A.5%B.15%C.20%D.30%
A.2.5 B.1.68 C.1.15 D.2.0
A.經(jīng)營杠桿效應(yīng) B.財務(wù)杠桿效應(yīng) C.總杠桿效應(yīng) D.風險杠桿效應(yīng)