选择题:389. 抽样调查所特有的误差是()。A. 由于样本的随机性而产生的误差B. 登记误差C. 系统性误

题目内容:
389. 抽样调查所特有的误差是()。
A. 由于样本的随机性而产生的误差
B. 登记误差
C. 系统性误差
D. ABC都错
参考答案:

It is also a good way for people to know each othe

It is also a good way for people to know each other and can promote 9 between

查看答案

【单选题】What I saw and heard in china made a deep imp

【单选题】What I saw and heard in china made a deep impression _ me.A、onB、inC、atD、wit

查看答案

【判断题】Her brother doesn.t ,study at this college an

【判断题】Her brother doesn.t ,study at this college any more.

查看答案