系统发生短路故障，当切除故障时对应的实际切除角小于极限切除角时，系统可能是(    )

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69460' and id < 4498502 and id<>'4498502' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69460' and id > 4498502 and id<>'4498502' order by id asc limit 5