题目内容

所谓晶体管输出特性曲线中的线性区域是指（）。

A. 放大区
B. 饱和区
C. 截止区

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晶体管工作在截止状态时，其发射结反偏，集电结正偏。

A. 对
B. 错

晶体管工作在饱和状态时，其发射结和集电结均正偏。

A. 对
B. 错

Multiple-choice: For each sentence there are four choices marked A, B, C, and D. Choose the one that best completes the sentence.Please let us know which of our products _______.

A. you are interested
B. are you interested
C. they are interested
D. you are interested in

We are now enclosing a pricelist for all the items you _______ in your letter under reply.

A. required
B. inquired about
C. said
D. informed