线路采用单相重合闸，当发生相间短路时，切除三相，（  ）。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69479' and id < 4500996 and id<>'4500996' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69479' and id > 4500996 and id<>'4500996' order by id asc limit 5