产业经济学（双语）答案2023秋

第十二章测试

1.Product differentiation is associated with possible advantages for incumbent firms. These advantages include ( ):
A:increased economies of scale B:all of the above C:an increase in the capital barrier to entry D:possible cost advantages for incumbents
答案:ABCD
2.

Smart phone sellers attempt to differentiate their products in many ways, such as (     ):

A:

chip brand

B:

appearance

C:

 internal storage

D:

battery life

3.

In Hotelling’s spatial model, if there is only 1 store, the main street's length is 1 mile, so the monopolist should locate the store on (    ) mile from one end of the main street.

A:

1/3

B:

1/8

C:

1/2

D:

1/4

4.In the spatial model of product differentiation, the Total Social Surplus (TSS) equals the total value of the N units sold to consumers in cases where all N consumers purchase exactly one unit of the good from one of n stores (NR) minus ( ):
A:total transportation costs B:the total variable costs of production (Nc) C:the fixed costs of building n stores (nF) D:monopolist’s average costs 5.In the spatial model of product differentiation, total transportation costs depend on ( ):
A:the number of stores n B:the transportation costs per unit of distance t. C:the total variable costs of production (Nc) D:the fixed costs of building n stores (nF) 6.The two important characteristics of monopolistic competition are ( )
A:easy entry and exit B:product differentiation C:high entry and exit barrier D:product homogeneity 7.Vertical differentiation refers to differences between brands based on different product characteristics but not on different overall quality.
A:对 B:错 8.A McDonald’s Quarter Pounder is somewhat different from a Burger King Whopper or a Wendy’s Single, but the overall quality of the three burgers is similar. This is horizontal differentiation.
A:错 B:对 9.In the spatial model of product differentiation, the socially optimal number of stores is the same number of stores that maximizes the monopolist’s profit.
A:对 B:错 10.

According to first mover model in the product differentiation advantages theory, if the repeat purchases frequence is small, the risk-cost factor  is small.

A:错 B:对