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【判断题】
用来估计总体参数取值范围的方法称为区间估计。()A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】By "a one-way street" (Line 1, Para. 1), the author means _______.
A.
university researchers know little about the commercial world
B.
there is little exchange between industry and academia
C.
few industrial scientists would quit to work in a university
D.
few university professors are willing to do industrial research
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