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【简答题】
电路如图 所示,已知晶体管 b = 50 ,在下列情况下,用直流电压表测晶体管的集电极电位,应分别为多少?设 V CC = 12V ,晶体管饱和管压降 U CES = 0 .5V 。 ( 1 )正常情况 ( 2 ) R b1 短路 ( 3 ) R b1 开路 (4) R b 2 开路 (5) R C 短路
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举一反三
【单选题】( ) 3. What is inside Bruce's pocket?
A.
A pack of cigarettes.
B.
A flash light.
C.
A cigarette lighter.
【简答题】A．memory B．caches C．ports D．registers
【单选题】I hope _____. [ ]
A.
Bruce have a good stay in China
B.
Bruce will have a good stay in China
C.
Bruce to have a good stay in China
D.
Bruce having a good stay in China
【单选题】How long has Bruce Hardy been working for Althouse Bus Transportation?（ ）
A.
For 30 years.
B.
For70 years.
C.
Since last year.
D.
Since 2000.
【单选题】Which of the following statements is NOT true of Bruce Hardy?
A.
He is cool.
B.
He is a good friend
C.
He is impatient.
D.
He has driven 350,000 accident free miles.
【单选题】-Hello!May I speak to Bruce? -________.
A.
I’m Bruce
B.
Bruce is I
C.
This is Bruce here
【简答题】阅读理解。 Have you enjoyed the TV play called The Legend o f Bruce Lee? It's really educational and exciting. The play is about the whole life of Bruce Lee. Bruce Lee, the famous Chinese kung fu actor, w...
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