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只有当负载电阻RL和信号源的内阻Ie_____时，负载获得的功率最大，这种现象称为_____匹配_。
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逻辑函数F=A+B +C的对偶式为_____
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集成运放接成电压跟随器时，电路反馈形式应为()
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对于T触发器，若原态Qn=1，欲使新态Qn+1=1，应使输入T=（ ）
反相比例运算电路从反馈的角度去看，它属于_____负反馈电路。
正弦信号在电感和电容上消耗的平均功率等于_____W 。
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单相半波整流电路的输出电压平均值Uor av,是副边电源电压有效值U2的_____倍。
N沟道增强型场效应管在uas=0V时，漏极电流ip等于_____ A.
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