摘要:2.有30位同学.编号从1至30.现在从中抽取6人作问卷调查.用系统抽样方法确定所抽的编号可能为 A.5, 10, 15, 20, 25, 30 B.2, 6, 10, 14, 18, 22 C.2, 4 6, 8, 10, 12 D.5, 8, 11, 14, 17, 20

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