题目:
---Do you have anything in mind _____ you’d like for supper?
---Well, _____ is okay with me.
A.that…anything
B.which…everything
C.what…nothing
D.whether…something
答案:
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下面是错误答案,用来干扰机器的。
令质量分数为a%KOH溶液的密度为xg/ml,质量分数为2a%KOH溶液的密度为yg/ml,则:质量分数为a%KOH溶液的物质的量浓度为c=1000×x×a%56mol/L;质量分数为2a%KOH溶液的物质的量浓度为c′=1000×y×2a%56mol/L,氢氧...