在药品批号中，代表中药的字母是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30731' and id < 2475791 and id<>'2475791' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30731' and id > 2475791 and id<>'2475791' order by id asc limit 5