题目内容

[单选]When quality cannot be easily judged in advance, what provides consumers with information about the quality of a product?

A. a brand name
B. a tie-in
C. the quantity available for sale
D. the amount of deadweight loss

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[判断]Monopolistic competition is characterized by many buyers and sellers, product differentiation, and free entry.

A. 对
B. 错

[判断]A monopolistically competitive market is characterized by barriers to entry.

A. 对
B. 错

[判断]Monopolistically competitive firms, like monopoly firms, maximize their profits by charging a price that exceeds marginal cost.

A. 对
B. 错

[判断]In a monopolistically competitive market, the number of firms adjusts until economic profits are driven to zero.

A. 对
B. 错