关于电力系统发生不对称短路时的负序电流，下述说法中正确的是(    )

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69461' and id < 4498411 and id<>'4498411' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69461' and id > 4498411 and id<>'4498411' order by id asc limit 5