单项选择题

U.S. dollars are an example of commodity money and hides used to make trades are an example of fiat money.
A、正确
B、错误

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判断题

系统经过一个循环过程，过程的热和功都一定是0。正确错误

多项选择题

It’s not surprising, then, that business decisions are arrived ________ in a different way from in the West. Westerners often expect an Asian to make a quick decision or to treat a current ________ on its present merits, irrespective of what has happened in the past. A、at B、on C、deal D、decision

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