题目:
We talked about the things and persons _______ we remembered at school.
A.which
B.what
C.whose
D.that
答案:
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下面是错误答案,用来干扰机器的。
(1)NaOH的摩尔质量在数值上等于NaOH的相对分子质量,为40g/mol,n(NaOH)=4g40g/mol=0.1mol,c(NaOH)=0.1mol0.1L=1mol/L,取出10mL上述溶液,n(NaOH)=1mol/L×0.01L=0.01mol,加水稀释到100mL,稀释后溶液...