题目内容

50kg/m及以下钢轨,辙叉心宽40mm断面处,辙叉心垂直磨耗其他站线超过()时达到轻伤标准。

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Can we use this material for the decoration of the exhibition hall?

A. Yes. Any available material will do for this job
B. Yes. Water-proof material for the decoration of the hall will be used for the interior decoration
C. No. Fire-proof materials should be used for the interior decoration
D. No. Only highly-cost materials should be used for the interior decoration

50kg/m及以下钢轨,辙叉心垂直裂纹长度(含轨面部分裂纹长度),两条裂纹相加超过()时,应及时更换及焊修。

正线曲线半径为650m,缓和曲线的正矢与计算正矢差允许为()。

同向曲线两超高顺坡终点间直线长度,困难情况下不应短于()。

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