对于双母线接线方式的变电所，当某一出线发生故障且断路器拒动时，应由（    ）切除电源。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69488' and id < 4501110 and id<>'4501110' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69488' and id > 4501110 and id<>'4501110' order by id asc limit 5