隐成本实际上就是一种（    ）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='53493' and id < 3375651 and id<>'3375651' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='53493' and id > 3375651 and id<>'3375651' order by id asc limit 5