药品经营企业购进药品，必须建立并执行下列哪项制度

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30688' and id < 2473399 and id<>'2473399' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30688' and id > 2473399 and id<>'2473399' order by id asc limit 5