从总体全部单位中直接按随机原则抽取样本单位,使每个总体单位都有同等机会被抽中的抽样形 发布时间:2017-12-27 11:28 │ 来源:www.tikuol.com 题型:单项选择题 问题: 从总体全部单位中直接按随机原则抽取样本单位,使每个总体单位都有同等机会被抽中的抽样形式是( )A.整群抽样B.等距抽样C.分类抽样D.简单随机抽样
题型:单项选择题 根据汉语提示,将英语句子补充完整。1.Would you like to go camping with us_______________? (在你的下个休息日)2.Did they have much fun _______________ (开车兜风)yesterday evening ?3.Tony went on a trip to Hong Kong with his father_______________(在去年年底).4.Mary spent the whole morning cleaning her room.She was _______________(累但是高兴).5.Don't you think it wonderful to _______________(雨中散步)? 查看答案