1We must do something to ___ the factories sending out poisonous gases so as to keep the city clean and beautiful. A. keep B. protect C. permit D. prevent 2We must do something to ___ the factories sending out poisonous gases so as to keep the city clean and beautiful.A.keepB...
• Keep the device out of reach of children.• The operating temperature ranges from –40°C to +85°C, and the storage temperature ranges from –40°C to +70°C. Do not touch the device at high temperatures.• Your device meets requirements of IP68.• Only qualified professionals...
Gases don't have a fixed shape or a fixed volume. The particles move around all the time and spread out. This is why a gas fills its container. A gas can be compressed into a very small space – this pushes the particles closer together. How do we liquefy gases? In general, gases ...
1【题目】W e must do something to th e factories sending out poisonous gases so as to keep th e city clean and beautiful. A.keep B.protect C.permit D.prevent 2【题目】We must do something tothe factories sending out poisonous gases so asto keep the city clean and beautiful. A. kee...
The sun is essentially a giant fusion reactor, radiating heat and plasma, and it'll keep onburning for billions of years. In order toharness solar energyproduction in a form that can power everyday devices, humanity has come up with photovoltaic cells, commonly known as solar panels. Buthow...
The sun is essentially a giant fusion reactor, radiating heat and plasma, and it'll keep onburning for billions of years. In order toharness solar energyproduction in a form that can power everyday devices, humanity has come up with photovoltaic cells, commonly known as solar panels. Buthow...
a. To cause to act in a specified manner: Heat makes gases expand. b. To compel: made him quit. 7. a. To form in the mind: make an estimate. b. To compose: make verses. 8. a. To prepare; fix: make dinner. b. To get ready or set in order for use: made the bed. c...
They give off a lot of greenhouse gases (温室气体)(especially CO2) into the air. This warms the earth. As a result, many animals are dying out, (A)___as penguins (企鹅)and polar bears. It will soon make a difference to us as well. (D) Sea levels will rise and many cities a...
Inside your engine’s combustion chamber, a spark ignites the mixture of fuel and air, creating a series of combustions or contained explosions inside the cylinder.The direct byproducts of such explosions are exhaust gases that get funneled down the exhaust system. Before exiting through your ...
We must do something to ___ the factories sending out poisonous gases so as to keep the city___. [ ] A. keep; being polluted B. keep; from being polluted C. prevent; being polluted D. prevent; from being p