問題詳情
18.有些物品，如果任由市場機能運作，可能會面臨沒有人願意提供的局面，因為這些東西有很大的外部效益，但卻收費困難、提供者將血本無歸，如燈塔。這是市場失靈的現象，須由政府提供。
(A)O
(B)X
(A)O
(B)X
參考答案
答案：A
難度：適中0.636364
統計：A(7),B(3),C(0),D(0),E(0)
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