How to use fire extinguisher [#SeeItGrabItUseIt]

2024/04/2407:50:05 science 146592

How to use fire extinguisher [#SeeItGrabItUseIt] - DayDayNews

How to use fire extinguisher [#SeeItGrabItUseIt] - DayDayNews

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As we grow older, we always seem to lose something. Many people who move from remote villages to metropolitan areas always lament that since arriving in the city, they can rarely see the bright Milky Way. Due to various reasons, we all seem to have lost the opportunity to "apprec - DayDayNews

As we grow older, we always seem to lose something. Many people who move from remote villages to metropolitan areas always lament that since arriving in the city, they can rarely see the bright Milky Way. Due to various reasons, we all seem to have lost the opportunity to "apprec

Why is it so hard for us to see the Milky Way now? In a hundred years, humans may not be able to see a single star

05/30 1754

Did you know that the human brain is the most sophisticated and important organ in the world. It is composed of 200 billion brain cells, can store 100 billion pieces of information, generates thoughts that travel more than 300 miles per hour, has more than 100 megabytes of interl - DayDayNews

Did you know that the human brain is the most sophisticated and important organ in the world. It is composed of 200 billion brain cells, can store 100 billion pieces of information, generates thoughts that travel more than 300 miles per hour, has more than 100 megabytes of interl

Intellectual training 365 questions

05/30 1107

In the above-mentioned vision of high-tech warfare, lasers are mentioned many times. This is definitely not a bizarre myth. It not only plays a huge role in production, medicine, scientific experiments and other fields, but also greatly promotes the development of military techno - DayDayNews

In the above-mentioned vision of high-tech warfare, lasers are mentioned many times. This is definitely not a bizarre myth. It not only plays a huge role in production, medicine, scientific experiments and other fields, but also greatly promotes the development of military techno

Which country has military control over space that actually controls the world?

05/31 1228

Text | Science Wormhole Winter in the Arctic is very cold. The average temperature in January is between minus 40°C and 0°C, and some areas can reach minus 50°C in winter. In such a cold Arctic Circle, there are some people who have settled for generations. They are the Inuit. - DayDayNews

Text | Science Wormhole Winter in the Arctic is very cold. The average temperature in January is between minus 40°C and 0°C, and some areas can reach minus 50°C in winter. In such a cold Arctic Circle, there are some people who have settled for generations. They are the Inuit.

Minus 50℃! Is it really not cold when Inuit people live in igloos? If you light a fire in the house, will the snow melt?

05/30 1492

Many people think that their current location is "family room", "toilet", "neighborhood convenience store", "park bench", etc., but this is only understandable information in ordinary people's lives. In fact, humans are on the earth, and the earth rotates on its axis and revolves - DayDayNews

Many people think that their current location is "family room", "toilet", "neighborhood convenience store", "park bench", etc., but this is only understandable information in ordinary people's lives. In fact, humans are on the earth, and the earth rotates on its axis and revolves

Where are you in the vast universe?

05/30 1472

-196°C, which is a temperature that makes people feel very strange, and this number is the liquid nitrogen temperature at which umbilical cord blood hematopoietic stem cells are safely stored. So, why should umbilical cord blood be stored at this temperature? Can the quality and - DayDayNews

-196°C, which is a temperature that makes people feel very strange, and this number is the liquid nitrogen temperature at which umbilical cord blood hematopoietic stem cells are safely stored. So, why should umbilical cord blood be stored at this temperature? Can the quality and

Can the quality and quantity of umbilical cord blood stored in liquid nitrogen at -196°C be maintained?

05/31 1696

"Golden Heart Double Color" Bougainvillea Petunia "Guangzhou No. 1". The flowers are huge, with a diameter of up to 10 centimeters, one-third larger than ordinary petunias. It is especially suitable for the hot and humid weather in Guangzhou, and is suitable for various planting - DayDayNews

"Golden Heart Double Color" Bougainvillea Petunia "Guangzhou No. 1". The flowers are huge, with a diameter of up to 10 centimeters, one-third larger than ordinary petunias. It is especially suitable for the hot and humid weather in Guangzhou, and is suitable for various planting

How many of these new varieties do you know?

05/31 1148

Before this, we all know that our country has the largest rare earth reserves in the world, about 44 million tons, followed by Mongolia with about 31 million tons, and Brazil with 2,200 tons. Thousands of tons of rare earths are called industrial gold. - DayDayNews

Before this, we all know that our country has the largest rare earth reserves in the world, about 44 million tons, followed by Mongolia with about 31 million tons, and Brazil with 2,200 tons. Thousands of tons of rare earths are called industrial gold.

Türkiye claims that it has discovered the world's largest rare earth resources, which can be used for thousands of years. What impact will it have on China?

05/30 1634

Probably because it is backed by stars and sea, astronomy can always stir up the mysterious romance of the universe. In the summer of 2021, a video on CCTV received 280,000 likes and became a hot search. The protagonists of the "cosmic romance" in the video are two college studen - DayDayNews

Probably because it is backed by stars and sea, astronomy can always stir up the mysterious romance of the universe. In the summer of 2021, a video on CCTV received 280,000 likes and became a hot search. The protagonists of the "cosmic romance" in the video are two college studen

In the solar system 200 million kilometers away from the earth, there is an asteroid named after this young man from Suzhou!

05/30 1098

On a clear night, when we look up at the stars, we find that the night is inlaid with countless stars. We can't help but be attracted by the twinkling stars in the sky. The dense starlight is so beautiful. Most of the shining stars we see are stars in the Milky Way, as well as so - DayDayNews

On a clear night, when we look up at the stars, we find that the night is inlaid with countless stars. We can't help but be attracted by the twinkling stars in the sky. The dense starlight is so beautiful. Most of the shining stars we see are stars in the Milky Way, as well as so

In 1994, a comet collided violently with Jupiter, with a force equivalent to the simultaneous explosion of 2 billion atomic bombs.

05/30 1997

The oxygen content of the air is only about 40% of that in the plains, and the annual average temperature is below 0 degrees Celsius. Looking around, you can see the boundless plateau alpine desert grassland. This is the Qiangtang National Nature Reserve, known as the "forbidden - DayDayNews

The oxygen content of the air is only about 40% of that in the plains, and the annual average temperature is below 0 degrees Celsius. Looking around, you can see the boundless plateau alpine desert grassland. This is the Qiangtang National Nature Reserve, known as the "forbidden

Meteorological service records of "life forbidden zone"

06/01 1299

A new Tel Aviv University study proposes a new AIDS treatment that could be turned into a vaccine or a one-time treatment for HIV patients. The study looked at modifying type B white blood cells in patients so that they release anti-HIV antibodies in response to the virus. - DayDayNews

A new Tel Aviv University study proposes a new AIDS treatment that could be turned into a vaccine or a one-time treatment for HIV patients. The study looked at modifying type B white blood cells in patients so that they release anti-HIV antibodies in response to the virus.

Scientists propose potential AIDS treatment: HIV may be defeated with a single injection

06/01 1843

Shape memory polymers have broad application prospects in biomedical and mechanical engineering. However, most shape memory polymer programming processes require heating, such as water baths and oil baths. However, this environmental indirect heating method has limited heating ra - DayDayNews

Shape memory polymers have broad application prospects in biomedical and mechanical engineering. However, most shape memory polymer programming processes require heating, such as water baths and oil baths. However, this environmental indirect heating method has limited heating ra

Jilin University and Huazhong University of Science and Technology joint research-shape memory polymer co-extrusion 4D printing strategy

06/01 1109

Amorphous calcium carbonate (ACC) calcium supplement developed by Israeli biotech company Amorphical was tested in space and results show that it can improve muscle performance in zero gravity. , strengthen and build bones, provide body functions, and enhance immunity. - DayDayNews

Amorphous calcium carbonate (ACC) calcium supplement developed by Israeli biotech company Amorphical was tested in space and results show that it can improve muscle performance in zero gravity. , strengthen and build bones, provide body functions, and enhance immunity.

Technology Frontier | Israel’s innovative ACC technology opens a new era of “space settlement”

06/01 1646

In mid-to-late June, a professional monitoring found that Chinese horseshoe crabs were found all over the coastal tidal flats of the Hepu Dugong National Nature Reserve in Guangxi. The maximum density per unit quadrat was as high as 53.1 birds/100 square meters, ranking first in - DayDayNews

In mid-to-late June, a professional monitoring found that Chinese horseshoe crabs were found all over the coastal tidal flats of the Hepu Dugong National Nature Reserve in Guangxi. The maximum density per unit quadrat was as high as 53.1 birds/100 square meters, ranking first in

With a density of 53.1 horseshoe crabs per 100 square meters, the density of horseshoe crabs in Guangxi ranks first in the country.

06/01 1214

There are no identical creatures on the earth, and there are no identical individuals. Even identical twins will have such differences. However, scientists have concluded that there is only one ancestor of these various creatures living on the earth. Then the creatures on the ear - DayDayNews

There are no identical creatures on the earth, and there are no identical individuals. Even identical twins will have such differences. However, scientists have concluded that there is only one ancestor of these various creatures living on the earth. Then the creatures on the ear

How is the direction of biological evolution determined?

06/01 1334

1. What is professional skill level recognition? 2. How is the implementation of vocational skill level recognition different from the original vocational qualification system? 3. What are the scope and standards of occupations (types of work) for vocational skill level recogniti - DayDayNews

1. What is professional skill level recognition? 2. How is the implementation of vocational skill level recognition different from the original vocational qualification system? 3. What are the scope and standards of occupations (types of work) for vocational skill level recogniti

Do you know all about "vocational skill level certificate"?

06/01 1210

@真知新ordinate Introduction Weather Forecast: Tomorrow is the Xiaoshu solar term, what are the signs of wind? See what the proverbs left by our ancestors say. We know that Xiaoshu has three seasons, one of which is the arrival of warm wind. That is to say, the Xiaoshu solar term ha - DayDayNews

@真知新ordinate Introduction Weather Forecast: Tomorrow is the Xiaoshu solar term, what are the signs of wind? See what the proverbs left by our ancestors say. We know that Xiaoshu has three seasons, one of which is the arrival of warm wind. That is to say, the Xiaoshu solar term ha

Weather forecast: Tomorrow is the Xiaoshu solar term, what are the signs of wind? See what the proverbs left by our ancestors say

06/01 1088

On the afternoon of July 4, 2022, the launch ceremony of the COP15 Youth Biodiversity Scientific Exploration in Hainan event was successfully held at the Siyuan School of Hainan University. - DayDayNews

On the afternoon of July 4, 2022, the launch ceremony of the COP15 Youth Biodiversity Scientific Exploration in Hainan event was successfully held at the Siyuan School of Hainan University.

Embrace the ocean, COP15 Youth Biodiversity Science Exploration Hainan event launched

06/01 1529

There are many animals around us that we hate very much, the most famous of which is naturally the rat. Although the rat is the first of the twelve animals in our country, people are always full of disgust whenever they mention rats, because rats not only destroy crops , and can - DayDayNews

There are many animals around us that we hate very much, the most famous of which is naturally the rat. Although the rat is the first of the twelve animals in our country, people are always full of disgust whenever they mention rats, because rats not only destroy crops , and can

Rat King Qiu Mantun: Killed 350,000 rats at one time, refused foreign acquisitions, said that selling the formula is betraying the country

06/01 1831

On December 30, 1941, the Nationalist Government built a monument-shaped building in Chongqing. This square turret-style wooden building had 5 floors and a height of 7.7 feet, symbolizing the "July 7" Anti-Japanese War. Because it is shaped like a fortress and contains important - DayDayNews

On December 30, 1941, the Nationalist Government built a monument-shaped building in Chongqing. This square turret-style wooden building had 5 floors and a height of 7.7 feet, symbolizing the "July 7" Anti-Japanese War. Because it is shaped like a fortress and contains important

Jiangsu Xinyu Hi-Tech Manufacturer customizes Nanjing garden landscape to tell the historical origin and significance of the spiritual fortress

06/01 1542

In the past few days, apart from studying English and watching American TV series, the author has spent most of the rest of his time listening to music! For the author, my favorite is "Enchanted"! - DayDayNews

In the past few days, apart from studying English and watching American TV series, the author has spent most of the rest of his time listening to music! For the author, my favorite is "Enchanted"!

The man Taylor Swift once loved! The story behind "Enchanted"

06/01 1061