隔离开关可以在有电压.无负荷电流条件下，分.合线路。(   )

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69524' and id < 4504331 and id<>'4504331' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69524' and id > 4504331 and id<>'4504331' order by id asc limit 5