.在一些市场调查中,比如在对调查的总体不甚了解,或者调查的总体过分庞杂时,往往采用()抽取样本。
A.随机抽样
B.任意抽样
C.非随机抽样
D.等距抽样
参考答案:C
The girl kept complaining about her former boss in the interview, which made a bad on the
interviewer. [ ]
A. expression
B. impression
C. opinion
D. feeling
A.+→+
B.+→+
C.+→+
D.+→+