A.30% B.50% C.60% D.90%
A.2:3:5 B.2:5:3 C.5:2:3 D.5:3:2
A.營(yíng)業(yè)毛利率 B.資產(chǎn)凈利率 C.凈資產(chǎn)收益率 D.產(chǎn)權(quán)比率