题目内容
方法比较试验时的样本数至少为（ ）
2021-10-08
A.20个
B.30个
C.40个
D.50个
E.100个
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='25025' and id < 2130689 and id<>'2130689' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25025' and id > 2130689 and id<>'2130689' order by id asc limit 5