A.0.2
B.0.33
C.0.5
D.0.75
A.0.2
B.0.33
C.0.5
D.0.75
A.增加施工费用
B.减少所需材料
C.增加挖土体积
D.减少施工难度
A.0.5:1
B.1:0.5
C.1:3
D.3:1
A.10.88
B.15.24
C.20.21
D.25.39
A.1:0.5
B.1:1
C.1:1.5
D.1:2
A.18.08
B.19.71
C.19.86
D.19.92
A.0.2
B.0.33
C.0.5
D.0.67
A.0
B.0.33
C.0.5
D.0.25
A.103.98
B.109.16
C.114.13
D.118.49