当电力系统发生短路故障时，保护的动作时间越小越好。（   ）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69391' and id < 4491804 and id<>'4491804' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69391' and id > 4491804 and id<>'4491804' order by id asc limit 5