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【单选题】
电能表的直观检查是凭借()进行的。A.
检查组到目测或简单的工具。
B.
检测工具和仪器。
C.
检定装置。
D.
专门仪器。
拍照语音搜题，微信中搜索"皮皮学"使用
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举一反三
【单选题】One way to learn English better is to gain _____ knowledge of the culture of English speaking countries. [ ]
A.
/
B.
the
C.
a
D.
one
【简答题】用所给词的正确形式填空. 1. I have two ______ (dictionary). One is English-Chinese dictionary, and the other is Chinese-English dictionary. 2. A: What's the result of the race, Mary? B: Jane is the ______ (one) i...
【简答题】乙类互补功率放大电路的效率较高,在理想情况下可达( ),但这种电路会产
生( )失真。为了消除这种失真应使功率管工作在( )状态。
【简答题】English is one of the ______ languages at international meetings.
【单选题】I think it ______ that one have a good command of English if one wants to be engaged in international trade. [ ]
A.
useful
B.
a must
C.
essential
D.
vital
【简答题】A．Only one student of the English department. B．All the students of the English department. C．Some students in the English department. D．None of the above.
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