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【单选题】
车站站台计算长度内和道岔范围内___竖曲线。
A. 不得设置
B. 可设置一条
C. 可设置两条
D. 可设置三条
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钢轨垂直磨耗在钢轨顶面宽___测量。
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___不是25m钢轨曲线标准缩短轨。
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60kg/m钢轨高___。
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不同类型的钢轨互相联结时,应使用___。
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