对于平面线形设计,当设计车速≥ 60km/h 时,同向曲线间直线最小长度 ( 以 m 计 ) 以不小于设计车速 ( 以 km/h 计 ) 的( )倍为宜。
A.
2
B.
3
C.
4
D.
6
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参考答案:
举一反三
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