【单选题】【D5】 SPEAKER A: DO YOU KNOW BEIJING OPERA? SPEAKER B: OF COURS E. 【D5】______ SPEAKER A: CAN YOU INTRODUCE BEIJING OPERA TO ME? I WANT TO KNOW SOMETHING ABOUT IT. SPEAKER B: WELL, THE PLOT OF A BEIJING...
B.
WHY NOT GO WITH ME JUST TONIGHT?
C.
I WAS BORN IN BEIJIN G.
D.
I AM INTERESTED IN BEIJING OPERA.
【单选题】在三极管的三个电极中, C 表示的是三极管的( )极。
【单选题】在有三极管的电路中,用直流电压表测量NPN型三极管个电极对地电位是: , , , 则三极管的工作状态是 。
【单选题】三极管的( )是用来表示三极管的电流放大能力的参数