60kV的配电装置,在土壤电阻率>500Ω·m的地区一般采用
A. 将避雷针装在构架上
B. 安装独立避雷针
C. 安装独立避雷线
D. 安装接地线
查看答案
变电站进线端保护的作用有
A. 限制雷电流幅值
B. 限制入侵波陡度
C. 限制雷电流作用时间
D. 加固导线
进线端保护的长度一般为1~2km
A. 对
B. 错
变压器的门型架构上可装设避雷针
A. 对
B. 错
1. When the speaker was a little boy, he often fell out of (1) ____ and off his (2) ____. When he got hurt, his mother would wipe away his (3)____.2. At age 15, when the speaker didn't have enough money to buy a new computer, his mother said nothing because she wanted him to learn his (4) ____ and manage his (5)____.3. Now the speaker realizes how his mother has prepared him. She's respected his (6) ____, and has made sure he could understand his (7) ____ and has let him know that she'll always be there to catch him when he (8) ____.