题目内容
聚酰胺柱色谱分离下列黄酮，最先出柱的是
2021-10-23
A.5，7，4′-羟基黄酮
B.，4′-羟基黄酮
C.3，5，7，3′，4′-羟基黄酮
D.5-羟基-7，4′-甲氧基黄酮
E.5，7-羟基黄酮
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='26291' and id < 2199380 and id<>'2199380' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='26291' and id > 2199380 and id<>'2199380' order by id asc limit 5