什么是电能表的爬电距离?
参考答案:
电能表的爬电距离是指两导体间沿绝缘表面测量的最短距离。如220V/380V的三相四线有功电能表,其端子座的最小爬电距离为3.2mm。
_____ by Japan's "purchase" of the Diaoyu Islands, China and Japan lose the opportunity of the 40th anniversary of normalization of diplomatic ties to further promote the bilateral (双边的) relations.
A.Affected
B.Affecting
C.Having affected
D.To be affected
胎盘嵌顿在狭窄环以上可()
A.应用子宫舒张药
B.按摩子宫
C.静脉全身麻醉
D.大刮匙清宫
E.排空膀胱