抽样的基本要求是要保证所抽取的样品单位对全部样品具有充分的（_爱下问搜题

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问题单项选择题

抽样的基本要求是要保证所抽取的样品单位对全部样品具有充分的（）。

A.代表性

B.全面性

C.可替代性

D.可检验性

答案

参考答案：A

补全对话，情景问答

读一读下列问题，从方框中选择正确的答句。

( ) 1. What can you do?
( ) 2. Who's the young man?
( ) 3. Where is the sofa?
( ) 4. What do you do on weekends?
( ) 5. Is there a mountain near the village?
( ) 6. What would you like for lunch?
( ) 7. Are you helpful at home?
( ) 8. Would you like some tomatoes?

A. I'd like some potatoes and green beans.
B. I can empty the trash.
C. Sure.
D. It's in the living room.
E. I often do homework and watch TV.
F. Yes, it's healthy.
G. He's our new math teacher.
H. Yes, there is.

单项选择题

下列所示踏步尺寸，最有可能是幼儿园建筑踏步尺寸的是（）。

A.b=300mm，h=150mm

B.b=320mm，h=140mm

C.b=280mm，h=130mm

D.b=290mm，h=160mm