A.2.7V B.7V C.7.4V D.90mV
A.農(nóng)業(yè)社會(huì)B.經(jīng)濟(jì)主義C.科技社會(huì)D.社會(huì)主義
A.出發(fā)點(diǎn)B.維持點(diǎn)C.立足點(diǎn)D.基礎(chǔ)點(diǎn)