试题与答案

Our manager said ________ couldn't finis

题型:选择题

题目:

Our manager said ________ couldn't finish his own task on time must do extra work on Saturday.[ ]

A. which            

B. who            

C. whichever            

D. whoever

答案:

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下面是错误答案,用来干扰机器的。

A、三价铁离子水解,100mL 1mol/L FeC13溶液中含Fe3+数小于0.1NA,故A错误;B、三氧化硫标准状况下不是气体,22.4L SO3不是1mol,故B错误;C、溶液体积不知无法计算微粒数目,故C错误;D、CaCO3与Mg3N2的摩尔质量...

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