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【单选题】
定性分析和衡量主接线的可靠性时,以下不是评判标准的是()A.
断路器故障时，停路数的多少
B.
断路器检修时，停运方便性
C.
发电厂全部停运的可能性
D.
断路器检修时，能否不影响供电
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【简答题】润滑脂的主要物理性能指标是 _______________ 和 _______________ ;动压润滑轴承润滑油最重要的性能指标为 ____________________ 。
【单选题】I have only ten yuan with me, ___________ I can’t buy the expensive dictionary.
A.
thought
B.
but
C.
so
D.
because
【单选题】-What！Ten minutes ago you told me there were no rooms. You just gave one to that man! -You ________ to understand, sir. That man has a reservation. [ ]
A.
didn't seem
B.
don't seem
C.
haven't seemed
D.
hadn't seemed
【单选题】2 What are the two general levels of usage for language? A. Polite and impolite language. B. Textbook and conversational language. C. Formal and informal language. D. Spoken and written language.
A.
B.
C.
D.
D
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