系统发生短路故障后，越靠近短路点，正序电压（   ）。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68469' and id < 4420608 and id<>'4420608' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68469' and id > 4420608 and id<>'4420608' order by id asc limit 5