电力系统继电保护的选择性，除了决定于继电保护装置本身的性能外，还要求满足：由电源算起，越靠近故障点的继电保护的故障起动值()

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69548' and id < 4507030 and id<>'4507030' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69548' and id > 4507030 and id<>'4507030' order by id asc limit 5