【正文】 正確答案： A) is $100. 問題 18 得 5 分，滿分 5 分 The Acme Company is a perfect petitor in its input markets and a monopolist in its output market. Its average product of labor is 30, the marginal product of labor is 20, the price of labor is $20, and the price of the output is $5. For Acme Company, the marginal revenue product of labor 正確答案： E) cannot be determined with the information provided. 問題 19 得 5 分，滿分 5 分 The Acme Company is a perfect petitor in its input markets and a monopolist in its output market. The marginal product of labor is 20 and the price of Acme39。s output is $10. For Acme Company, the marginal revenue product of labor is 正確答案： D) less than $200. 問題 20 得 5 分，滿分 5 分 The Acme Company is a perfect petitor in its input markets and its output market. Its average product of labor is at its maximum and equals 30. The marginal revenue product of labor is $300. The price of its output 正確答案： B) is $10. Chapter 16 Chapter 17 問題 13 5 分 保存 When firms participate in group health insurance for all employees, it A) raises rates for everyone, because it brings unhealthy people into the pool. B) raises rates for unhealthy people. C) may lower rates for all people to the extent that it keeps healthy people in the pool. D) prevents unhealthy people from selecting out, to the detriment of healthy people. E) increases the amount of information available to insurers about the population. 問題 16 5 分 保存 In the arena of asymmetric information, standardization (for example, menus at McDonald39。s restaurants) is a substitute for A) quality. B) government regulation. C) reputation of individual sellers. D) firms39。 distinguishing among buyers. E) firms39。 segregation of buyers. 問題 19 5 分 保存 How do online auction sites like Ebay attempt to overe the asymmetric information problems associated with goods that the buyer cannot personally inspect before purchase A) The online auction firm only allows highquality merchandise to be sold at their site. B) The previous performance (reputations) of the buyer and seller are posted for public review. C) Buyers can take receipt of any goods before they have to pay the seller. D) all of the above Chapter 18 問題 2 5 分 保存 Constructing plastic containers produces air pollutants. Therefore, in the market for plastic containers, A) the marginal social cost curve is above and to the right of the demand curve. B) the marginal social cost curve is below and to the left of the demand curve. C) the marginal social cost curve is above and to the left of the supply curve. D) the marginal social cost curve is below and to the right of the supply curve. E) there is a gap between quantity supplied and quantity demanded in equilibrium. 問題 3 5 分 保存 Dry cleaning of clothing produces air pollutants. Therefore, in the market for dry cleaning services, the equilibrium price A) and output are too low to be optimal. B) and output are too high to be optimal. C) is too low to be optimal, and equilibrium quantity is too high. D) is too high to be optimal, and equilibrium quantity is too low. E) is optimal, but there is an excess supply. 問題 5 5 分 保存 Because trucking as an industry involves the generation of pollutants in engine exhaust, A) the supply curve of trucking services overstates the true cost of providing those services. B) the supply curve of trucking services understates the true cost of providing those services. C) the demand curve for trucking services overstates the true benefit of providing those services. D) the demand curve for trucking services understates the true benefit of providing those services. E) the market for trucking services will always be away from equilibrium by an amount equal to the value of the externality. 問題 6 5 分 保存 Because air cargo as an industry involves the generation of pollutants in engine exhaust, the equilibrium price of air cargo services A) is above the optimal level, and quantity is below the optimal level. B) is below the optimal level, and quantity is above the optimal level. C) and quantity of trucking services are both above the optimal level. D) and quantity of trucking services are both below the optimal level. E) must fall in order for the market to reach equilibrium. 問題 9 5 分 保存 The marginal benefit and marginal private cost curves for aphrodisiacs are given as follows: MB = 200 Q MPC = Q In addition to private costs, there is a marginal external cost of $10 per unit of output. What is the efficient level of output? A) 0 B) 55 C) 95 D) 100 E) none of the above 問題 11 5 分 保存 Because of the kind of externalities that tend to be generated from general Ramp。D resources bought by firms, the equilibrium price of Ramp。D A) is above the optimal level, and quantity is below the optimal level. B) is below the optimal level, and quantity is above the optimal level. C) and quantity of Ramp。D are both above the optimal level. D) and quantity of Ramp。D are both below the optimal level. E) must fall in order for the market to reach equilibrium. 問題 12 5 分 保存 Due to externalities generated by home landscaping, its price A) is above the optimal leve