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【判断题】
任何一个线性有源二端网络都可以用一个电压为UOC的理想电压源和一个电阻 R0串联的等效电路来代替。A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】画出下列二次函数图象,说出它们的性质: (1) y =-5 x 2 ; (2) y = -( x +2) 2 – 1 ;
【简答题】Jack prefers reading books to (listen) ______ to the music.
【单选题】下面关于 for 循环语句说法正确的是( )。 int i,k; for(i=0,k=-1;k=1;i++,k++) printf( " *** " );
A.
判断循环结束的条件非法
B.
是无限循环
C.
只循环一次
D.
一次也不循环
【简答题】It was reading his books that promoted me to write to him．
【单选题】We had a great time in the reading room yesterday afternoon. [ ]
A.
read books
B.
reading books
C.
to read books
D.
readed books
【单选题】What is split horizon?
A.
Information about a route should not be sent back in direction from which the original update came
B.
It splits the traffic when you have a large bus(horizon) physical network
C.
It holds the regular updates form broadcasting to a downed link
D.
It prs regular up messages from reinstating a route that hs gone down
【简答题】氨基酸分解代谢的主要途径为( )其方式有( )、( )( )( )四种。
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