【判断题】【消耗次数：1】
类别随机抽样可分为固定比例抽样和按比例分类抽样。
①
正确
②
错误
参考答案：
复制
纠错
相关题目
【多选题】
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
【单选题】
分层随机抽样特征为（）。
①
层之间有异质性，层内部具有同质性；
②
层之间有同质性，层内部具有异质性；
③
层之间有同质性，层内部具有同质性；
④
层之间有异质性，层内部具有异质性。
【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】
I haven’t made any new friends yet and everybody here makes ____ of me.
①
fun
②
smile
③
laugh
④
joy
【单选题】
Im going to the supermarket this afternoon. Do you have anything ____?
①
to be buying
②
bought
③
for buying
④
to buy
【单选题】
Dont forget ____ the window before leaving the room.
①
to have closed
②
to close
③
having closed
④
closing
【单选题】
Having plenty of time, ____.
①
we needn’t to have hurried
②
there was no need for us to hurry
③
we didn’t need to hurry
④
hurrying was not necessary
【单选题】
Today, however, some new skyscrapers ____ up from the ground in long, wide, and curves.
①
arise
②
raise
③
rouse
④
rise
【单选题】
In order to ____ your goals, you must work hard.
①
make
②
achieve
③
require
④
develop
【单选题】
Waiter: ___Customer: No, thank you. I have already known what to order.
①
Do you like this kind of dishes?
②
You are welcome to our restaurant. Take seat, please.
③
Would you like to see a menu?
④
Everybody! Order, please!
【单选题】
When he came back after an absence of 20 years, he found his hometown completely ____. ?
①
changing ?
②
to be changed ?
③
to change ?
④
changed ?
【单选题】
We have studied English for only one year, ____ we can perform English short play already.?
①
for ?
②
and ?
③
yet ?
④
or?
【单选题】
With the old man ____ the way, we had no trouble in finding that mysterious cave.
①
leading
②
led
③
lead
④
to be led