In a certain experiment, a gas is produced that extinguishes a burning candle. What gas could it be? A. Hydrogen B. Oxygen C. Nitrogen D. Carbon dioxide 相关知识点: 试题来源: 解析 D。二氧化碳气体不支持燃烧,能使燃烧的蜡烛熄灭。氢气、氧气、氮气都不能使燃烧的蜡烛熄灭。
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It’s the gases natural gas and the burning of coal give off add to the overheating of the earth.A.that; whatB.that; that C.which; which D.that; which
5.根据And they die when they are out of gas.可知答案。 1.T;2.F;3.F;4.F;5.T.相关推荐 1阅读理解。 What are stars? Stars are huge hot balls of burning gas in space. They look small because they are far away from us. The Sun is a star. But some stars are much bigger than ...
The definition of a greenhouse gas is at the same time very simple and very complicated for the ordinary man (or woman !) : such a gaz is “just” a gas mixed in the atmosphere thatabsorbs the infrared radiation emitted by the earth’s surface. We are not accustomed to these gases bec...
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Net zero is an ideal state where the amount of greenhouse gases released into the Earth’s atmosphere is equal to the amount removed. Emission removal and reduction through decarbonization efforts are needed to reach net zero.
The most abundant of the GHGs, CO2emissions represent three-quarters of all human-caused GHG emissions. The primary source of CO2emissions is the burning of fossil fuels such as coal, oil and natural gas for energy and transportation. CO2is also released through deforestation and other land-use...
4. Which of the following statements about a rocket is NOT true? A) It can fly when there is no air. B) It can fly without wings. C) It is made of strong metal. D) It is propelled by burning gas inside it. 5. A rocket is pushed up into the air when A) hot gas rushes ou...