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【单选题】
Assume for the United States that the opportunity cost of each airplane is 100 cars. Which of these pairs of points could be on the United States' production possibilities frontier?A.
(200 airplanes, 5,000 cars) and (150 airplanes, 4,000 cars)
B.
(200 airplanes, 10,000 cars) and (150 airplanes, 20,000 cars)
C.
(300 airplanes, 15,000 cars) and (200 airplanes, 25,000 cars)
D.
(300 airplanes, 25,000 cars) and (200 airplanes, 40,000 cars)
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【单选题】Through social networking, you can ______.
A.
make friends, business connections or find an appointment
B.
find some useful information about our society
C.
ask someone to help you finish your own business
D.
get private information about your friends
【简答题】助燃风机的任务是把燃料燃烧所需的__________送入炉堂。
【单选题】某企业在季节性经营低谷时，除了自发性流动负债外不再借用短期借款，则该企业采用的营运资本筹资政策属于( )。
A.
配合型或激进型筹资政策
B.
激进型筹资政策
C.
保守型筹资政策
D.
配合型或保守型筹资政策
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