皮皮学，免费搜题
登录
搜题
【多选题】
常用随机抽样调查的方法有( )A.
理论抽样
B.
单纯随机抽样
C.
分层抽样
D.
系统抽样
E.
整群抽样
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】Jim goes to Tokyo for the first time. He wants to see his aunt. But when he walks out of the station, he can't find his way. The city is now quite different. He sees a man outside a police station, so...
【简答题】LEFT("好好学习",3)的值是
【简答题】Directions: Choose the best answer to complete each of the following sentences according to the information contained in Text A. 1)The author decided to have a cashless journey across America to _____...
【简答题】I see the nursery (苗圃). It is like a sea of green. There are lots of trees and a big vegetable garden. I walk inside the gate. It is quiet here, and it smells so good. A voice says, “Welcome! I see yo...
【简答题】Read passage B again and circle the best answer. C ould I Change My Life? Good evening, ladies and gentlemen. It’s a great honor to stand here and share with you my experience about change. Have you e...
相关题目：