题目内容

射极跟随器的主要特点是不能放大()

A. 电流
B. 电压
C. 电感
D. 电容

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射极跟随器又叫做晶体管共集基本放大电路

A. 对
B. 错

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Most teachers take great pride and satisfaction ___ their work, and enjoy working with young people.

A. with
B. in
C. about
D. for

People over the age of 85 make up the fastest-growing ___ of the elderly.

A. section
B. complication
C. completion
D. sanction

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