举一反三
内容
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税后投资收益率（after tax rate of return to investment）
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投资的实际收益率（real rate of return from investment）
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中国大学MOOC: When considering the timeframe of an investment, a rule followed by some is to choose the investment with _________ payback period.考虑一项投资的时限时，应遵循的规则是选择具有_________投资回收期的投资。
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When considering the timeframe of an investment, a rule followed by some is to choose the investment with _________ payback period.考虑一项投资的时限时，应遵循的规则是选择具有_________投资回收期的投资。 A: no (无) B: the longest (最长) C: the shortest (最短) D: an infinite (无限)
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In which of the following situations must national saving rise? A: domestic investment increases and net foreign investment decreases. B: domestic investment decreases and net foreign investment increases. C: both domestic investment and net foreign investment increase. D: net exports decrease and domestic investment is unchanged.