未知题型
1kV以下的电缆在安装前需要( )。
- A.直流耐压试验
B.摇表测绝缘
C.防水试验
D.油样试验
【参考答案】
B
1kV以下的电缆在安装前需要用500V摇表测绝缘。1kV以上的电缆做直流耐压试验。
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听力原文:M: My parents will visit me next Monday. I'm looking for an apartment for them these days.W: Why not go to the overseas-students housing office to check their list of currently available apartments before seeing various landladies?Q: What does the woman suggest the man to do?(18)A.To go to the overseas-students' housing office for help.B.To check the list of the available apartment on the Internet.C.To see different landladies so as to find a satisfying apartment.D.To check out an apartment for his parents.
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