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【单选题】
施工现场用电系统中，连接用电设备外露可导电部门的PE线应采用()。A.
绝缘铜线
B.
绝缘铝线
C.
裸铜线
D.
钢筋
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举一反三
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【单选题】A: You seem to have a lot of work to do in your office. You've always been working overtime. B: ______
A.
You are right, but don't you know the meaning of work?
B.
Sorry, I don't think so. I get overpaid overwork, you know.
C.
That's right. All work and no play makes Jack a dull boy.
D.
That's right, but the work is interesting. I don't mind some extra hours at all
【简答题】They have offices in the ______ (commerce) heart of the city.
【单选题】They have offices in the ___________ heart of the city.
A.
commerce
B.
commercialize
C.
commercial
D.
commercially
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