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【单选题】
Which of the following scenarios will yield a nonprobability sample?A.
The subjects of the sample are chosen on the basis of known probability.
B.
Items or individuals are chosen without regard to their probability of occurrence.
C.
Every individual or item from the frame has an equal chance of being selected. Selection may be with replacement or without replacement.
D.
Decide on a sample size, n; divide the frame of N individuals into groups of k individuals where k = N/n; randomly select one individual from the first group; select every kth individual thereafter.
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举一反三
【单选题】When main ideas follow a directional pattern, they are organized in
A.
problem-solution order.
B.
spatial order.
C.
topical order.
D.
chronological order.
【简答题】请写出图中道岔各组成部分的名称:1____;2____;3心轨;4____;5____。
【简答题】糖皮质激素不能用于治疗（ ）
【单选题】When main ideas follow a directional pattern, they are organized in __________.
A.
geographical order
B.
topical order
C.
spatial order
D.
causal order
【单选题】根据《 20 1 0 年通则》的解释, FOB 和 FCA 的主要区别是
A.
适合的运输方式不同
B.
办理出口手续的责任方不同
C.
办理进口手续的责任方不同
D.
负责订立运输合同的责任方不同
【单选题】根据《 20 1 0 年通则》的解释, FOB 和 FCA 的主要区别是
A.
适用的运输方式不同
B.
办理出口通关手续的责任方不同
C.
负责订立运输合同的责任方不同
D.
办理进口通关手续的责任方不同
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