A.技術(shù)規(guī)模經(jīng)濟(jì)B.財(cái)務(wù)規(guī)模經(jīng)濟(jì)C.管理規(guī)模經(jīng)濟(jì)D.采購(gòu)規(guī)模經(jīng)濟(jì)
A.技術(shù)規(guī)模經(jīng)濟(jì)B.財(cái)務(wù)規(guī)模經(jīng)濟(jì)C.管理規(guī)模經(jīng)濟(jì)D.研發(fā)規(guī)模經(jīng)濟(jì)