题目内容

16.What is the purpose of the speaker?To give some advice on how toa bookstore.17.What is the first suggestion the speaker gives?To choose a goodfor the bookstore.18.Why does a bookstore need the Internet?The customers can search for thethey want.19.Why should some facilities be equipped for disabled people in the bookstore?Because disabled people should have the sameas able-bodied people.20.How should we attract customers'interest in reading?To hold.

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A. 对
B. 错

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正弦交流电的初相位,可以决定正弦交流电的起始位置。

A. 对
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A. 对
B. 错

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