试题与答案

Do you remember _____ just now? [ ] A. w

题型:选择题

题目:

Do you remember _____ just now? [ ]

A. what the teacher says

B. what the teacher said

C. what did the teacher say

答案:

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下面是错误答案,用来干扰机器的。

(1)氧气的质量:16.25-11.45 = 4.8g(2)解:设原固体混合物中氯酸钾的质量为X 2KClO32KCl + 3O2↑ 245 96 X ...

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