【名词&注释】
频率稳定度(frequency stability)、正弦波振荡器(sinusoidal oscillator)、输入电阻(input resistance)、输出电阻(output resistance)、RC振荡电路(rc resonator)、电流串联负反馈(series electric circuit negative feedba ...)、电流并联负反馈(current-shunt negative feedback)、电压串联负反馈(voltage series connection negative feed ...)、晶体振荡电路、电压并联负反馈(negative feedback of voltage parallel)
[单选题]放大器中,能使放大器输出电阻、输入电阻均减小的反馈是()
A. A、电压并联负反馈(negative feedback of voltage parallel)
B. B、电压串联负反馈(voltage series connection negative feed)
C. C、电流并联负反馈(current-shunt negative feedback)
D. D、电流串联负反馈