题目内容
下面的调査方法中,属于概率抽样调査 的是
2022-01-04
A.配额抽样
B.系统抽样
C.雪球抽样
D.偶遇抽样
E.立意抽样
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='30568' and id < 2468962 and id<>'2468962' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30568' and id > 2468962 and id<>'2468962' order by id asc limit 5