(  ）是防止电气设备事故的重要手段，能及时发现设备中潜伏的缺陷，对电力系统安全具有重要意义。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69491' and id < 4501629 and id<>'4501629' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69491' and id > 4501629 and id<>'4501629' order by id asc limit 5