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...
百度试题 结果1 题目(10)-What is the percentageof 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
vacancies (crystal)/ nitrogen-vacancy centersdopingquantum computerIn order to advance quantum computer after successful synthesis of a qubit (quantum-bit) using a NV (nitrogen-vacancy) center in diamond crystal, the innovation of a NOT processor is strongly demanded. A candidate of it can be ...
百度试题 结果1 题目【题目】-What is the air?-Mainly nitrogen(氮气).A.made fromB.made up ofC.made of 相关知识点: 试题来源: 解析 【解析】B 反馈 收藏
百度试题 结果1 题目What is the chemical symbol for nitrogen? A. N B. Ni C. Na D. Ne 相关知识点: 试题来源: 解析 a) Sun 反馈 收藏
Nitrogen (N) is a key component of fundamental biomolecules. Hence, the cycling and availability of N is a central factor governing the extent of ecosystems across the Earth. In the organic-lean sediment porewaters underlying the oligotrophic ocean, where low levels of microbial activity persist ...
The 98% grade is more stable in storage, and is the usual form of what is described as concentrated sulfuric acid. Other concentrations are used for different purposes. Some common concentrations are10%, dilute sulfuric acid for laboratory use,33.5%, battery acid (used in lead-acid batteries)...
aIn addition Illustrate what happens if not sufficient nitrogen purity is reached. 另外说明发生了什么如果不充足的氮气纯净被到达。[translate] aLOOK AT MY BACK 看我的后面[translate] aShere is the measure of how fast a person can run Shere是措施多快人能跑[translate] ...
From what I know, all nitrogen fertilizer is sold as either urea or ammonia depending on where you live. Urea is a solid and ammonia is a gas that gets "pumped" into the ground. It's the same stuff people steal to use for meth production. I'm not sure how they make it, though....
What is the Best Biological Process for Nitrogen Removal: When a钩过来谈谈心编辑于 2024年03月18日 19:24 收录于文集 Perry L. McCarty · 1篇分享至 投诉或建议评论 赞与转发目录 0 0 0 0 0 回到旧版 顶部登录哔哩哔哩,高清视频免费看! 更多登录后权益等你解锁...