【判断题】
(70854)空调客车的空调温控器应设定为:冬季14~16 ℃,夏季22~24 ℃。( )(1.0分)
A. 对
B. 错
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答案
B
解析
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(70858)集中供电空调列车,库内停留期间须使用外接地面电源进行检修。( )(1.0分)
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(70859)接触器是一种自动的电磁开关,用来接通和断开动力电路。( )(1.0分)
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(70860)接触器与继电器的结构和工作原理基本相同,可以互换使用。( )(1.0分)
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(70862)中间继电器只能作转换控制信号的中间元件使用,不能用来直接通断电路。( )(1.0分)
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(70863)采用密接式车钩的列车,须备有中间体过渡车钩、15号过渡车钩、密接式车钩。( )(1.0分)
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(70864))热继电器的整定电流若只稍大于电动机的额定电流,则电动机不能正常启动。( )(1.0分)
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(70865)列车编组中,密封风挡可以与橡胶风挡或铁风挡连挂。( )(1.0分)
A. 对
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(70866)在三相四线制电路中,三相负载愈接近对称,中线电流愈小。( )(1.0分)
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(70867)采用机车供电的旅客列车,因车辆故障造成机车跳闸或无法送电且不能修复时,必须甩车处理,尽快恢复全列车供电。( )(1.0分)
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(70868)提高电路的功率因数,就可延长电器设备的使用寿命。( )(1.0分)
A. 对
B. 错
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(70869)旅客列车可以编挂制动关门车,但最后一辆不得为关门车。( )(1.0分)
A. 对
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(70870)无功功率就是“无用”功率。( )(1.0分)
A. 对
B. 错
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(70871)准确度在1.0级至5.0级的测量仪表适用于一般工业生产。( )(1.0分)
A. 对
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(70872)钳形电流表可以在测量过程中直接切换量程。( )(1.0分)
A. 对
B. 错
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(70873)功率因数表可动部分的位置既不随负荷电流变化,也不随电压变化,而只由负荷电路的功率因数来决定。( )(1.0分)
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(70874)使用兆欧表测量绝缘电阻过程中,如果指针指向“0”位,表明被测绝缘已失效,应立即停止转动摇把,防止烧坏兆欧表。( )(1.0分)
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(70875)铁路是国家重要的基础设施,国民经济的大动脉,交通运输体系的骨干,是运输能力大、节约资源、有利环保的交通运输方式,在全面建设小康社会的进程中肩负着重要的历史使命。( )(1.0分)
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(70876)铁路使用的产品须符合国家和铁道行业技术标准,铁路重要产品须按照国家和铁道部有关规定,实行行政许可管理或产品强制认证。( )(1.0分)
A. 对
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(70877)列车在电气化铁路发生火灾时,在不足4 m和未停电的情况下,可以使用水和一般的灭火器灭火。( )(1.0分)
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(70878)直达特快列车及动车组不设运转车长。( )(1.0分)
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(70880)行使运转车长职能的车辆乘务员可使用列车无线调度通信系统。( )(1.0分)
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(70881)特快旅客列车指列车运行图规定的速度超过120 km/h不超过160 km/h的旅客列车。( )(1.0分)
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(70882)列车发生火灾、爆炸时,须立即停车(停车地点应尽量避开特大桥梁、长大隧道等),并应立即通知供电部门停电。( )(1.0分)
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(70883)最高运行速度为160 km/ h的列车紧急制动距离限值为1 200 m。( )(1.0分)
A. 对
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(70884)密接式车钩摘挂作业,车钩的摘挂和软管的摘结均由调车人员负责。( )(1.0分)
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(70885)密接式车钩的客车回送时,原则上应附挂旅客列车回送,附挂货物列车回送时,应挂于尾部,但不得超过2辆。( )(1.0分)
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(70886)旅客列车尾部加挂客车原则上不得超过2辆,遇特殊情况必须超过2辆时,应将运转车长值乘位置和列车尾部标志灯移至列车尾部。( )(1.0分)
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(70887)列车简略试验:有列检作业的由列检人员负责,无列检作业的由运转车长负责,无运转车长的由车辆乘务员负责,无车辆乘务员的由车站人员负责,挂有列尾装置的列车由司机负责。( )(1.0分)
A. 对
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(70888)铁路信息技术一类设备应提供不低于5日×8 h技术支持与维护服务。( )(1.0分)
A. 对
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(70889)列车调度电话、站间行车电话以及列车无线调度通信设备均须装设通信记录装置。( )(1.0分)
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(70890)车辆修程,客车和特种用途车按走行公里进行检修,最高运行速度不超过120 km/h的客车分为A1,A2,A3,A4。( )(1.0分)
A. 对
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(70892)根据事故造成的人员伤亡、直接经济损失、列车脱轨辆数、中断铁路行车时间等情况,事故等级分为特别重大事故、重大事故、较大事故和一般事故。( )(1.0分)
A. 对
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(70893)重大事故由国务院铁路主管部门组织事故调查组进行调查。( )(1.0分)
A. 对
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(70894)事故调查报告是事故赔偿、事故处理以及事故责任追究的依据。( )(1.0分)
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