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【单选题】
虽有槁 暴 ,不复挺者,輮使之然也 ( )A.
欺凌，损害
B.
晒
C.
又猛又急的
D.
暴躁
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【简答题】简述循环经济的实现模式
【简答题】?模型是对现实世界的1)______描述，是为了帮助我们2)______地理解现实世界而设计的。在我们的经济模型中，我们将关注某一个因素的3)______会如何影响经济的结果。我们把它称为4)______的假设。本章建立的三个5)______是生产可能性边界模型，即一个帮助经济学家考虑每个经济面临的6)_______的模型；比较优势模型，它阐明了7)______；以及循环流向图，它帮助经济学家分析...
【单选题】The zero-profit price for a firm in perfect competition:
A.
is a price just sufficient to cover fixed cost.
B.
is at the point where total revenue from sales is at its minimum level.
C.
occurs at the point where marginal and average cost are equal.
D.
occurs at the point where marginal cost is at its minimum level.
【单选题】When marginal cost is greater than zero, the profit-maximizing point price elasticity of demand must be:
A.
greater than zero but less than one.
B.
equal to one.
C.
greater than one.
D.
equal to zero.
【简答题】长期零经济利润条件(long-run zero-profit condition)
【单选题】In economic analysis, any amount of profit earned above zero is considered "above normal" because:
A.
normally firms are supposed to earn zero profit.
B.
this would indicate that the firm's revenue exceeded both its accounting and opportunity cost.
C.
this would indicate that the firm was at least earning a profit equal to its opportunity cost.
D.
this would indicate that the firm's revenue exceeded its accounting cost.
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