题目内容

放大器级间耦合方式有三种耦合；耦合；耦合；在集成电路中通常采用直接耦合。

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在功率放大电路中．甲类放大电路是指放大管的导通角等于，乙类放大电路是指放大管的导通角等于，甲乙类放大电路是指放大管的导通角为。

在甲类，乙类和甲乙类三种功率放大电路中，效率最低的是，失真最小的是。效率最高的是。

在乙类互补对称功率放大器中．因晶体管输入特性的非线性而引起的失真叫做。

directionstransportationcommutepollutiondowntownfavortrafficintersection1.Sorry,I'm going to be late.The______is really bad today.It must be rush hour.2.I want to go_and do some shopping.All the best shops are there.3.Emily will meet me at the of Oak and Elm Street.4.Could you please give me_to Hyde Park? I'm lost.5.Jenny always uses public _.She doesn't know how to drive.6.Can I ask a(n) ?I need help moving house.7.It takes two hours for Kevin to _here every day.No wonder he is often late.8.One thing Idon't like about the big city is the dirty.The _______is terrible.