题目内容
在确定某项目的基准收益率时,经测算:资金成本，机会成本，投资风险，通货膨胀依次为8%，10%，3%，6%,则该项目的基准收益率可近似为()。
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某项固定资产原值为80000元,无残值,折旧年限为5年,若用双倍余额递减法计提折旧,则第4年应提折旧额为()。
在价值工程活动中,价值指数VI的计算结果不同,采取的改进策略也不同。下列关于改进策略的说法正确的是()。
价值工程中的功能一般是指产品()。
As a medium of exchange, money permits the separation of exchange into the two distinct acts of buying and selling, without requiring the seller to purchase goods from the person who buys his products, or vice versa. Hence products who know they will be paid in money, can concentrate on finding the most suitable outlet for their goods, while buyers who will pay in money, can concentrate on finding the cheapest market for the things they wish to purchase. Specialization, which is vital to an advanced economy, is encouraged, because people whose output is not a complete product but only a part of One in which many others are involved can be paid an amount equivalent to their share of the product.
Another advantage of money is that it is a measure of value--that is, it serves as a unit in terms of which the relative values of different products can be expressed. In a barter economy it would be necessary to determine how many plates were worth one hundred weight of cotton, or how many pens should be exchanged for a ton of coal, which would be a difficult and time-consuming task. The process of establishing relative values would have to be undertaken for every act of exchange, according to what products were being offered against one another, and according to the two parties' desires and preferences. If I am trying to barter fish for bananas, for example, a lot would depend on whether the person willing to exchange bananas is or is not keen on fish. Thirdly, money acts as a store of wealth. It is difficult to imagine saving under a barter system. No one engaged in only one stage in the manufacture of product could save part of his output, since he would be producing nothing complete. Even when a person actually produced a complete product the difficulties would be overwhelming. Most products deteriorate fairly rapidly, either physically or in value, as a result of long storage; even if storage were possible, the practice of storing products for years on end would involve obvious disadvantages--imagine a coal-miner attempting to save enough coal, which of course is his product, to keep him for life. If wealth could not be saved, or only with great difficulty, future needs could not be provided for, or capital accumulated to raise productivity.
Using money as a medium of exchange means that _________.
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