A.2%
B.3%
C.3.5%
D.4%
A.2%
B.3%
C.3.5%
D.4%
A.3.0%
B.4.0%
C.5.0%
D.6.0%
A.1%至2%
B.2.5%至3.5%
C.2%至3%
D.3%至4%
A.4%
B.6%
C.8%
D.10%
A.0.5%~1.5%
B.1.0%~2.0%
C.1.5%~2.5%
D.2.0%~3.0%
A.4%
B.6%
C.8%
D.10%
A.20km/h
B.40km/h
C.30km/h
D.50km/h
A.一般值为6%
B.应根据具体地形条件适当调整
C.一般值为8%
D.必须严格限制在4%以下
A.3%
B.5%
C.7%
D.9%