单选题Operational amplifiers, used primarily in analog circuits, are characterized by（）Ahigh input impedance, high gain and low output impedanceBhigh input impedance, high gain and high output impedanceClow input impedance, low gain and high output impedanceDlow input impedance, high gain and low output impedance
单选题
Operational amplifiers, used primarily in analog circuits, are characterized by（）
A
high input impedance, high gain and low output impedance
B
high input impedance, high gain and high output impedance
C
low input impedance, low gain and high output impedance
D
low input impedance, high gain and low output impedance
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