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【单选题】
工务及委外维保单位人员必须坚决坚持()的方针,把安全工作放在首位 ___
A. 生产是第一要素
B. 安全第一、预防为主
C. 安全第一
D. 预防第一
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答案
B
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专业工程师每季度不少于()次对各工班管内道岔维修质量进行全面检查 ___
A. 0.1
B. 0.2
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【单选题】
车辆段、停车场所有道岔()巡查一遍。 ___
A. 每月
B. 每两个月
C. 每周
D. 每两周
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拨道操作过程中,非操作作业人员应确保远离拨道机至少( )米安全距离。 ___
A. 0.2
B. 1.5
C. 0.1
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【单选题】
我国钢轨的标准长度为( )和( )两种。 ___
A. 6m,25m
B. 7m,25m
C. 12m,25m
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轨道线路曲线半径R≤150时,轨距加宽标准为10mm。 ___
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绝缘接头轨缝不得( )6m。 ___
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岔枕失效标准之一是机械磨损,经削平或除去腐朽木质后,其厚度不足()mm ___
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无缝线路缓冲区接头螺栓扭矩应达到( )。 ___
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轨端肥边大于( )时,应及时处理。 ___
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60kg/m钢轨的构造轨缝是( ) ___
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对于重伤标准,轨头下颏透锈长度超过( )。 ___
A. 20mm
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钢轨总磨耗等于垂直磨耗与( )之和 ___
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两线间材料的堆高不得超过轨面( )。 ___
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不合格道岔整修后,在()分及以上者,可评为合格。 ___
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轨道线路施工作业时需在施工区域前后( )米范围设置1盏红闪灯。 ___
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曲线地段,未被平衡欠超高,一般应( )61mm,未被平衡过超高不得大于30mm。 ___
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( )kg/m钢轨头部侧面磨耗超过17mm时为重伤钢轨。 ___
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下列情况中,( )应对轨缝进行调整。 ___
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在无缝线路上,钢轨折断进行临时处理时,插入的短轨不得短于 ( )的同型钢轨,桂端钻孔,上接头夹板,用螺栓拧紧。 ___
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在直线上的超高顺坡,无缓和曲线时不得大于( )。 ___
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普通线路地段,12.5m钢轨每千米轨缝总误差超过( ),应进行轨缝调整。 ___
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每段无缝线路应设位移观测桩不少于( )对 ___
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观察列车从第一个公里标到第二个公里标所用时间为1min,则行车速度是( )km/h。 ___
A. 50
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若设置缓和曲线后中间圆曲线的长度不足( ),就会使一节车厢的全轴距跨在两个缓和曲线上,不利于行车的平稳。 ___
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