The atmosphere is a mixture of , including oxygen, water vapor, etc. (gas) 相关知识点: 试题来源: 解析 1.gases 【解答过程】句意:大气是气体的混合物,包括氧气,水蒸气等等。根据“including oxygen, water vapor, etc.”可知此处指不同的气体种类。故填gases。
Air is a mixture of gases. Which gas is essential for combustion? A. Oxygen. B. Nitrogen. C. Carbon dioxide. D. Hydrogen. 相关知识点: 试题来源: 解析 A。氧气是燃烧必需的气体。B 选项氮气不是燃烧必需的;C 选项二氧化碳不是燃烧必需的;D 选项氢气不是空气中主要成分也不是燃烧必需来自空气。
A.not every ofB.not allC.none ofD.all of 2Air is the mixture of gases in which () the gas is oxyen. A. not every of B. not all C. none of D. all of 3Air is the mixture of gases in which ___ the gas is oxygen. A.not every ofB.not allC.none ofD.all of 4 ...
The air we breathe is a mixture of gases. What is air? A. A liquid B. A gas C. A solid D. A powder 相关知识点: 试题来源: 解析 B。我们呼吸的空气是气体的混合物。选项 A 液体错误;选项 C 固体错误;选项 D 粉末错误。反馈 收藏 ...
aAir is a mixture of gases, consists mainly of nitrogen and oxygen, by volume, about 78% of the nitrogen in the air, oxygen and inert gas accounted for 21%, accounted for 0.94, accounting for about 0.03 of the carbon dioxide, water vapor and impurity accounted for about 0.03 of the. ...
百度试题 结果1 题目Air is the mixture of gases in which ___ the gas is oxygen. A. not every of B. not all C. none of D. all of相关知识点: 试题来源: 解析 B 反馈 收藏
Again, the simulation and the average are obtained in the same fa 测量学会的率的单程是使用普通属性被察觉的变化随着时间的 [translate] aAir is a mixture of gas,of which oxygen forms 2l% by volume. 空气是气体混合物,其中氧气由容量形成2l%。 [translate] ...
解析 10. Air is a mixture ofgases.(gas) 结果一 题目 Air is a mixture of invisible gas. 答案 gas改成gases本题考查名词单复数,gas做气体时可数名,多种气体的混合,所以用复数。相关推荐 1Air is a mixture of invisible gas. 反馈 收藏
Oxygen is separated from a gas mixture using a solid electrolyte electrochemical cell comprising the above described homogeneous structure and current collectors. An Independent claim is also included for an electrochemical cell for carrying out the above process.BOIVIN JEAN CLAUDE...
🔔高频单词:mixture ▶mixture:英 ['mɪkstʃə(r)]n. 混合;混合(状态);混合物;混合剂;混杂;合剂;双语例句:Air is a mixture of gases.空气是多种气体的混合物。 记忆技巧:mixt vt.配制 + -ure 表名词 💥词汇搭配:cough mixture 止咳药水;止咳剂mixture ratio 混合比例gas mixture 气体混合物...