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【判断题】
The wide acceptance of UCP helps make the payment smoothly so as to promote international trade.A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】They are going to have the serviceman ________ an electric fan in the office tomorrow. A) install B) to install C) to be installed D) installed
【简答题】什么是光纤的色散？
【简答题】请简述什么是光纤的色散？
【简答题】什么是光纤的色散？对通信有何影响？多模光纤的色散由什么色散决定？单模光纤色散又有什么色散决定
【简答题】什么是光纤的色散?
【单选题】Victor took a bus and headed for home, _____ if his wife would have him back.
A.
not to know
B.
not known
C.
not knowing
D.
not having known
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