线路设计行车速度350km/h，一般条件下，相邻两曲线间的夹直线和两缓和曲线间的圆曲线最小长度（）m

A.0.6Vmax

B.0.7Vmax

C.0.8Vmax

D.0.9Vmax

A.0.5

B.0.6

C.0.8

D.1.0

A.0.5 vmax

B.0.6 vmax

C.0.7 vmax

D.0.8 vmax

A.80m

B.100m

C.120m

D.140m

A.280m

B.240m

C.200m

D.160m

A.15m

B.14m

C.13m

D.12m