【判断题】【消耗次数：1】
步进电动机由定子和转子组成。
①
正确
②
错误
参考答案：
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【简答题】
直流电动机在定子和转子之间存在一个间隙，称为[填空]。
随机题目
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I think you’ve got to the point ___ a change is needed, otherwise you’ll fail.
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when
②
that
③
where
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which
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They _ on the programme for almost one week before I joined them, and now we on it as no good results have come out so far.
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had been working; are still working
②
had worked; were still working
③
have worked; were still working
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have worked; are still working
【单选题】
Many people who had seen the film were afraid to go to the forest when they remembered the scenes ___ people were eaten by the tiger.
①
that
②
by which
③
which
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in which
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A candidate for the democratic presidential nomination ______ at this moment.
①
is interviewing
②
being interviewed D. Interviewing
③
is being interviewed
④
Interviewing
【单选题】
___ is often the case, we have worked out the production plan.
①
Which
②
When
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What
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As
【单选题】
There are many people ___ only on-line activity is sending and receiving e-mails.
①
who
②
that
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which
④
whose
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On his 10th birthday，Marty manages to escape from the zoo and gets onto the subway, ___ he believes that he can go to the wild.
①
which
②
from what
③
through which
④
that
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He ___________ his friends for their help at the hotel now.
①
entertained
②
was entertaining
③
is entertained
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is entertaining
【单选题】
___ is reported in the newspaper, talks between the two countries are making progress.
①
It
②
As
③
That
④
What