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【简答题】
设放大电路的输入端接入了一个中频正弦交流信号,用示波器观察其输出电压与输入电压的波形。如果这个放大电路是共发射极电路,则二者应该( )[同相,反相];如果这个放大电路是共集电极电路,则二者应该( )[同相,反相];如果这个放大电路是共基极电路,则二者应该( )[同相,反相]。
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反馈参考答案：
举一反三
【单选题】Which of the following works is NOT created by Qu Yuan?
A.
Asking Questions to the Heaven
B.
Embracing the Sand
C.
The Everlasting Regret
D.
The Lament
【单选题】Which of the following kinds of Rocking ham ware were probably produced in the greatest quantity?
A.
Picture frames
B.
Dishes and bowls
C.
Curtain tiebacks
D.
Doorknobs
【单选题】Which of the following statements would the writer agree with the most?
A.
The nature and quality of subjects are more important than marks on them.
B.
Teachers should force students to learn to read and write and calculate well.
C.
Good preparation for standard tests is necessary for students.
D.
Most students are clear about how to acquire basic skills.
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