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【单选题】
天猫里的知名商家不愿转换平台经营，而愿意支付平台费用这是因为()A.
成长时的边际成本
B.
同边网络效应
C.
现金流汇集的便利性
D.
多地栖息的可能性
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反馈参考答案：
举一反三
【简答题】客房部在酒店中的地位?
【单选题】All the crew _______ were killed in that heavy storm.
A.
board
B.
abroad
C.
on board
D.
on the board
【简答题】简述客房部在酒店中的地位和作用。
【单选题】It is reported that there was an air crash in Cuba. Nobody on board ______ it with all the passengers and the crew killed. [ ]
A.
avoided
B.
escaped
C.
missed
D.
survived
【简答题】The president promised to keep all the board members ________ of how the negotiations were going on. A) informed B) inform C) be informed D) informing
【单选题】The board of the company has decided to ______ its operation to include all aspects of the clothing business.
A.
extend
B.
enlarge
C.
expand
D.
amplify
【单选题】The pilot asked all the passengers on board to remain ______ as the plane was making a landing.
A.
seat
B.
seating
C.
seated
D.
to be seating
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