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外交人員考試三等考試-外交領事人員類科英文組二國際經濟(以英文命題及作答)1118單選題

Regarding the Marshall Lerner Condition (M-L Condition), which of the following statements is correct?

AThe sum of price elasticity of foreign demand for domestic products and the price elasticity of domestic demand for foreign products are less than 1.
BSugar and rice are products suitable for the M-L Condition.
CThe M-L Condition in the very short run may not be effective.正確答案
DThe M-L Condition in the long run may not be effective.
答案與詳解
C
正確答案
M-L 條件:進出口需求價格彈性之和 > 1,貶值才能改善貿易餘額;短期因彈性小常失效(J曲線)。

為什麼答案是 C

正解。極短期內消費者與廠商來不及調整,進出口數量僵固,彈性和常 < 1,造成 J 曲線效應——貶值初期貿易餘額反而惡化,M-L 條件失效。

考點:彈性和方向錯考點:低彈性商品考點:J曲線/短期失效考點:長期有效
載入中…

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