Proteins are made of carbon, hydrogen, oxygen and nitrogen atoms. A. 正确 B. 错误 如何将EXCEL生成题库手机刷题 如何制作自己的在线小题库 > 手机使用 分享 反馈 收藏 举报 参考答案: A 复制 纠错 举一反三 检查表是指导现场审核的工具,审核时应严格按检查表进行,不得偏离(x)。94.文件初审应确...
【解析】首句中的 usually 和 and是本题逻辑推理的线索。and前后构成了并列关系,即 and前的usually carbon,hydrogen,oxygen 这些维生素成分和and后面的 nitrogen 成分形成并列关系,因此修饰carbon,hydrogen,oxygen 的 usually必然和修饰nitrogen 的第1空的词构成对应的逻辑关系。鉴于此,在第1空考虑填入的应是和 usually...
解析 D本题考查语境选词。句意:空气是由氢气、氧气和二氧化碳等___气体组成的。fortunate幸运的;considerate考虑周到的;curious好奇的;various各种各样的。由常识及句中的including hydrogen, oxygen and carbon dioxide 可知空气中含有多种气体。反馈 收藏
A. hydrogen and oxygen B. nitrogen and oxygen C. carbon and oxygen D. helium and oxygen 相关知识点: 试题来源: 解析 A。水是由氢和氧组成的,选项 B 氮和氧组成的不是水,选项 C 碳和氧组成的不是水,选项 D 氦和氧组成的也不是水,所以选 A。反馈...
This shows that water is made up of ___. A. hydrogen and oxygen B. hydrogen and nitrogen C. oxygen and nitrogen D. carbon and oxygen 相关知识点: 试题来源: 解析 A。水的符号是 H₂O,表明水是由氢和氧组成。选项 B、C、D 中的组合都不是水的组成成分。反馈 收藏 ...
A. oxygen and nitrogen B. hydrogen and helium C. carbon dioxide and water vapor D. iron and nickel 相关知识点: 试题来源: 解析 B。太阳主要由氢和氦组成。“oxygen and nitrogen”是氧气和氮气,“hydrogen and helium”是氢和氦,“carbon dioxide and water vapor”是二氧化碳和水蒸气,“iron and nic...
To turn it into protein,microbes (微物),similar to those in the production of wine and yogurt, will be fed on it to grow and reproduce. During the process, water is split into hydrogen and oxygen. Along with a growth medium containing necessary minerals, the three gases are pumped in to...
百度试题 结果1 题目【判断题】Organic compounds are made up of only hydrogen and carbon 相关知识点: 试题来源: 解析 错误 反馈 收藏
【小题1】 Meat made from airIt is hard to imagine that food consisting of protein could be produced from CO2, but that is exactly what Solar Foods is working on. To create the protein, the company uses renewable energy to split water cells into hydrogen and oxygen. 【小题2】 This is ...
Improvements made to the preparation of the hydrogen, nitrogen and carbon dioxideHARGER JOHN