It is everyones duty to do someting good to the environment around us.As middle school students, we can also do a lot of helpful things.For example, we can protect it by not throwing rubbish away.We can save water to make full use of it. We can use materials which do no harm to t...
How to Use an Oxygen Tank at Home This step will explain how to operate your oxygen cylinder. Attach the tubing and nasal prongs (cannula) to the oxygen regulator nipple as required. Be sure to check that the tubing is not bent or blocked. ...
In consideration of many customers requesting processing instruction when they buy our molecular sieve to fill the oxygen concentrator, so we hereby have a brief introduction as below.In simple words, an oxygen concentrator works on electricity; takes in room air, removes nitrogen from it and ...
Staying hydrated isn’t just about keeping thirst at bay – water is essential for the human body to function, transporting nutrients and oxygen around the body. It’s also important for your mind, with even the smallest amount of dehydration leading to impaired concentration and alertness, ...
阅读理解。 Do you know how to keep fish at home? The fish need room. They must not be crowded (拥挤). Fish need oxygen (氧气). Fish get it from water in the tank. There must be enough water for all fish in the tank. So the si
Do you know how to keep fish at home? The fish need room. They must not be crowded(拥挤). Fish need oxygen(氧气). Fish get it from water in the tank. There must be enough water for all fish in the tank. So the size of the tank is important.....
A: First, everyone should eat their meals from their own dishes. Second, masks should be worn on social occasions. When people are next to each other, wearing masks is beneficial. Lock yourself in at home alone will make anyone go crazy. It's OK to meet people in small number while we...
Mother Earth is a home for all beings, but we are destroying forests and wildlife and have polluted the air, water and soil. Now it is time to raise our voices against all injustices done to our Mother Earth.
Do you know how to keep fish at home? The fish need room. They must not be crowded (拥挤). Fish need oxygen (氧气). Fish get it from water in the tank. There must be enough water for all fish in the tank. So the size of the tank is important. ...