已知图( a )所示电路的幅频响应特性如图( b )所示。影响 f L 大小的因素是 ,影响 f H 大小的因素是 。 ( a .晶体管极间电容, b . 耦合电容C)
A.
a,a
B.
a,b
C.
b,b
D.
b,a
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