故障选相元件应能保证动作选择性。（   ）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69379' and id < 4491617 and id<>'4491617' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69379' and id > 4491617 and id<>'4491617' order by id asc limit 5