若规定功率正方向为母线流向线路，则区内故障时两侧功率（   ）。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69518' and id < 4503731 and id<>'4503731' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69518' and id > 4503731 and id<>'4503731' order by id asc limit 5