假设一个厂商在完全竞争的产品和要素市场上从事生产经营。其生产函数为Q=48 L 0.5 K 0.5 ,其中
A.提高工资率 B.增加雇佣的劳动量 C.降低工资率 D.减少雇佣的劳动量
a.在没有对外贸易时,美国和欧洲汽车市场上均衡的厂商数量是多少?
b.在没有对外贸易时,美国和欧洲汽车市场上均衡的价格是多少?
c.现在假设美欧之间进行自由贸易,美国市场上除了原有的3亿人口外,将增加5.33亿人口。在美国和欧洲汽车市场上将有多少汽车厂商?汽车新的均衡价格是多少?
d.美国市场上汽车的价格在b和c中为何不同?自由贸易改善了消费者的福利吗?是怎样改善的?
Suppose that fixed costs for a firm in the automobile industry (start- up costs of factories, capital equipment, and so on) are $5 billion and that variable costs are equal to $17,000 per finished automobile. Because more firms increase competition in the market, the market price falls as more firms enter an automobile market, or specifically, where n represents the number of firms in a market. Assume that the initial size of the U.S. and the European automobile markets are 300 million and 533 million people, respectively.
a.Calculate the equilibrium number of firms in the U.S. and European automobile markets without trade.
b.What is the equilibrium price of automobiles in the United States and Europe if the automobile industry is closed to foreign trade?
c.Now suppose that the United States decides on free trade in automobiles with Europe. The trade agreement with the Europeans adds 533 million consumers to the automobile market, in addition to the 300 million in the United States. How many automobile firms will there be in the United States and in Europe combined? What will be the new equilibrium price of automobiles?
d.Why are prices in the United States different in (c) than in (b) ? Are consumers better off with free trade? In what ways?
下表显示了一个以常数边际成本10美元生产的垄断者面临的需求曲线。
(1)计算该厂商的边际收益曲线。
(2)该厂商的利润最大化产量和价格是多少?该厂商的利润为多少?
(3)在一竞争性行业中均衡价格和数量各为多少?
(4)如果该垄断者被迫以完全竞争的均衡价格生产,社会得益是什么?结果是谁获益谁受损?
The following table shows the demand curve facing a monopolist who produces at a constant marginal cost of $ 10.
a. Calculate the firm' s marginal revenue curve.
b. What are the firm's profit - maximizing output and price? What is its profit?
c. What would the equilibrium price and quantity be in a competitive industry?
d. What would the social gain be if this monopolist were forced to produce and price at the competitive equilibrium? Who would gain and lose as a result?
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E_mail营销是指在用户事先许可的前提下,通过电子邮件的方式向目标用户传递有价值信息的一种网络营销手段。E_mail营销有三个基本要素:基于用户许可、通过电子邮件传递信息、信息对用户是有价值的。三个要素缺少一个,都不能称之为有效的E_mail营销。
根据上述定义,下列属于有效的E_mail营销的一项是:
A.小王2002年成为某品牌产品的会员,该产品定期给他用电子邮件发送电子刊物,入会期满一年后,小王决定退会,但他在网上进行退会操作没有成功,该产品还继续发来信息
B.小李在某门户网站注册了免费邮箱,注册时注明愿意接收有关医疗保健和体育比赛方面的信息。使用邮箱后,该网站经常向他的邮箱发送包括医疗保健和商品折扣方面的信息
C.小赵曾经给某厂商留下地址,希望对方免费邮寄相关资料,后来他收到一封电子邮件,没有发件人姓名、地址、身份,标题是“产品目录”。他恐怕该邮件有病毒,没有打开就将其删除了
D.小高收到一封邮件,标题为:“免费赠卡,直接消费”,打开后,发现收件人一栏只有一个地址,但却不是自己的邮箱地址,他感到大惑不解
A.小王2002年成为某品牌产品的会员,该产品定期给他用电子邮件发送电子刊物,入会期满一年后,小王决定退会,但他在网上进行退会操作没有成功,该产品还继续发来信息
B.小李在某门户网站注册了免费邮箱,注册时注明愿意接收有关医疗保健和体育比赛方面的信息,使用邮箱后,该网站经常向他的邮箱发送包括医疗保健和商品折扣方面的信息
C.小赵曾经给某厂商留下地址,希望对方免费邮寄相关资料,后来他收到一封电子邮件,没有发件人姓名、地址、身份,标题是“产品目录”。他恐怕该邮件有病毒,没有打开就将其删除了
D.小高收到一封邮件,标题为:“免费赠卡,直接消费”,打开后,发现收件人一栏只有一个地址,但却不是自己的邮箱地址,他感到大惑不解
A.市场上厂商的数量
B.产品的差别程度
C.单个厂商对市场价格的控制程度
D.厂商进入、退出市场的难易程度
E.市场上产品的数量