题目内容
(请给出正确答案)
[单选题]
在120km/h≤线路允许速度≤160km/h时,客货共线铁路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
B.6
C.8
D.4
A.1.0‰
B.1.2‰
C.1.5‰
D.2.0‰
A.5mm
B.±2mm
C.+6mm,-4mm
D.+4mm,-2mm