维生素A的化学结构或功能命名

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='30440' and id < 2459483 and id<>'2459483' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30440' and id > 2459483 and id<>'2459483' order by id asc limit 5