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【单选题】
教材P218,5.5.3题。图中BJT的β=100,Vbe=0.7V,Rsi=2kΩ。图同上题图 (6)两个输出端Vo1,Vo2对应的输出电阻Ro1、Ro2的大小比较。A.
Ro1、Ro2基本相等
B.
Ro1较大、Ro2较小
C.
Ro1较小、Ro2较大
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【简答题】A．It took a long time to finish the building. B．He was too busy to notice the opening of the hotel. C．He did not know the hotel had a restaurant. D．He would like to meet the woman for brunch next Sund...
【简答题】It took him a long time to explain, and I didn't get it all.
【单选题】It took us a long time to get there, _____ it was a long way to go.
A.
for
B.
and
C.
but
D.
or
【简答题】It took a long time to find the solution ____the problem.
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