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【多选题】
在图示电路中,已知晶体管的 , , ;静态时: , , 。 求(1)电压放大倍数 (2)输入电阻 (3)输出电阻A.
解:(1) (k Ω )
B.
解:(1) (k Ω )
C.
(2)输入电阻
D.
(3)输出电阻
E.
(2)输入电阻
F.
(3)输出电阻
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举一反三
【简答题】若 存在,则称f在
【简答题】agers are at risk from temptation because what stimulates their senses often (__) to their minds.
【单选题】What is the main message conveyed by the text?
A.
Many UK teenagers are at risk of food poisoning because they fail to take simple precautions.
B.
Food poisoning in the UK is on the rise.
C.
Washing hands is important.
D.
British schools need to improve their sanitation levels in order to reduce instances of food poisoning.
【简答题】We should make agers realize the risk and_________________ (consequent) of taking drugs by putting more safety education into textbooks.
【简答题】E agers who drink alcohol are at higher risk of becoming victims of violence, a Cardiff University study has found. A team from the School of Dentistry' s Violence Research Group studied drinking ...
【单选题】在产品图片上,后面的图片是作为产品放大的详细图使用的,为了在移动客户端也能够清晰展示出来,图片大小最好是?
A.
400px*400px
B.
800px*800px
C.
200px*200px
D.
600px*600px
【简答题】存在,称f在 存在,称f在
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