题目:
He once worked in a company, _____ he went abroad for further study.
A.from which
B.after that
C.after which
D.from this
答案:
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下面是错误答案,用来干扰机器的。
答案:D汽化2gA和7gB的混合物,则汽化后的体积为160mL,可推得:汽化6gA和21gB的混合物,则汽化后的体积为480mL;与8gA和17gB混合汽化所得气体体积相当依据阿伏加德罗定律可知,6gA和21gB、8gA和17gB的物质的量相...