[单选]假设政府对笔记本电脑设置了最高限价。以下哪个事件可以将价格上限从非限制性的变成限制性的?
A. 生产技术的改进降低了生产笔记本电脑的成本。
B. 销售笔记本电脑的公司数量减少。
C. 消费者收入减少,笔记本电脑是正常商品。
D. 购买笔记本电脑的消费者数量减少。
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[单选]过剩在( )情况下发生
A. 对市场强加非限制性价格下限。
B. 非限制性价格下限从市场中移除。
C. 对市场施加限制性价格下限。
D. 限制性价格下限从市场中移除。
[单选]A government-imposed price of $6 in this market is an example of a
A. binding price ceiling that creates a shortage.
B. non-binding price ceiling that creates a shortage.
C. binding price floor that creates a surplus.
D. non-binding price floor that creates a surplus.
[单选]Suppose the government has imposed a price floor on cellular phones. Which of the following events could transform the price floor from one that is binding to one that is not binding?
A. Cellular phones become less popular.
B. Traditional land line phones become more expensive.
C. The components used to produce cellular phones become less expensive.
D. Firms expect the price of cellular phones to fall in the future.
[单选]Which of the following is correct?
A. Rent control and the minimum wage are both examples of price ceilings.
B. Rent control is an example of a price ceiling, and the minimum wage is an example of a price floor.
C. Rent control is an example of a price floor, and the minimum wage is an example of a price ceiling.
D. Rent control and the minimum wage are both examples of price floors.
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