【单选题】
运用列车质量鉴定时，列车等级分四档，B级列车为___。___
A. 800～899分
B. 900～1000分
C. 700～799分
D. 600～699分
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A
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TFX1电子防滑器传感头安装必须密封，传感头与轴头齿轮间隙必须在___mm之间。___
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B. 0.7±0.4
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造成___为较大事故。___
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B. 5000万以上1亿元以下的直接经济损失
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___为特别重大事故。___
A. 繁忙干线客运列车脱轨18辆以上并中断铁路行车48h以上
B. 客运列车脱轨2辆以上18辆以下并中断繁忙干线铁路行车24h以上或者中断其他铁路行车48h以上
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标记速度为160km/h的客车运行___[或距上次各级修程不超过2年]实施A2级检修。___
A. 20万km±10万km
B. 30万km±10万km
C. 40万km±10万km
D. 50万km±10万km
【单选题】
标记速度为160km/h的客车运行___[或距上次各级修程不超过2年]实施A3级检修。___
A. 40万km±10万km
B. 60万km±10万km
C. 80万km±10万km
D. 100万km±10万km
【单选题】
列车及调车作业中发生冲突、脱轨、火灾、爆炸、相撞，造成客运列车报废1辆或大破2辆以上的，为___。___
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铁道部、安全监管办的安全监察部门应在事故调查组工作结束后___之内，根据事故报告，制作《铁路交通事故认定书》，经批准后，送达相关单位。___
A. 5日
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C. 15日
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【单选题】
客车、发电车火灾或爆炸其破损程度达到：内部烧损需要修换的面积达20m2[包括顶、端、侧、地、门板以及间隔板]时，视为___的条件。___
A. 客车报废
B. 客车大破
C. 客车中破
D. 客车小破
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