限时电流速断保护的选择性是由（   ）来保证的。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69246' and id < 4483584 and id<>'4483584' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69246' and id > 4483584 and id<>'4483584' order by id asc limit 5