[单选] Curve D intersects curve C
A. where the firm maximizes profit.
B. at the minimum of average fixed cost.
C. at the efficient scale.
D. where fixed costs equal variable costs.
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[单选]When marginal cost is greater than average cost, average cost is
A. rising.
B. falling.
C. constant.
D. The direction of change in average cost cannot be determined from this information.
[判断]企业的总利润等于边际收益减去边际成本。
A. 对
B. 错
[判断]对于完全竞争行业的企业,总收益、边际收益和平均收益都是相等的。
A. 对
B. 错
[判断]因为在完全竞争市场中有很多买者和卖者,没有一个卖者可以影响市场价格。
A. 对
B. 错