答案和详解如下： Q7. A regulatory commission that seeks to have regulated companies set prices at a level that provides a reasonable profit to the companies is utilizing which of the following methods of regulation? A) Cost-of-service regulation. B) Social regulation. C) Rate-of-return regulation. Correct answer is C) Rate-of-return regulation seeks to allow industry participants to receive what regulators determine is a normal or fair return on their investment. Q8. In general, the regulatory body of an industry with a natural monopoly will attempt to set industry prices at which point on the supply/demand curve? A) Marginal revenue = average cost. B) Marginal revenue = marginal cost. C) Average cost = demand. Correct answer is C) At the point where average cost equals demand, producers would maintain profitability and consumers would pay a price somewhat lower than in an unregulated market. Q9. When a firm operates with the lowest cost per unit and the capacity to produce all of the industry’s output, this economic structure is best described as: A) an oligopoly. B) a competitive monopoly. C) a natural monopoly. Correct answer is C) A natural monopoly is characterized by a single dominant firm within the industry that is the lowest cost producer and has sufficient capacity to meet demand. | 
发表于 2009-1-7 15:12
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