justyle says Opportunity cost:選擇某項行為時,必定要放棄某些事物,其中價值最高者為之 - #8ub4ki - Plurk

14 years ago

Opportunity cost:選擇某項行為時,必定要放棄某些事物,其中價值最高者為之

爆米花🌈炸肉圓ONLY says

14 years ago

機會成本?

14 years ago

是阿

☆↖文↘☆ says

14 years ago

zz

立即下載

14 years ago

ZZ

14 years ago

爆米花🌈炸肉圓ONLY says

14 years ago

我今天上了供需法則，好複雜