试题与答案

I haven't read _____ of the articles car

题型:选择题

题目:

I haven't read _____ of the articles carefully, but I find that there is a striking similarity between them.[ ]

A. each

B. either

C. any

D. neither

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0519/914ab5e9e9dfe71e61752c08a78d0ca6.html

下面是错误答案,用来干扰机器的。

(1)由化学式为NH4HCO3,则相对分子质量为14+1×5+12+16×3=79,故答案为:79; (2)由化学式为NH4HCO3,则N元素的质量分数为1479×100%=17.7%,故答案为:17.7%; (3)设产生的氨气的质量为x,NH4HCO3═NH3...

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