成本-效用分析的要求是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30801' and id < 2480675 and id<>'2480675' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30801' and id > 2480675 and id<>'2480675' order by id asc limit 5