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【判断题】
紧急对讲时,乘客与司机可以进行全双工双向通话。
A. 对
B. 错
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答案
B
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PIS系统优先级模式不可根据用户需要通过软件进行设置。
A. 对
B. 错
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EFG3橡胶缓冲装置安装于车钩座内,采用的是两个半环形对接的橡胶环形缓冲件,它属于不可复原的能量吸收部件。
A. 对
B. 错
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当列车断高压或辅助电源故障无380V交流供电情况下,能提供客室和司机室紧急通风(全新风状态),向每辆车客室提供4500 m3/h的新风,以保证乘客的安全。
A. 对
B. 错
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日检有电检查准备工作应先合“列车激活”开关(=72-S101),检查蓄电池电压表,应大于104V。
A. 对
B. 错
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车轮上无可见裂纹、处于剥离状态的薄片(宽度<10mm 且长度<20mm)和局部磨平区域(长度<60mm擦伤深度<0.7mm);
A. 对
B. 错
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双周检作业中,受电弓弓头及碳滑板检查要求碳滑板上裂纹任何点距滑板侧边距离不小于10mm,碳滑板上裂纹长度不大于100mm,碳滑板上碳滑板缺损宽度不大于5mm,深度不能到达碳滑板的铝托层。
A. 对
B. 错
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空气弹簧的紧急弹簧和气囊外观、与车体连接的固定螺栓紧固状态检查要求气囊无鼓包,表面裂损长度小于30mm,深度小于0.5mm,宽度小于2mm。
A. 对
B. 错
【判断题】
三月检受电弓清洁降弓位置指示器和上方铝板,测量间隙为5-10mm。
A. 对
B. 错
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空调紧急逆变器输出的电压为AC220V。
A. 对
B. 错
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长沙地铁2号线一期车辆转向架的轮缘润滑方式采用湿式润滑装置。
A. 对
B. 错
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停放制动不同于一般的充气→制动,排气→缓解,它是通过 弹簧作用力而产生制动作用,能满足列车较长时间断电停放的要求。
A. 对
B. 错
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为防止空簧破裂时发生车辆倾斜,两个转向架通过差压阀的连接来平衡空簧内的压力空气。
A. 对
B. 错
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长沙地铁2号线风源系统可视回油单向阀由可视回油观油镜和单向阀组成。
A. 对
B. 错
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长沙地铁2号线风源系统进气阀由进气止回阀与泄压阀两部分组成。
A. 对
B. 错
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车门MVB 网络系统是冗余的,一旦其中1 个主门控器出现网络故障,则MVB 网络通过第另1个主门控器继续通讯。
A. 对
B. 错
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车门直流电机上设有磁性编码器(门位置传感器),位于电机轴上用于电机速度检测,EDCU可根据此信号来确定门运动速度和位置。
A. 对
B. 错
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MVB根据传输介质不同分ESD、EMD、OGF。
A. 对
B. 错
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每列车装有6 个中继模块REP,分别安装于各节车辆中,REP 提供信号的中继放大。
A. 对
B. 错
【判断题】
NRM模式下,列车在非零速时操作紧急解锁装置,车门被解锁,列车启动未出站台(60m 内)将实施紧急制动,待列车停止后乘客手动开门。
A. 对
B. 错
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动圈麦克风灵敏度低,因此特别适合在嘈杂环境中讲话,在人工广播时乘客听不到环境噪音。
A. 对
B. 错
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当列车正常激活后,Tc1司机室机柜的PISC模块上的master指示灯点亮。
A. 对
B. 错
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单个空调机组的总风量为4250m3/h,新风量为1300 m3/h
A. 对
B. 错
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每台空调机组制冷时部件启动顺序为送风机、冷凝风机、压缩机。
A. 对
B. 错
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长沙地铁2号线列车当电网电压在1000V~1850V之间变化时,主电路能正常工作,并方便地实现 牵引-制动 的无接点转换。
A. 对
B. 错
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长沙地铁2号线列车DCU具备当列车控制与诊断系统出现故障时,可用硬线实现紧急牵引功能。
A. 对
B. 错
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长沙地铁2号线列车DCU可实时监测VVVF逆变器及DCU的故障,故障数据包括故障信息和历史数据。
A. 对
B. 错
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长沙地铁2号线列车电-空转换点速度为 3.5-8km/h(可调整)
A. 对
B. 错
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长沙地铁2号线列车在牵引或制动工况时,通过触发导通斩波模块,能抑制因空转等原因引起的瞬时过电压。
A. 对
B. 错
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长沙地铁2号线列车的制动电阻安装于车辆底架下,每节动车一个,采用强迫风冷冷却方式
A. 对
B. 错
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长沙地铁2号线列车每个动力转向架安装两台190kW的牵引电机,控制方式为车控。
A. 对
B. 错
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长沙地铁2号线列车蓄电池正常情况下的电池开路电压为2.15±0.02V
A. 对
B. 错
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长沙地铁2号线列车蓄电池充电设备系统浮充电状态时恒压充电电压为2.25±0.02V。
A. 对
B. 错
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长沙地铁2号线列车蓄电池单体采用阀控式胶体密封铅酸蓄电池
A. 对
B. 错
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长沙地铁2号线列车当制动电阻带温度超过阀值640℃时,触点断开(输出低电平),温度保护装置就会给系统一个信号,牵引逆变器切除电制动,从而保护制动电阻装置。
A. 对
B. 错
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2号线列车网络采用 8 位的循环冗余校验(CRC)方式。
A. 对
B. 错
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在电客车制动时,牵引电传动系统优先进行再生制动,最大限度地将能量返回电网
A. 对
B. 错
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牵引逆变器作为整个交传系统的重要组成部分,它的基本功能是,把从直流电源获得的直流电压变换成频率和幅值都可调的三相交流电,并给牵引电机供电。
A. 对
B. 错
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中继模块REP 作为列车级总线和车辆级总线的网关,实现数据转发功能。
A. 对
B. 错
【填空题】
1.日检前应向DCC领取作业任务单,明确作业车辆编号及作业时间。___
【填空题】
2.日检时,检查司机室侧门门页外观, 脱漆损坏面积不超过900、无裂纹、刮伤长度不超过35mm。___
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历史上最广泛、最彻底、最深刻的,不同于以往一切革命的最新类型的革命是 ___
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take a toll on,in other words ,drop out,in turn ,at risk (of) ,interfere with,be accustomed to, contribute to,cut back on ,hold on to The tax only affects people with an annual income over $200,000-[ ], it will only attect the very rich.
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