题目内容
为提高药材中弱酸性成分的提取效率，可加入的是
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='30087' and id < 2436106 and id<>'2436106' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30087' and id > 2436106 and id<>'2436106' order by id asc limit 5