题目内容
组成黄酮类化合物的基本骨架是
2021-12-28
A.6C—2C
B.6C—5C
C.3C—6C—3C
D.6C—3C—6C
E.6C—2C—6C
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='30288' and id < 2449067 and id<>'2449067' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30288' and id > 2449067 and id<>'2449067' order by id asc limit 5