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【简答题】
D/P at 30 days after sight与D/A at 30 days after sight两者有何区别?
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举一反三
【单选题】( )是线缆对通过信号的阻碍能力,受直流电阻、电容和电感的影响,要求在整条 电缆中必须保持是一个常数。
A.
串扰
B.
衰减
C.
回波阻抗
D.
特性阻抗
【单选题】The new student was very slow to __________ the unusual rules of the school.
A.
adapt for
B.
adapting for
C.
adapt to
D.
adapting to
【简答题】He first welcomed the new student and then explained college regulations. (go on)5.He first welcomed the new student and then explained college regulations. (go on)
【单选题】How old is the new student?
A.
Seventy.
B.
Seventy-eight.
C.
Eighty.
D.
Eighty-seven.
【单选题】The teacher didn't like ______composition written by the new student because it didn't make _______ sense.
A.
the;a
B.
the;/
C.
a; t he
D.
a;/
【简答题】3÷4= () 4 =12÷______=______:20.
【判断题】图解法可以用来分析三极管放大电路的非线性失真问题,而微变等效电路法却不能。
A.
正确
B.
错误
【单选题】是线缆对通过信号的阻碍能力,受直流电阻、电容和电感的影响,要求在整条电缆中必须保持是一个常数。 ( )
A.
串扰
B.
衰减
C.
回波损耗
D.
特性阻抗
【简答题】He first welcomed the new student and then explained college regulations. (go on)
【简答题】230×30______320×20.
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