Q22. In perfectly competitive constant-cost industries and perfectly competitive increasing-cost industries, respectively, what is the most likely long-run effect of a permanent increase in demand? Constant-cost industry Increasing-cost industry A, price decreases price decreases B. price decreases price remains unchanged C, price remains unchanged price decreases D. price remains unchanged price remains unchanged
答案和详解如下：
Q22. C Study Session4-18.f In the case of constant-cost industries, the long-run supply curve is perfectly elastic or horizontal Therefore, a permanent increase in demand would have no effect on the price in the long run. In the case of an increasing-cost industry, the long-run supply curve slopes upward and a permanent increase in demand would result in an increase in the price.
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发表于 2007-11-7 09:48
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