单剂迸大于0. 5g的药物不宜制备（    ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='27490' and id < 2270603 and id<>'2270603' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27490' and id > 2270603 and id<>'2270603' order by id asc limit 5