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自动 刮水器系统主要由操纵开关、刮水传动机构、刮水电机、刮水片等部分组成; 电动 刮水系统还装有雨量传感器、控制单元等。A.
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【单选题】Excess capacity occurs in long-run equilibrium under monopolistic competition so that:
A.
price is less than marginal cost.
B.
price exceeds minimum average cost.
C.
marginal revenue exceeds price.
D.
all of the above occur.
【单选题】Long-run equilibrium under monopolistic competition is similar to long-run equilibrium under perfect competition in that:
A.
price equals the minimum average total cost.
B.
firms face perfectly elastic demand curves.
C.
price equals average cost.
D.
marginal revenue equals average cost.
【单选题】Under oligopoly, firms' pricing policies are ________ and, under monopolistic competition, they are ________.
A.
interdependent; independent
B.
independent; interdependent
C.
cooperative; uncooperative
D.
uncooperative; cooperative
E.
profit maximizing; revenue maximizing
【单选题】肾炎时，毛细血管壁增厚呈车轨状或分层状见于
A.
急性弥漫性增生性肾小球肾炎
B.
弥漫性系膜增生性肾小球肾炎
C.
弥漫性膜性增生性肾小球肾炎
D.
弥漫性硬化性肾小球肾炎
E.
弥漫性新月体性肾小球肾炎
【单选题】Which of the following is not true of long run equilibrium under monopolistic competition?
A.
Price equals marginal cost.
B.
Price equals average cost.
C.
Price equals minimum average total cost.
D.
None of the above.
【单选题】A firm in long-run equilibrium under monopolistic competition will earn
A.
zero economic profits because of free entry.
B.
positive monopoly profits because each sells a differentiated product.
C.
positive oligopoly profits because each firm sells a differentiated product.
D.
negative economic profits because it has economies of scale.
E.
positive economic profit if it engages in international trade.
【单选题】Product differentiation under monopolistic competition means that each firm:
A.
charges a slightly different price.
B.
has a pure monopoly.
C.
maximizes profit where MC = P.
D.
faces a horizontal demand curve.
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