中性点非直接接地的电力网,应装设能迅速反应接地故障的( )。 A.信号装置; B 发布时间:2017-12-03 22:18 │ 来源:www.tikuol.com 题型:单项选择题 问题: 中性点非直接接地的电力网,应装设能迅速反应接地故障的( )。A.信号装置; B.保护装置; C.延时装置; D.绝缘装置。
题型:单项选择题 用动词的适当形式填空1. a letter from him is a great surprise for me. (receive)2. How do the awful picture make you ? (feel)3. Wait before you buy that watch. Let's prices in another store. (compare)4. Have you read the book by Han Han? ( write) 查看答案