【简答题】计算如下图所示电路的静态工作点I CQ 、I CEQ 的值,并计算工作点上微变等效电路参数r π 、r ce 和g m 值。已知晶体管为硅管,β=60,厄尔利电压为-100V。
【多选题】Which of the following statements are true about Alexander Hamilton?
A.
He was one of the nation’s founding fathers.
B.
He was the nation’s first Secretary of Treasury.
C.
He led the Annapolis Convention of 1786.
D.
He wanted a weak national government.
【简答题】放大电路如图2.4.13所示,已知晶体管为硅管,β=50,输入信号电压vs=10mV,各电容容抗可以忽略不计。计算输入电阻Ri、输出电阻Ro、电压增益AV、源电压增益AVS和输出电压vo的值。
【单选题】Alexander Hamilton was the first Secretary of ( ) of America.
【单选题】清新海螺煤磨系统中,分离粗粉和细粉的旋风筒个数是()
【单选题】已知随机变量 ξ 的分布律如下表 ξ -1 0 1 P 0.4 0.4 0.2 则方差 D ξ为:( )
【判断题】Alexander Hamilton was the third presiden of the United States.
【判断题】The first Secretary of Treasury of the United States was Alexander Hamilton.
【判断题】The first Secretary of Treasury of the United States was Alexander Hamilton.