超星 - Ch 13 The Costs of Production

单选题

The minimum points of the average variable cost and average total cost curves occur where the

A. marginal cost curve lies below the average variable cost and average total cost curves.
B. marginal cost curve intersects those curves.
C. average variable cost and average total cost curves intersect.
D. slope of total cost is the smallest.

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单选题

When a factory is operating in the short run,

A. it cannot alter variable costs.
B. total cost and variable cost are usually the same.
C. average fixed cost rises as output increases.
D. it cannot adjust the quantity of fixed inputs.

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单选题

In the short run, a firm that produces and sells house paint can adjust

A. where to produce along its long-run average-total-cost curve.
B. the size of its factories.
C. how many workers to hire.
D. the location of its factory.

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单选题

The most likely explanation for economies of scale is

A. coordination problems.
B. specialization of labor.
C. increasing marginal cost.
D. decreasing marginal cost.

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单选题

Economies of scale occur when

A. long-run average total costs rise as output increases.
B. long-run average total costs fall as output increases.
C. average fixed costs are falling.
D. average fixed costs are constant.

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判断题