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【单选题】
—Who did it? — .you ask?It was Joe,of course.A.
May
B.
Must
C.
Should
D.
Need
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举一反三
【简答题】说明光纤传输的原理。
【单选题】— Wow, isn't this handsome device the most popular iPad 2? Can I have a look at it? — _______. [ ]
A.
No, you can't
B.
Sorry, it is expensive
C.
Yes, go ahead
D.
Of course, it looks good
【单选题】----Wow, isn’t this handsome device the most popular iphone5? Can I have a look at it? ----___________.
A.
No, you can’t
B.
Sorry, it’s expensive
C.
Sure, it looks good
D.
Yes, go ahead
【简答题】光纤的传输原理:在发送端先将 信号通过 转换为 信号。在接收端使用 将 信号转换成 信号。
【单选题】--Wow, isn’t this handsome device the most popular iphone5? Can I have a look at it? --______.
A.
No, you can’t
B.
Sorry, it’s expensive
C.
Of course, it looks good
D.
Yes, go ahead
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