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【单选题】
多级放大电路的放大倍数为各级放大电路放大倍数的( )。A.
和
B.
积
C.
对数和
D.
对数积
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
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皮皮学刷刷变学霸
举一反三
【单选题】A pair of night birds circled above, the ______ of their wings and their weird screams penetrating the thickening mist.
A.
slapping
B.
clapping
C.
flapping
D.
flipping
【简答题】A．wholesome B．feasible C．native D．weird
【单选题】急救医疗服务体系英文名称是
A.
emergency medicine
B.
emergency medical service system
C.
department of emergency
D.
nursing in emergency
E.
prehospital emergency medicine care
【单选题】急救医疗服务体系英文名称是
A.
emergency medicine
B.
emergency medical service system
C.
department of emergency
D.
nursing in energency
E.
prehospital emergency medicine care
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