电力系统的横向故障指的是(    )。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69507' and id < 4502761 and id<>'4502761' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69507' and id > 4502761 and id<>'4502761' order by id asc limit 5