【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.
【多选题】(多选)关于异烟肼的特殊杂质检查,下列叙述正确的是( )
E.
仅需要对原料药进行检查,注射剂一般不进行特殊杂质检查
【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。
【多选题】使用托收承付的收款单位和付款单位,必须是( )
D.
经营较好经开户银行审核同意的城乡集体所有制工业企业
【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.