【多选题】【消耗次数：1】
简单随机抽样
①
试用于总体各单位呈均匀分布的总体
②
适用于总体各单位标志变异较大的总体
③
在抽样之前要求对总体各单位加以编号
④
最符合随机原则
⑤
是各种抽样组织形式中最基本最简单的一种形式
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相关题目
【单选题】
（ ）是最基本的随机抽样方法，它在抽样之前，对总体单位不进行任何分组、排列等处理，完全按随机原则从总体中抽取样本。
①
随机抽样
②
重点抽样
③
类型随机抽样
④
单纯随机抽样
随机题目
【单选题】
Could you make an appointment with Doctor Wilson for me?____________
①
I cannot do it for you.
②
Im afraid all the appointments are filled.
③
You can have it.
④
Can I help you?
【单选题】
This box is too heavy for me to carry upstairs.__________
①
You may ask for help.
②
Let me give you a hand.
③
Please do me a favor.
④
I’d come to help
【单选题】
He cannot be tired _______ he has walked only half a mile.
①
since
②
whether
③
when
④
as long as
【单选题】
The idea of winning the eyes of the people around ____ powerfully to some youngsters, so they are eagerly identifying themselves.
①
defy
②
expel
③
attract
④
appeals
【单选题】
The top of the Great Wall is _______ for five horses to go side by side.
①
wide
②
wide enough
③
enough wide
④
so wide
【单选题】
Charles regretted ______ the TV set last year. The price has now come down.
①
buying
②
to buy
③
of
④
from
【单选题】
I didn’t mean to do that. Please forgive me.____________
①
Not too bad.
②
Never mind.
③
It’s a pleasure.
④
Thank you.
【单选题】
No sooner _______ than they began to work.
①
they had arrived
②
they would arrive
③
had they arrived
④
would they arrive
【单选题】
Louis was asked to ___ the man who stole her purse.
①
confirm
②
recognize
③
claim
④
identify
【单选题】
For thousands of years man dreamed （） seemed impossible dreams about flying.
①
what
②
that
③
which
④
why