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【单选题】
事先将总体各单位按某一的标志排列,然后依据固定的顺序和间隔来抽选调查单位的抽样组织方式是()
A.
分层抽样
B.
简单随机抽样
C.
整群抽样
D.
等距抽样
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【判断题】First impression is very important since you never get a second chance to make a first impression. Hair should be well maintained. Unshaved look does not work for others. Ties should be correctly tie...
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