4 純粹公共財具有何種性質?
(A)敵對性(rivalry)
(B)擁擠性(congestion)
(C)共享性(joint consumption)
(D)排他性(excludability)
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統計: A(14), B(14), C(737), D(30), E(0) #711365
統計: A(14), B(14), C(737), D(30), E(0) #711365