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【判断题】
酶的化学本质是蛋白质，目前发现的所有的酶都是蛋白质。 ( )A.
正确
B.
错误
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举一反三
【单选题】For a firm in perfect competition, the profit maximizing output is 200 tons at a price of $600/ton. If the firm is minimizing the cost of resources, it is least likely that the:
A.
marginal product per unit of labor is 1/3 ton.
B.
marginal revenue product of capital is equal to the price of a unit of capital.
C.
ratio of the marginal output per labor unit to labor units employed is at a maximum.
【单选题】For a profit-maximizing firm, the price level equals its marginal revenue (MR) when ______.
A.
in an oligopolistic market.
B.
in a monopolistic situation.
C.
in a perfectly competitive market.
D.
sales rise with the increase in price level.
【单选题】At the profit-maximizing level of output:
A.
marginal profit equals zero.
B.
marginal profit is less than average profit.
C.
marginal profit exceeds average profit.
D.
marginal cost equals average cost.
【单选题】At the profit-maximizing level of output, marginal profit
A.
is also maximized
B.
is zero
C.
is positive
D.
is increasing
E.
may be positive, negative or zero
【简答题】A firm realizes that it is producing more than the profit maximizing level of output and makes a short-run decision to decrease its output. Which of the firm cost measures is least likely to decrease ...
【单选题】For a profit maximizing monopolist, price:
A.
equals marginal revenue.
B.
is less than marginal revenue.
C.
is greater than marginal revenue.
D.
can be greater than or less than marginal revenue.
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