题目:
套管末屏对地绝缘电阻应大于等于()。
A.1000MΩ
B.2000MΩ
C.2500MΩ
D.3000MΩ
答案:
参考答案:A
套管末屏对地绝缘电阻应大于等于()。
A.1000MΩ
B.2000MΩ
C.2500MΩ
D.3000MΩ
参考答案:A
A. What can you see in the sky?
B. Is there a plane in the sky?
C. How many planes are there?
D. Where is the plane?
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