题目内容

设A为3元集合，B为4元集合，则A到B的二元关系有（）个。

A. 13
B. 15
C. 12
D. 14

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a与b被m除后余数相同的等价关系式是（）。

A. a-b是m的整数倍
B. a是b的m倍
C. a*b是m的整数倍
D. a+b是m的整数倍

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更加贴近现实,但精确性、信度效度有所减弱的实验设计是()。

A.被试内设计
B.被试间设计
C.准实验设计
D.非实验设计

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被试间设计可能会因为练习效应而产生结果偏差。

A. 对
B. 错

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Cet-6-1.17-Exercise 01Yet there are doubts whether people watching television, a “lean back” medium, crave interaction. Click-through rates have been high so far (around 3–4%, compared with less than 0.3% online), but that may be a result of the novelty. Interactive ads and viewers might not go well together. How does the author view the hitherto high click-through rates?

A. They point to the growing curiosity of TV viewers.
B. They may be due to the novel way of advertising.
C. They had no chance to touch them when shopping online.
D. They had to tighten their belts.

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设A为3元集合，B为4元集合，则A到B的二元关系有（）个。

A. 13 B. 15 C. 12 D. 14

a与b被m除后余数相同的等价关系式是（）。

更加贴近现实,但精确性、信度效度有所减弱的实验设计是()。

被试间设计可能会因为练习效应而产生结果偏差。

A. 13
B. 15
C. 12
D. 14