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【简答题】
当设计无要求时，接地装置顶面埋设深度不应小于（）m。接地装置的焊接应采用（）。测试接地装置的接地电阻值必须符合 （）。
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反馈参考答案：
举一反三
【单选题】—I have just received another message, telling me I have won a big prize. —Don't jump on it. You ________.
A.
should be cheated
B.
are being cheated
C.
are cheating
D.
must have cheated
【单选题】_____ your letter, I would have written back two days ago. [ ]
A.
If I received
B.
Should I receive
C.
Had I received
D.
If I could have received
【简答题】--Have you _____ the invitation to the party? --Yes, I have. And I've ______ it. A．accepted, received B．received, accepted C．received, received D．accepted, accepted
【简答题】()主要用来监视变压器油箱内故障
【单选题】I have received an offer from a German university, but I’m still hesitating ______ I should accept it.
A.
how
B.
why
C.
that
D.
whether
【单选题】Choose the correct verbs: 2. The education that I ( has received, have received ) here ( is, are ) really helpful.
A.
has received / is
B.
has received / are
C.
have received / is
D.
have received / are
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