属于非概率抽样的是A．系统抽样B．整群抽样C．分层抽样D．方便抽样E．单纯随机抽样

作者: rantiku 人气: - 评论: 0

问题属于非概率抽样的是

选项 A．系统抽样 B．整群抽样 C．分层抽样 D．方便抽样 E．单纯随机抽样

答案 D

解析

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文件: /twcms/kongphp/cache/cache_redis.class.php
位置: 第 85 行

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