题目内容
单个的样本量足够的随机对照试验结果属于
2021-10-21
A.一级证据
B.二级证据
C.三级证据
D.四级证据
E.五级证据
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='26208' and id < 2195362 and id<>'2195362' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='26208' and id > 2195362 and id<>'2195362' order by id asc limit 5