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在图3．4．2(a)所示的单调谐回路放大器中，工作频率为10 MHz，晶体管参数：｜yfe｜=58．3 mS，gie=1．2 ms，Cie=12 pF，goe=400μs，Coe=9．5 pF，回路电感L=1．4μH，接入系数p1=O．9，p2=O．3，空载品质因数Q0=100。假设yre=O，求： 1)谐振时的电压增益Av0； 2)谐振回路电容C之值； 3)通频带2△f0.7； 4)若R4=10 kΩ，试比较并联R4前后的通频带和增益。
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举一反三
【多选题】在长句 “ One great weakness of the Internet, though, is that it is difficult to know whether the information is true and accurate. ” 中 , 包含哪些从句?
A.
表语从句
B.
宾语从句
C.
状语从句
D.
主语从句
【简答题】京式面点的代表性品种有哪些?
【判断题】The interdependence of precision and accuracy: A replicate set of data with a wide spread, may still have a mean close to the true result and thus be accurate. However, this accuracy reflect good prec...
A.
正确
B.
错误
【判断题】The interdependence of precision and accuracy: A replicate set of data with a wide spread, may still have a mean close to the true result and thus be accurate. However, this accuracy reflect good prec...
A.
正确
B.
错误
【简答题】accurate and true ( )
【简答题】Write T for true and F for false statements. 1 In a TBL framework, the context is already established by the teacher and the students together so that the students can produce the accurate and fluent ...
【判断题】Read the passage and judge whether the following statements are true (T) or false (F). Research shows that children under the age of eight tend to accept advertising messages as truthful, accurate and...
A.
正确
B.
错误
【单选题】Which of the following statements is NOT true?
A.
One needs accurate information to have an e-mail delivered.
B.
The variety of eastern languages adds up to the difficulty in providing the right data to a computer.
C.
Chinese, Korean, Japanese, Arabic, and Thai all have its share in the problem.
D.
The purpose of the discussion is to cancel English on the Internet.
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