百度试题 结果1 题目Carbon dioxide lasers commonly used gas mixture composition is composed of (), helium, argon, nitrogen. A. Carbon monoxide B. Carbon dioxide C. Oxygen D. Neon gas 相关知识点: 试题来源: 解析 B 反馈 收藏
carbon dioxide is considered an important greenhouse gas, more than methane. The concentration of carbon dioxide in the atmosphere has risen through the years. One of the major factors that led to this rise ishuman activities. At the onset of theAge of Industrialization, the concentration of car...
The planet which has a very thick atmosphere mainly composed of carbon dioxide is _. A. Venus B. Mars C. Jupiter D. Neptune 相关知识点: 试题来源: 解析 A。解析:金星(Venus)有非常厚的大气层,其主要成分是二氧化碳。火星(Mars)大气层很稀薄,木星(Jupiter)大气成分复杂但不是以二氧化碳为主,海王星...
varied:consisting of or including many different kinds of things or people,especially in a way that seems interesting. 各种各样的:具有或由许多种类和形式组成的。variant (n. adi);something that is slightly different from the usual form. of something. 指同常规事物有些许差异的,变异的。variable:易...
Carbon dioxide is a molecule composed of two oxygen atoms covalently bonded to a single carbon atom (Fig. 11.1). It is colorless and exists in gaseous form at room temperature. In nature, carbon dioxide is used by plants during photosynthesis to make sugar, for example, and it is liberated...
Answer to: Carbon dioxide concentration in the bloodstream is controlled mainly by the: a) kidneys. b) lungs. c) liver. d) red blood cells. By...
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1.Air is composed of ___gases including hydrogen, oxygen, and carbon dioxide. A.varied B.variant C.variable D.various 相关知识点: 试题来源: 解析 1.D 句意:空气是由氢、氧、二氧化碳等各种各样的气体组成的。various各种各样的,强调各种不同的,并且常放在名词前作定语;varied不同的;variable可变的...
4.3.U9 Carbon dioxide is produced by combustion of biomass and fossilized organic matter. 石油(oil)和天然气(gas)的形成(fossil fuels) 泥炭纪(Carboniferous era)时期,岩化(lithification)大量发生,沉积物转变成石头,部分降解的泥碳在高压高温的环境中(比如被压在石头等沉积物下)经历上百万年会转变成煤(coal...
Which planet has a very thick atmosphere mainly composed of carbon dioxide and is the second planet from the Sun? A. Earth B. Venus C. Mars D. Mercury 相关知识点: 试题来源: 解析 B。解析:金星(Venus)有非常浓厚的大气层,其主要成分是二氧化碳,并且它是距离太阳第二近的行星。地球(Earth)的...