A.2% B.3% C.5% D.10%
A.1m高到地下0.1m B.1m高到地下0.2m C.1.5m高到地下0.2m D.2m高到地下0.2m
A.1.0,1.0 B.1.5,1.0 C.2.0,1.0 D.2.5,1.5