A.技術規(guī)模經(jīng)濟；財務規(guī)模經(jīng)濟；管理規(guī)模經(jīng)濟；采購規(guī)模經(jīng)濟；研發(fā)規(guī)模經(jīng)濟
B.技術規(guī)模經(jīng)濟；財務規(guī)模經(jīng)濟；管理規(guī)模經(jīng)濟；采購規(guī)模經(jīng)濟；風險規(guī)承擔規(guī)模經(jīng)濟
C.技術規(guī)模經(jīng)濟；財務規(guī)模經(jīng)濟；管理規(guī)模經(jīng)濟；風險承擔規(guī)模經(jīng)濟以及研發(fā)規(guī)模經(jīng)濟
D.技術規(guī)模經(jīng)濟；財務規(guī)模經(jīng)濟；管理規(guī)模經(jīng)濟；采購規(guī)模經(jīng)濟；風險承擔規(guī)模經(jīng)濟以及研發(fā)規(guī)模經(jīng)濟