A. They work five days a week. B. They are all the man's friends.
A. They work five days a week.
B. They are all the man's friends.
C. They are paid by the hour.
D. They all enjoy gambling.
查看答案
用于110kV及以上的电压互感器的辅助二次绕组，其额定电压为100V，而用于中性点不接地的35kV及以下系统的电压
为什么发电厂和变电所的6～35kV户内配电装置都采用矩形母线？
电压互感器二次侧为什么不许短路但必须接地？电流互感器在运行中为什么不许开路？
微信支付 
支付宝支付