超星 - CH14 - 查题吧

单选题

[单选]At the profit-maximizing level of output,

A. marginal revenue equals average total cost.
B. marginal revenue equals average variable cost.
C. marginal revenue equals marginal cost.
D. average revenue equals average total cost.

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单选题

[单选]Charlene sells cotton candy. The cotton candy industry is competitive. Charlene hires a business consultant to analyze her company’s financial records. The consultant recommends that Charlene increase her production. The consultant must have concluded that Charlene’s

A. total revenues exceed her total accounting costs.
B. marginal revenue exceeds her total cost.
C. marginal revenue exceeds her marginal cost.
D. marginal cost exceeds her marginal revenue.

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单选题

[单选]A sunk cost is one that

A. changes as the level of output changes in the short run.
B. was paid in the past and will not change regardless of the present decision.
C. should determine the rational course of action in the future.
D. has the most impact on profit-making decisions.

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单选题

[单选]Tommy's Tires operates in a perfectly competitive market. If tires sell for $50 each and average total cost per tire is $40 at the profit-maximizing output level, then in the long run

A. more firms will enter the market.
B. some firms will exit from the market.
C. the equilibrium price per tire will rise.
D. average total costs will fall.

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单选题

[单选]In the long-run equilibrium of a market with free entry and exit, marginal firms are operating

A. at the point where average variable cost equals marginal cost.
B. at the minimum point on their marginal cost curves.
C. at their efficient scale.
D. where accounting profit is zero.

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判断题