A.<13% B.13%~14% C.14%~15% D.>15%
A.近似解<精確解 B.近似解>精確解 C.近似解-精確解 D.不確定關系
A.利潤總額 B.利潤總額—所得稅 C.利潤總額—所得稅—貸款利息 D.利潤總額+折舊費