应避免局部防污闪漏洞或防污闪死角,如具有多种绝缘配置的线路中相对薄弱的区段,配置薄弱的耐张绝缘子,输变电结合部等。()
参考答案:对
21st Century is ______ a newspaper; it helps us know a lot about the world.
A.more than
B.no more than
C.not more than
D.no less than
电力系统安全经济运行的基本要求是什么?