【判断题】【消耗次数：1】
三极管放大电路共有三种组态分别是共射极、共集电极和共基极放大电路。
①
正确
②
错误
参考答案：
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相关题目
【单选题】
当基极电流IB较大时，集－射极电压UCE接近0，集电极电流IC达到最大值，此时三极管处在（ ）状态；当基极电流IB≤0时，集电极电流IC＝0，集－射极间电压UCE＝UCC，此时三极管处在（ ）状态。
①
饱和，放大
②
放大，截止
③
截止，放大
④
饱和，截止
【单选题】
下列是三极管各个极的电位，处于放大状态的三极管为
①
VB=0.7V VE=0V VC=0.3V
②
VB=-6.7V VE=-7.4V VC=-4V
③
VB=-3V VE=0V VC=6V
随机题目
【单选题】
10. The coffee is very weak. I like it a bit ______.
①
strong
②
heavier
③
stronger
④
heavy
【单选题】
24.Don’t worry about Susan. She hasn’t been _____________ she pretends.
①
as lucky as
②
as unlucky as
【单选题】
4.After a delay of two hours, it was finally announced that the passengers could now _______ the plane.
①
get for
②
get up
③
go to
④
board
【单选题】
26.The meeting was put off because we ________ a meeting without John.
①
objected having
②
were objected to having
③
objected to have
④
objected to having
【单选题】
2. The cause of ______ disease is the economic and educational backwardness of the country.
①
long
②
infectious
③
bad
④
boring
【单选题】
28. Sally contributed a lot to the project, but she never once accepted all the ________ for herself.
①
credit
②
attention
③
focus
④
award
【单选题】
11.You hardly phone me. Why don’t you phone me _______.
①
often
②
. more often
③
always
④
more always
【单选题】
1. Drug testing at work and in school has almost become _______ in many American cities.
①
routine
②
infectious
③
terrific
④
valuable
【单选题】
13.The children have left. It’s getting _______ now.
①
quiet
②
quieter
③
more quiet
④
. calmer
【单选题】
7.He______ her on her new dress without looking at it.
①
praised
②
B. enjoyed
③
complimented
④
cared