测得某PNP型晶体管三个极的电位分别为VC＝0.4V、VB＝1.5V、VE＝1.2V

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问题单项选择题

测得某PNP型晶体管三个极的电位分别为VC＝0.4V、VB＝1.5V、VE＝1.2V，可判断该管工作于（）状态。

A．截止

B．饱和导通

C．线性放大

D．非线性放大

答案

参考答案：A

选择题

— There is still a copy of the book in the library. Will you go and borrow __________?— No, I’d rather buy __________ in the bookstore.

A．it; one

B．one; one

C．one; it

D．

单项选择题

A．She is trying to persuade the man to attend the rock-climbing class.

B．She is trying to tell the man many students are interested in it.

C．She is trying to tell him the college doesn’t have any rock-climbing equipment.

D．She is trying to tell him there are no appropriate places for rock-climbing nearby.