Which of the following can prevent markets from reaching the efficient level of production? I. a monopoly II. taxes III. the product is a public good ( )
A: I and II
B: II
C: II and III
D: I, II and III
E: a monopoly I taxes III. the
product is a public good ( D )
A: I and II
B: II
C: II and III
D: I, II and III
E: a monopoly I taxes III. the
product is a public good ( D )
举一反三
- 下列化合物发生水解反应的活性顺序正确的是I．苯甲酰氯 II．苯甲酸酯 III．苯甲酸酐 IV．苯甲酰胺 A: I > III > II > IV B: II > I > III > IV C: IV > II > III > I D: III > IV > I > II E: I > II > III > IV
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- Which of the following are purposes of management information? A: I and II B: II and III C: I and III D: I, II and III