在下图所示分压式偏置共发射极放大电路中, 已知 V CC =15V , R B1 =62kΩ , R B2 =20kΩ , R E =1.5kΩ , R C =3kΩ , R L =3kΩ , β =100 , r be =1.5 k Ω ,则电路的输入电阻 R i 和输出电阻 R o 分别为( )。
【单选题】Starting from long-run equilibrium, if the velocity of money increases (due to, for example, the invention of automatic teller machines), the Fed might be able to stabilize output by: