A price ceiling______.A、usually causes a shortage in a marketB、is a form of sel

游客2025-06-20 21

问题 A price ceiling______.

选项 A、usually causes a shortage in a market
B、is a form of self-regulation by a group of firms in a market
C、is set above the equilibrium price
D、usually results in the quantity supplied exceeding the quantity demanded

答案 A

解析答案为A项。price ceiling“最高限价”，是指当某种商品价格过高时，政府为了保护消费者利益，往往将市场交易价格定在市场均衡价格之下。例如，纽约市的租金控制就规定了房租的上限。最高限价属于政府调控手段，低于均衡价格(equilibrium price)，因此，引起商品供应量少于需求量，易造成商品短缺现象出现。本题中只有选项A项正确，故选A项。

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