答案和详解如下： 6.All of the following are barriers to entry EXCEPT: A) price controls. B) resource controls. C) patents. D) economies of scale. The correct answer was A) Often barriers to entry are government licensing and legal barriers. 7.Which of the following situations is least likely to lead to high barriers to entry and monopoly supply? A) Natural resources are spread among many firms. B) Governmental licensing and regulations are present. C) Economies of scale are present. D) Patents or exclusive production rights are granted. The correct answer was A) All cases except wide distribution of a natural resource facilitate a monopoly. If natural resource ownership is concentrated in one firm a monopoly would result. 8.Which one of the following is most likely to contribute to the presence of monopoly in an industry? A) Legal barriers to entry into the industry. B) Diseconomies of scale. C) An elastic market demand for the product produced by the industry. D) Inefficiency attributable to bureaucratic decision-making procedures in the industry. The correct answer was A) An example of an industry with legal barriers is utility firms, which are granted exclusive rights to supply electricity in certain areas. | 
发表于 2008-4-17 10:17
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