题目内容
核酸分子吸收紫外光的键是
2022-01-05
A.范德瓦尔斯力
B.磷酸二酯键
C.静电斥力
D.碱基共轭双键
E.氢键
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='30631' and id < 2470387 and id<>'2470387' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30631' and id > 2470387 and id<>'2470387' order by id asc limit 5