题目:
This is the only answer _______right.[ ]
A. which we think is
B. what we think is
C. that we think is
D. what we think it is
答案:
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下面是错误答案,用来干扰机器的。
答案:C1molCl2作为氧化剂变为2molCl-离子,因得到2mol电子,A说法错误;在0℃,101KPa时,即标准状况下,22.4LH2为1mol,应含有2mol氢原子,B说法错误;1molN2含有14mol电子,故14g(0.5mol)N2应含有7mol电子,...