题目内容

F statistic can be used to test nonnested models.

A. 对
B. 错

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Predictions of a dependent variable are subject to sampling variation.

A. 对
B. 错

To make predictions of logarithmic dependent variables, they first have to be converted to their level forms.

A. 对
B. 错

硅二极管PN结的压降约为：

A. 0.7V
B. 0.3V
C. 0.5V
D. 0.8V

两个OC门的输出端直接相接，属于：

A. 与运算
B. 或运算
C. 出错，禁止直接相接
D. 视负载而定