25. 如下圖所示多級極放大電路，

(A)Ri = 100kΩ，Ro = 4kΩ
(B)Ri = 100kΩ，Ro = 1kΩ
(C)Ri = 17kΩ，Ro = 4kΩ
(D)Ri = 20kΩ，Ro = 1kΩ

答案：登入後查看
統計： A(0), B(0), C(1), D(0), E(0) #2926712