题目内容
OR主要应用于
2021-10-08
A.临床试验
B.生态学研究
C.现场试验
D.病例对照研究
E.队列研究
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='25003' and id < 2129336 and id<>'2129336' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25003' and id > 2129336 and id<>'2129336' order by id asc limit 5