals removed decisively; 55. Plant flowers and grass indoors and in the hospital; 56. Planting trees in front of and behind the house; 57. Save paper and recycle waste paper; 58. Garbage sorting and recycling; 59. Donate old things to the poor; 60. Recycle waste batteries; 6 1. Recycling of scrap metal; 62. Recycling waste plastics; 63. Recycling waste glass; 64. Try to avoid producing toxic waste; 65. Use a fluorine-free refrigerator; 66. Use less diapers; 67. Use less pesticides; 68. Use less chemical fertilizer and try to use farmyard manure; 69. Use less indoor pesticides; 70. Don't burn articles that may produce toxic gases; 7 1. If you don't smoke, advise others to smoke less; 72. Eat less chewing gum; 73. Do not pursue the rapid upgrade of computers; 74. Intensive use of commodities; 75. Give priority to buying green products; 76. Private cars regularly check exhaust gas; 77. Use unleaded gasoline; 78. Don't dump garbage into rivers, lakes and seas; 79. Choose big bottles and bags of food; 80. Understand the distribution and pollution of water bodies in hometown; 8 1. Support environmental fund-raising; 82. Oppose luxury and simple life; 83. Support the Environmental Protection Unit; 84. Organize voluntary labor to clean streets and beaches; 85. Avoid tourism pollution; 86. Participate in environmental protection publicity; 87. Be an environmental volunteer; 88. Understand the grassland crisis; 89. Understanding desertification; 90. Understanding and protecting forests; 9 1. Understanding and protecting the ocean; 92. Take care of ancient and famous trees; 93. Protection of cultural relics and historic sites; 94. Timely report acts that damage the environment and ecology; 95. Pay attention to the news media reports on environmental protection; 96. Control population and persuade super-life; 97. Use every Green Day to raise awareness of environmental protection; 98. Read and circulate environmental protection books, newspapers and periodicals; 99. Understand the signs and meanings of green food; 100. Planting flowers and grass indoors and in the hospital; 1 10. Keep the drawing paper and homework flat, and don't fold it; 1 1 1. Draw and write carefully, and do not waste drawing paper and homework; 1 12. handle with care, and don't throw away school supplies such as oil pastels and pencils; 1 13. Keep the surrounding environment clean and tidy, and do not throw away garbage and sundries at will; 1 14. Put the garbage back; 1 15. Put the milk cartons flat and put them into the recycling bin to reduce the space occupied by garbage; 1 16. Willing to participate in the activities of collecting waste materials and using waste materials for small-scale production; 1 17. Don't scribble on the wall at will.
1 18. I like to participate in tree planting activities; 1 19. Don't pick flowers at will; 120. Willing to protect the environment; 12 1. The paper to be copied and printed should be double-sided, and the blank side can be used to copy or cut into note paper or draft paper. Abandoned briefcases can be reused many times; 122. Use more paper clips and staples and less solvent products containing benzene, such as glue and correction fluid.
This is not only a kind of pollution to the environment, but also a kind of pollution to our human body itself; 123. Paper cups are for tourists. Participants should bring their own cups when attending the meeting to avoid the waste and pollution of paper cups. .
8.20 common tips for environmental protection
20 common tips for environmental protection:
1. Replace printed books and periodicals with electronic books and periodicals, and replace paper letters with e-mail.
2. Use network * * * to replace the company's internal notices and documents.
3. The paper to be copied and printed should be double-sided, and the used copy paper on one side can be copied or cut into note paper or draft paper with a blank side.
4. Abandoned briefcases can be reused many times.
5. Use more paper clips and staples, and less solvent products containing benzene, such as glue and correction fluid. This is not only a pollution to the environment, but also a pollution to our human body itself.
6. Paper cups are for tourists. Participants should bring their own cups during the meeting to avoid the waste and pollution of paper cups.
7. Set a reasonable "power plan" for the computer, which can make the computer automatically turn off the monitor after a short rest and automatically start the "standby" mode when it is not used for a long time; If you don't use it for a long time, you can try to turn on the "hibernation" mode of your computer.
8. Shut down normally after use, at the same time, turn off the monitor, unplug the power plug or turn off the switch on the power terminal board; Unused peripheral equipment, such as printers and speakers, should be turned off in time; Temporarily unused devices, such as optical drives, floppy drives, network cards and sound cards, can be shielded first.
9. Replace CRT screen with LCD computer screen. Reduce the brightness of the display; When editing text, darken the background, which can save energy, protect eyesight and reduce eye fatigue. When the computer plays a single audio file such as music, stories and novels, the monitor can be turned off completely.
10, close unused service programs. MSNMessenger, desktop search, Quicktime, wireless device manager, etc. , and turn it off when it is not needed.
1 1. Always maintain the computer and pay attention to moisture and dust prevention. Too much dust on the machine will affect the heat dissipation, and the dust on the display will affect the brightness. Keeping the environment clean, cleaning the dust in the machine regularly and wiping the screen can save electricity and prolong the service life of the computer.
12, when not using the computer, use standby instead of screen saver.
13, try to use CPU cooling software.
14. Dry batteries are used in stages. Such as flashlights, transistor radios and transistor alarm clocks.
15. When the flashlight is not in use, the last battery can be turned upside down and put into the flashlight to slow down the natural discharge of the battery and prolong the use time. At the same time, it can also avoid the inner cavity of the flashlight from softening and rusting because the battery forgets to discharge completely.
16. Buy two batteries and use them alternately and intermittently, but don't mix them.
17, centralized recycling of used batteries.
18, in the sealed state, make fewer calls. When communicating with mobile phones in a basement or a well-sealed indoor environment, it takes more power to ensure that signals can normally penetrate the ceiling, walls or other obstacles. So much electricity is at the expense of consuming more electricity, which will also consume more battery power of mobile phones.
/kloc-destinations within 0/9 and 3km don't need to drive, buses or bicycles are good choices, and walking can also be considered, which will not be too hard and save money, and also allow car owners to increase their exercise.
20. Take the stairs when there are few floors, which will not delay working hours too much, and can also be used as workshop practice.