对单侧有电源的电网，瞬时电流速断保护对下级线路故障应动作。()

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69548' and id < 4507113 and id<>'4507113' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69548' and id > 4507113 and id<>'4507113' order by id asc limit 5