药品的检验程序中，杂质检查之前应进行的步骤是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30355' and id < 2453288 and id<>'2453288' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30355' and id > 2453288 and id<>'2453288' order by id asc limit 5