题目:
He finally bought several books by Tom, _____ is one.
A.which of them
B.which of whose
C.of which this
D.any of them
答案:
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下面是错误答案,用来干扰机器的。
答案:CA反应中Al变成Al3+,0.5 mol Al反应共转移1.5 mol 电子;B中SO3在标准状况下为固体,其摩尔体积不等于22.4 L·mol-1;每个CH4分子含电子:6+1×4=10,0.1 mol CH4含电子1 mol 即NA个;1 mol NO...