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智慧树中级微观经济学(双语)最新单元测试答案

【单选题】Monopoly is ___.

price taker
quantity maker
price maker
quantity taker

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【单选题】Scarce resources mean

Resource must be protect for next generation
Resources will be exhausted
Resources are not renewable
Comparing with demand, resources are always limited

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【单选题】nonnegative means ( )

For samll changes in price, Hicks and Slutsky definitions for substitution effects are nonnegative
If we have a normal good, the subtitution effect and the income effect work in is nonnegative.
If the price of a good goes up, if the good is a normal good, then it is nonnegative
If price of good goes down, the change in the demand for the good due to the subtitution effect must be nonnegative

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【单选题】Barries of Entry is ( )

charging different prices to different groups.
set by the industry organization
legal (patent), economies of scale, control of resources
a kind of state that no one could change.

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【单选题】The demand curve shows ( )

how much firms would like to sell at each prices.
how much market would like to trade.
how much people would like to pay at the reserve prices.

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【单选题】To sell at a Larger Q, Monopoly must

Lower Price from all units sold = MR < P
The buyer's WTP which also increases Profit
reduced from a Lower Price
Sells same good to different people at different prices.

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【单选题】The production function Q = 50K0.75L0.75

increasing returns to scale.
increasing, then diminishing returns to scale.
decreasing returns to scale.
constant returns to scale.

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【判断题】Monopoly always has constant elasticity demand.


【单选题】Which of the following is a short-run adjustment?

BMW constructs a new assembly plant in South Carolina
Six new firms enter the plastics industry
A local bakery hires two additional bakers
The number of farms in the United States declines by 5 percent

【单选题】Microsoft is a/an ___ in Windows operating system.

monopsony
oligopoly
monopoly
competitive firm

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【单选题】A firm has a production function f (x,y)=1:10(x0.20 + y

increasing returns to scale.
increasing returns to scale if x + y > 1 and decreasing returns to scale otherwise.
decreasing returns to scale.
constant returns to scale.

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【判断题】Consumer's surplus is another name for excess demand.


【单选题】Does ( ) decline eventually as the number of workers increases

Minimum efficient scale
total cost
average fixed cost
MPL

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【判断题】If preferences are transitive, more is always preferred to less.


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【单选题】In any production process, the marginal product of labor equals:

the change in output per unit change in labor input for 'small' changes in the amount of input.
total output divided by total labor inputs.
total output produced with the given labor inputs.
the value of total output minus the cost of the fixed capital stock.

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【判断题】Competition among firms in an industry can lower prices and profits


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【判断题】In market, prices will transfer information about supply and demand


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【判断题】In a Nash equilibrium, everyone must be playing a dominant strategy


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【判断题】In a Edgeworth box there are lot of allocations that are Pareto-optimal.


【单选题】Which of the following is most likely to be an implicit cost for Company X?

rental payments on IBM equipment
payments for raw materials purchased from Company Y
transportation costs paid to a nearby trucking firm
forgone rent from the building owned and used by Company X

【判断题】Price equals marginal cost is a sufficient condition for profit maximization


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【判断题】If a price changes, then changes in consumption at the intensive margin are cha


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【判断题】If the supply curve is vertical, then the amount supplied is independent of price.


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【单选题】opposite to that of the price change, ( ) just like the sultsky substitution effect

Hicks substitution effect must be in a direction
Hicks substitution effect
SARP is both a necessary and a sufficient condition ( Unlike WARP) for what?
The substitution effect is

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