1) Nitrogen is present in the air. : 氮存在于空气中。 2) Oxygen is presnt in the air. 氧存在于空气中。 3) The universe exists in space. 宇宙存在于太空。 4) It is carried in body fluids. 存在于体液中。 5) consist in 在于,存在于 ...
百度试题 结果1 题目(10)-What is the percentage of nitrogen(氮) in the air?-About 78 percent . (percent) 相关知识点: 试题来源: 解析 答案见上 反馈 收藏
A. Fix nitrogen in the air B. Decompose organic matter C. photosynthesis D. Parasitism 相关知识点: 试题来源: 解析 A。固氮细菌的主要作用是将空气中的氮气固定。分解有机物不是固氮细菌的主要作用;光合作用不是固氮细菌的作用;寄生不是固氮细菌的作用。反馈...
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. ...
Air is the main component of nitrogen 翻译结果4复制译文编辑译文朗读译文返回顶部 Main elements of the atmosphere is nitrogen 翻译结果5复制译文编辑译文朗读译文返回顶部 main elements of the atmosphere is nitrogen gas; 相关内容 a柴油机制造[translate] ...
The process according to which the nitrogen of the air is rendered usable, in an advantageous manner, in the form of an azide (az2)ROTH LEONHARDT
百度试题 结果1 题目(10)-What is the percentage of nitrogen () in the air?-About 78percent . (percent) 相关知识点: 试题来源: 解析 答案见上 反馈 收藏
Air is not just one gas. It is a mixture of different gases. Because we can't see the gases in the air, it is difficult to think about them.There are four main gases in the air: oxygen (气), nitrogen (), carbon dioxide (.化碳)and argon().If 1,000 dots can represent the ...
This doesn't help me because i need to know what raw materials make up nitrogen. ByNitro— On Aug 06, 2009 What is the process of converting compressed air to N2 nitrogen gas? If the compressed air can produce 45 psi up to 100 psi; what is the corresponding percentage of N2 nitrogen...
carbonide carboniferousperiod carbonization reactio carbonizationnitrogen carbonized depth carbonized yarn carbonizing dryer carbonochloridic acid carbonsequestration carbontetrachloridefu carbontracker carbonyl dithiocarbon carbon impregnated carboon line carborundum point carbostyril carbothioamide carboxylesterase carboxym...