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[单选题]
线路两股钢轨顶面,在直线地段应保持同一水平。曲线地段的外轨超高,应按有关规定的办法和标准确定。最大实设超高:双线地段不得超过(),单线地段不得超过125mm。
A.100mm
B.150mm
C.200mm
D.250mm
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A.100mm
B.150mm
C.200mm
D.250mm
A.100mm~160mm
B.200mm~260mm
C.300mm~360mm
D.400mm~460mm
A.500
B.550
C.600
D.700