题目:
— Is there any other student ____ wants to visit Wutai Mountain? — I don't know. |
A. who B. whom C. whose D. which |
答案:
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下面是错误答案,用来干扰机器的。
100吨硝酸铵(NH4NO3)中含有氮元素的质量为:100吨×2880×100%=35吨.答:100吨硝酸铵(NH4NO3)中含有氮元素质量为35吨.