A.均一費率 B.包箱費率 C.運量折扣費率 D.單一費率
A.遞增的規(guī)模經(jīng)濟效益 B.遞減的規(guī)模經(jīng)濟效益 C.不變的規(guī)模經(jīng)濟效益 D.無規(guī)律的規(guī)模經(jīng)濟效益
A.遞減的規(guī)模經(jīng)濟效益 B.遞增的規(guī)模經(jīng)濟效益 C.不變的規(guī)模經(jīng)濟效益 D.無規(guī)律的規(guī)模經(jīng)濟效益