宜用碱液提取，加酸调至酸性后可从水中沉淀析出的成分有

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='29376' and id < 2392726 and id<>'2392726' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29376' and id > 2392726 and id<>'2392726' order by id asc limit 5