A.Wh=28.5,Bh=19,Ch=0.15 B.Wh=0.5,Bh=120,Ch=0.03 C.Wh=1.0,Bh=100.5,Ch=O.05 D.Wh=80,Bh=2.05,Ch=0.01
A.C1/C2=1,C1/C3=20,C1/C4=5 B.C1/C2=8,C1/C3=20,C1/C4=30 C.C1/C2=40;C1/C3=20,C1/C4=10 D.C1/C2=70,C1/C3=150,C1/C4=15
A.2~3m B.3~4m C.4~5m D.6~7m