上下级保护装置只要动作时间配合好，就可以保证选择性要求。()

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69548' and id < 4507101 and id<>'4507101' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69548' and id > 4507101 and id<>'4507101' order by id asc limit 5