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【单选题】
经过点(3,-2)的双曲线 y= k x 一定还经过点(  )
A.
(-1,5)
B.
(2,-4)
C.
(2,-3)
D.
(2、3)
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A.
25MHz
B.
35MHz
C.
45MHz
D.
75MHz
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A.
略有上升
B.
下降一半
C.
上升一半
D.
明显下降,不足一半
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A.
正确
B.
错误
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A.
正确
B.
错误
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A.
Some people regret their choices of love partners.
B.
In some partnership or relationship, he or she tries to control the other.
C.
Through psychological adjustment and therapy, one will feel satisfied with love.
D.
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【单选题】Which of the following is NOT true according to the passage?
A.
Some people regret their choices of love partners.
B.
In some partnership or relationship, be or she tries to control the other
C.
Through psychological adjustment and therapy, one will feel satisfied with love.
D.
Partnership is a school from which it is not easy for us to graduate.
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【单选题】单相桥式整流电容滤波电路中,若整流桥中一只二极管极性接反,则:
A.
电源被短路
B.
负载得到脉动全波电压
C.
电路相当于单相半波整流电路
D.
输出电压等于
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