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《经济学概论》复****题
一、选择题
Complete market failure always exists when ( )
A there are negative externalities in production.
B the free market fails to provide sufficient merit goods.
C the free market under-prices demerit goods.
D there is a missing market in the provision of public goods.
Which one of the following situations would lead to an increase in equilibrium price? ()
A Demand is perfectly inelastic and labor costs rise
B Demand is perfectly elastic and labor costs rise
C Supply is perfectly elastic and the price of a substitute good falls
D Demand is perfectly inelastic and labor costs fall
线
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PPI
u
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Dema nd
QUANTITY
3. The diagram above shows the demand and supply curves for a normal good. The equilibrium price could rise from Pl to P2 if
consumers As its output increases, a fimi's short-run marginal cost will eventually increase because of
diseconomies of scale
a lower product price
inefficient production
the firm9 s need to break even
incomes increased
P2 were set as a legal maximum
subsidies on the product increased
the price of a complementary product increased
costs of production were substantially lowered
Answer:A
A perfectly competitive producer of steel rods and steel beams employs 100 workers with identical skills. If steel rods and steel beams sell for the same price, which of the following rules should the producer always follow to use the 100 workers efficiently?
Allocate workers so that the average cost of producing beams equals the average cost of producing rods.
Allocate workers so that the marginal product of labor is the same in both rod production and beam production.
Allocate half the workers to rod production and half the workers to beam production.
I only
II only
III only
II and III only
I, II, and III
Assume a consumer finds that his total expenditure on compact