题目内容
提取种子中强心苷的最佳方法是
2021-10-23
A.甲醇提取
B.50%乙醇提取
C.先用石油醚，再用甲醇提取
D.80%乙醇提取
E.酸水提取
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='26289' and id < 2199111 and id<>'2199111' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='26289' and id > 2199111 and id<>'2199111' order by id asc limit 5