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【判断题】
PPS 抽样是一种不放回的与单元规模大小成比例的概率抽样A.
正确
B.
错误
手机使用
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分享QQ
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反馈参考答案：
举一反三
【简答题】七、严禁在景区内游泳、嬉水,儿童须在成人陪同下游览。
【单选题】[09-588]Excel工作表B列保存了11位手机号码信息,为了保护个人隐私,需将手机号码的后4位均用“*”表示,以B2单元格为例,最优的操作方法是:
A.
=REPLACE(B2,8,4,"****")
B.
=MID(B2,8,4,"****")
C.
=MID(B2,7,4,"****")
D.
=REPLACE(B2,7,4,"****")
【单选题】Many questions also (arise) in the cloning of dinosaurs.
A.
平息
B.
（问题或困难）出现；由......引起；升起
C.
争论
【简答题】Language learning begins with listening. Children are greatlydifferent in the amount of listening they do before they start speaking, and later starters are often long listeners .Most children will “ ...
【简答题】Language learning begins with listening. Children are greatly different in the amount of listening they do before they start speaking, and later starters are often long listeners. Most children will “...
【单选题】They conferred on the best way to ___ business.
A.
extend
B.
adjust
C.
expand
D.
adopt
【简答题】More and more colleges and universities are offering courses via distance learning. Distance learning has many benefits, but there are also drawbacks, and not every learner will be suited to this mode...
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