問題詳情
13. 某放大器之電壓增益為 100 時，若以 dB 值計算，應為多少？
(A)-20dB
(B)20dB
(C)-40dB
(D)40dB。
(A)-20dB
(B)20dB
(C)-40dB
(D)40dB。
參考答案
無參考答案
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