A.高投入高產(chǎn)出地段 B.中投入中產(chǎn)出地段 C.低投入低產(chǎn)出地段 D.高投入低產(chǎn)出地段
A.1%-10% B.1.5%-10% C.1.5%-15% D.2%-15%
A.1:2000 B.1:3000 C.1:4000 D.1:5000