单选题An operational amplifier, as used in todays consoles, has a calculated gain of 5This means that when the input changes （）A5 volts, the output changes 10 voltsB10 volts, the output changes 5 voltsC2 volts, the output changes 10 voltsD10 volts, the output changes 2 volts
单选题
An operational amplifier, as used in todays consoles, has a calculated gain of 5This means that when the input changes （）
A
5 volts, the output changes 10 volts
B
10 volts, the output changes 5 volts
C
2 volts, the output changes 10 volts
D
10 volts, the output changes 2 volts
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