A.动物的消化能力
B.环境温度
C.饲料原料种类
D.动物的种类
第4题
A、the common-mode gain of an op-amp increases when it is used in an inverting amplifier
B、the value of differential gain for an inverting amplifier is lower than that of its op-amp
C、slew-rate limiting decreases the common-mode gain of the op-amp
D、of the lower input impedance of the inverting amplifier
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