A.B2M和M2CB.X2X和APSC.B2G和C2GD.B2PB和PB2PB
A.8B.12C.18D.24
A.市場(chǎng)利潤(rùn)B.經(jīng)濟(jì)利潤(rùn)C.經(jīng)濟(jì)效益D.生產(chǎn)成本