题目内容
(请给出正确答案)
[单选题]
在160km/h线路允许速度v≤200km/h时,区间双线的线间最小距离为()
A.3800mm
B.4000mm
C.4200mm
D.4400mm
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A.3800mm
B.4000mm
C.4200mm
D.4400mm
A.+10,-4
B.+10,-6
C.+8,-4
D.+8,-6
A.10
B.6
C.8
D.4
A.5mm
B.±2mm
C.+6mm,-4mm
D.+4mm,-2mm