题目内容
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提问人:网友wei9773
发布时间:2022-01-07
[主观题]
混杂设计 confounded design
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A.age is dot confounded with any obvious variables
B.age is confounded with year of birth and year of test
C.age is confounded with intelligence
D.age is confounded with place of berth
A、改善环境质量 To improve the environment quality
B、改善经济收益 To improve economic profit
C、增加社会就业 To increase social employment
D、提高社会收益 To increase social benefits
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