A.增加B.遞增C.遞減D.減少
A.收縮規(guī)模B.不變規(guī)模C.放任自由規(guī)模D.擴(kuò)張規(guī)模
A.投資機(jī)會(huì)成本B.社會(huì)機(jī)會(huì)成本C.外部機(jī)會(huì)成本D.經(jīng)濟(jì)機(jī)會(huì)成本