An amplifier has a midband power gain of 24，500.What is the value of the power gain in dB for the circuit？（）
A.87.78 dB
B.43.9 dB
C.4.39 dB
正確答案：43.9 dB
題目：An amplifier has a midband power gain of 24，500.What is the value of the power gain in dB for the circuit？（）
關鍵字：智慧樹
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