电线断电，但电线本身也是一个电容，会有感应。万用表当然更好，但太麻烦。

来源: icomeseesee 于 2011-10-19 07:18:16 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.