Water pollution | Water Contamination | Video for kids

2024/04/2512:28:10 news 1519104

Water pollution | Water Contamination | Video for kids - DayDayNews

Water pollution | Water Contamination | Video for kids - DayDayNews

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Author/Writer of "Financial World" Weekly Editor Ni Yuping/Chen Fang's business is also not doing well. At 9 o'clock in the morning, Lao Qian's mobile phone repair shop in Shilibao, Beijing opened on time. As soon as the door was pushed open, the welcome buzzer at the door rang t - DayDayNews

Author/Writer of "Financial World" Weekly Editor Ni Yuping/Chen Fang's business is also not doing well. At 9 o'clock in the morning, Lao Qian's mobile phone repair shop in Shilibao, Beijing opened on time. As soon as the door was pushed open, the welcome buzzer at the door rang t

The mobile phone repair business is not doing well either: it is losing money every day. The ten-year-old shop closed down and someone lost 100,000 yuan.

05/21 1534

In water dispensers, the application requirement for a liquid level sensor is that it does not pollute the water quality, the sensor is not easy to harbor dirt and evil, and it is easy to clean. The principle of the float sensor is to use changes in water level to drive the float - DayDayNews

In water dispensers, the application requirement for a liquid level sensor is that it does not pollute the water quality, the sensor is not easy to harbor dirt and evil, and it is easy to clean. The principle of the float sensor is to use changes in water level to drive the float

Can photoelectric liquid level sensors replace float sensors in water dispenser applications?

05/22 1507

Most water meters used in daily life are installed at home. Remote water meters are divided into wired remote water meters, wireless remote water meters, photoelectric direct-reading remote water meters, etc. These remote water meters have functions such as remote data transmissi - DayDayNews

Most water meters used in daily life are installed at home. Remote water meters are divided into wired remote water meters, wireless remote water meters, photoelectric direct-reading remote water meters, etc. These remote water meters have functions such as remote data transmissi

Why are wired remote water meters cheaper than wireless remote water meters? The truth turned out to be...

05/22 1281

At the beginning of the year, I made a reading plan to read 50 books a year. At present, the time is just over half and the goal is more than half achieved. Because I have to work during the day, after putting my children to bed every day, my reading time is from 23:00 to 0:30. - DayDayNews

At the beginning of the year, I made a reading plan to read 50 books a year. At present, the time is just over half and the goal is more than half achieved. Because I have to work during the day, after putting my children to bed every day, my reading time is from 23:00 to 0:30.

Personal reading report for the first half of 2022

05/21 1019

There is an abandoned village in Hong Kong called Wesley Village. It was built in 1954 and named after John Wesley, an 18th-century Anglican Christian theologian. - DayDayNews

There is an abandoned village in Hong Kong called Wesley Village. It was built in 1954 and named after John Wesley, an 18th-century Anglican Christian theologian.

The thief of time stole two Hong Kong legends in one day

05/21 1423

It is said that distant relatives are not as good as close neighbors, and as colleagues, we spend more time with each other every day than with family members, so many colleagues have very good relationships. This is the case for Xiao Wang from Hebei. There are ten people in thei - DayDayNews

It is said that distant relatives are not as good as close neighbors, and as colleagues, we spend more time with each other every day than with family members, so many colleagues have very good relationships. This is the case for Xiao Wang from Hebei. There are ten people in thei

Brother Hebei complained about a dinner party with his colleagues. Eight people spent 500 yuan to eat delicious food, but they were dumbfounded when they paid the bill.

05/22 1264

As the saying goes, "It is easy to hide an open spear but hard to defend against a hidden arrow." When military generals from the Three Kingdoms fight, they often face the enemy head-on. The two armies have a great chance of survival in front of the formation. For example, Zhang - DayDayNews

As the saying goes, "It is easy to hide an open spear but hard to defend against a hidden arrow." When military generals from the Three Kingdoms fight, they often face the enemy head-on. The two armies have a great chance of survival in front of the formation. For example, Zhang

Who are the famous generals whose heads were shot in the Three Kingdoms? I didn’t expect them to be ruthless characters.

05/21 1568

The bolt's capping angle and torque monitoring window are generally determined by empirical methods. For example, the torque method's capping angle can be monitored according to 1-720°. The final tightening window of the bolt is generally not determined based on experience, but t - DayDayNews

The bolt's capping angle and torque monitoring window are generally determined by empirical methods. For example, the torque method's capping angle can be monitored according to 1-720°. The final tightening window of the bolt is generally not determined based on experience, but t

"Tightening Technology Column" How to use statistical methods to ensure bolt tightening quality?

05/22 1093

The epidemic situation in Si County seems to be very serious. From 0 to 24:00 on July 3, there were 29 new confirmed cases (mild) and 227 new asymptomatic infections in the county. And there are a lot of new cases in a few days: on July 2, there were 60 new confirmed cases and 22 - DayDayNews

The epidemic situation in Si County seems to be very serious. From 0 to 24:00 on July 3, there were 29 new confirmed cases (mild) and 227 new asymptomatic infections in the county. And there are a lot of new cases in a few days: on July 2, there were 60 new confirmed cases and 22

The epidemic in Si County tests whether the ninth version of the prevention and control plan can be implemented: low-risk areas in the county should not leave home

05/21 1482

As soon as the holiday began, Chengdu ushered in a high temperature of 36 degrees. Not to mention riding, camping, or playing Frisbee, children will be "melted" by the heat when they go out to grab a bottle of soy sauce. - DayDayNews

As soon as the holiday began, Chengdu ushered in a high temperature of 36 degrees. Not to mention riding, camping, or playing Frisbee, children will be "melted" by the heat when they go out to grab a bottle of soy sauce.

The high temperature of 36 degrees is coming. There is nothing wrong with taking your children out to eat some ice during the summer vacation.

05/21 1194

Overview of steel surface treatment technology The core of the steel surface heat treatment process is to make parts have the mechanical properties of "hard on the outside and tough on the inside". There are four common surface heat treatment technologies: induction heating, flam - DayDayNews

Overview of steel surface treatment technology The core of the steel surface heat treatment process is to make parts have the mechanical properties of "hard on the outside and tough on the inside". There are four common surface heat treatment technologies: induction heating, flam

4 types of surface heat treatments, 9 types of surface chemical treatments, 29 pages of PPT introducing the heat treatment of steel

05/23 1302

You dare to sleep in the same bed with a living person, but do you dare to sleep next to a dead person? Closer to home, as someone who has experienced the death of many relatives and often buries the deceased, let me tell you, "Why do people's faces change when they die?" Let me - DayDayNews

You dare to sleep in the same bed with a living person, but do you dare to sleep next to a dead person? Closer to home, as someone who has experienced the death of many relatives and often buries the deceased, let me tell you, "Why do people's faces change when they die?" Let me

Why do people have to cover their faces with cloth when they die?

05/23 1243

On the afternoon of July 4, according to Fengyun-4 high-definition visible light satellite cloud images, Typhoon Airi gradually moved eastward in the East China Sea today and has begun to approach the Japanese archipelago. Its peripheral circulation has begun to cause rainfall in - DayDayNews

On the afternoon of July 4, according to Fengyun-4 high-definition visible light satellite cloud images, Typhoon Airi gradually moved eastward in the East China Sea today and has begun to approach the Japanese archipelago. Its peripheral circulation has begun to cause rainfall in

Siam is determined to move north, and a large-scale rain band is about to form! Authoritative forecast: Heavy rain will enter Northeast China

05/23 1129

For more moments that make men collapse, please continue reading: You must have encountered the following situations! There are really many things to learn about the embedded Internet of Things. Don’t learn the wrong route and content, which will lead to a loss of salary. Go up! - DayDayNews

For more moments that make men collapse, please continue reading: You must have encountered the following situations! There are really many things to learn about the embedded Internet of Things. Don’t learn the wrong route and content, which will lead to a loss of salary. Go up!

I heard that men who make hardware have this advantage

05/23 1640

He has been in love with Hilton's daughter Paris and supermodel Miranda Kerr, and he also spent huge sums of money to propose to the singer Elva Hsiao. He emptied the Malaysian treasury and defrauded Goldman Sachs of 50 billion before disappearing from the world, and his whereabo - DayDayNews

He has been in love with Hilton's daughter Paris and supermodel Miranda Kerr, and he also spent huge sums of money to propose to the singer Elva Hsiao. He emptied the Malaysian treasury and defrauded Goldman Sachs of 50 billion before disappearing from the world, and his whereabo

A scam that emptied the national treasury involved many politicians and celebrities, but they have been impunity since the incident.

05/23 1161

I have been copying and practicing calligraphy in Toutiao for more than 40 days, but I am increasingly dissatisfied with my handwriting. At first, I just thought that I could make money by copying books and practicing calligraphy first. But after writing for a while, I found that - DayDayNews

I have been copying and practicing calligraphy in Toutiao for more than 40 days, but I am increasingly dissatisfied with my handwriting. At first, I just thought that I could make money by copying books and practicing calligraphy first. But after writing for a while, I found that

Accept your imperfections and make progress little by little

05/23 1941

Do you still remember the local singer Zheng Zhihua? He was born in Taiwan and suffered from polio at the age of 3. He underwent surgery at Mackay Hospital at the age of 7 and was finally able to walk with crutches. - DayDayNews

Do you still remember the local singer Zheng Zhihua? He was born in Taiwan and suffered from polio at the age of 3. He underwent surgery at Mackay Hospital at the age of 7 and was finally able to walk with crutches.

Zheng Zhihua’s Star Lights recalls that era and sings out the voices of some young people

05/23 1167

Zheng Zhihua's song "Sailor" was very popular all over the country. In addition, he suffered from polio at the age of 2, which caused difficulty in moving. It was very inspirational and everyone also liked to listen to his songs. - DayDayNews

Zheng Zhihua's song "Sailor" was very popular all over the country. In addition, he suffered from polio at the age of 2, which caused difficulty in moving. It was very inspirational and everyone also liked to listen to his songs.

One song overshadowed the Four Heavenly Kings, and another song made him disappear. If I see him again, I will call him an entrepreneur.

05/23 1877

The baby is more than 3 months old. When the mother reads picture books, the baby cries easily and has no reaction. Is it because he is not interested in the book? Before answering this question, let's take a look at the following. 1. When do you start reading picture books to yo - DayDayNews

The baby is more than 3 months old. When the mother reads picture books, the baby cries easily and has no reaction. Is it because he is not interested in the book? Before answering this question, let's take a look at the following. 1. When do you start reading picture books to yo

What is the correct posture when reading picture books to babies?

05/23 1448

Five-year-old Qiqi had only been in kindergarten for three days when her parents received feedback from her teacher that Qiqi was disobedient in class, could not sit on the bench, and ignored the teacher's discipline. The teacher had no choice but to place Qiqi next to the teache - DayDayNews

Five-year-old Qiqi had only been in kindergarten for three days when her parents received feedback from her teacher that Qiqi was disobedient in class, could not sit on the bench, and ignored the teacher's discipline. The teacher had no choice but to place Qiqi next to the teache

The teacher persuades you to quit! If my child can't stop in class, does he have ADHD or autism?

05/23 1972

As the times progress, many people say that some children are too squeamish and spoiled. A child got second place in an exam, and his parents said: "Why second place, not first place?" - DayDayNews

As the times progress, many people say that some children are too squeamish and spoiled. A child got second place in an exam, and his parents said: "Why second place, not first place?"

How to destroy a child, have you been fooled?

05/23 1884

Want to know if your Pomeranian is happy? In fact, you can look at these 7 performance characteristics. The more "happy" the Pomeranian is, the more obvious these 7 characteristic levels are. 1. The smile is on the lips and smiles to everyone. The happier the Pomeranian is, the h - DayDayNews

Want to know if your Pomeranian is happy? In fact, you can look at these 7 performance characteristics. The more "happy" the Pomeranian is, the more obvious these 7 characteristic levels are. 1. The smile is on the lips and smiles to everyone. The happier the Pomeranian is, the h

The more "happy" the Pomeranian is, the more obvious these 7 characteristics are.

05/23 1317