條問題係:
Is birthday gift an free good? Why?
唔識既先用中文答
F.4 ECON
2007-10-07 9:10 pm
回答 (3)
2007-10-09 4:48 am
阿sir話要寫埋乜係opportunity cost先攞足分喎…可以寫多啲
2007-10-07 9:21 pm
No. Opportunity cost is involved in the production of birthday gift.
參考: Me
收錄日期: 2021-04-13 13:48:10
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071007000051KK02065