难以通过胎盘膜孔转运的水溶性药物的分 子量界限是

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='29767' and id < 2417121 and id<>'2417121' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29767' and id > 2417121 and id<>'2417121' order by id asc limit 5