【判断题】
无级调速机车主手柄置于升位，5、6、7号触头闭合，柴油机转速上升
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柴油机启动后，如将试灯插头插入插座，当有关电路发生接地后，有可能发生电气误动作
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任一台牵引电动机故障使用电阻制动时，制动电流不应过大
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无级调速机车主手柄的8号触头，在前三位时闭合，后两位时断开
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机车附挂运行时，做电气动作试验时，应与运行方向相同
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1ZJ在走车电路中的主要功能是防止高位起车
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JZ-7型空气制动机紧急限压阀的制动状态与正在缓解状态通路相同，作用不同
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制动管向工作风缸和降压风缸充气是通过分配阀的副阀部实现的
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机车单独缓解时，JZ-7空气制动机各阀之间的控制关系为：单阀一作用阀一机车制动缸
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JZ-7型空气制动机自阀的作用是通过控制均衡风缸的压力变化，经中继阀的作用来控制制动管的充、排气
【判断题】
JZ-7型空气制动机自阀手柄在紧急制动位时，其放风阀才被推开
【判断题】
JZ-7型空气制动机自阀手柄置为过充位时，使制动管得到比规定压力高30—40kPa的过充压力
【判断题】
局减止回阀的作用是再制动时防止局减室内压力空气向制动管逆流
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JZ-7型空气制动机分配阀的功用是根据制动管的压力变化来控制作用风缸的压力变化
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列车制动后单独缓解机车，当松开单阀的手柄时，手柄自动恢复到制动区最小减压位
【判断题】
JZ--7型空气制动机只具有阶段缓解作用
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JZ--7型空气制动机分配阀副阀具有局减作用
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JZ-7型空气制动机当非操纵端自阀手柄误放运转位，操纵端自阀施行制动时，操纵端中继阀排风口排风不止
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JZ-7型空气制动机当客货车转换阀置于客车位时，总风遮断阀呈关闭状态
【判断题】
JZ-7型空气制动机自阀制动后回运转位，列车管压力回升慢，此时将自阀手柄置于制动区，将客货车转换阀置于客车位，二位柱塞阀排气正常时为通路8a堵小
【判断题】
JZ-7型空气制动机自阀制动，机车制动缸增压正常，保压一段时间后，工作风缸突然阶段下降，机车也突然阶段缓解，为降压风缸泄漏
【判断题】
JZ-7型空气制动机自阀制动后，工作风缸压力正常，机车制动缸压力随制动管泄漏而逐渐增高，为制动管泄漏
【判断题】
JZ--7型制动机变向阀柱塞卡滞后，将制动阀手柄移至制动无效的作用位置，然后轻轻敲击故障变向阀体
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JZ-7型空气制动机自阀手把紧急制动位，制动缸的压力达到450kPa，其升压时间为5--7s
【判断题】
JZ-7型空气制动机中均管泄漏时，自阀手柄前五位与均衡风缸泄漏现象相同，取柄位时，均衡风缸排气速度正常，制动管压力逐渐下降
【判断题】
JZ-7型空气制动机自阀制动后，工作风缸外漏会使机车不制动或制动后自然缓解，但内漏时不影响
【判断题】
JZ-7型空气制动机工作风缸压力既不会追随制动管减压，也不会追随制动管阶段增压
【判断题】
JZ-7型空气制动机作用阀的作用位置一是缓解位，二是制动后的保压位
【判断题】
运行中，不能观察到车顶百叶窗状态，故无法判断冷却风扇是否全速运转
【判断题】
配气机构是柴油机的进、排气过程的控制机构
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联合调节器的主要功用是保证柴油机的启动和停机
【判断题】
柴油机在运用中，不允许随意损坏铅封松动最大供油止挡
【判断题】
组装差示压力计触针，触针距“0”刻线25mm，然后紧固好接头螺母及触针螺母
【判断题】
当机油压力达80kPa以上时，即可松开1QA，柴油机启动结束
【判断题】
柴油机防爆安全阀由阀盖，阀杆，弹簧及密封圈组成
【判断题】
辅助机油泵的功用是在柴油机启动前，向柴油机润滑系统的各摩擦面提供机油
【判断题】
16V240ZJB型柴油机正常停机水温应在50-60~C之间
【判断题】
启动柴油机前启动机油泵先工作45--60s，使柴油机各部在初步具备良好润滑条件下才能启动
【判断题】
使用万用表测量电压时，表笔应与电路串联
【判断题】
柴油机启动后，松开1QA后又停机是因为经济电阻Rdls断路或1--2YJ未接通
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Showing some sense of humor can be a(n) ___ way to deal with some stressful situations.
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Emotional Intelligence (情商) could be of practical use in many ___ such as how companies decide which job applicant to hire, how parents should raise their children, how schools should teach the students, and so on.
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The teacher should praise students for their correct answers and also suggest ___ possibilities.
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In some classrooms, desks are arranged in a U-shape, so the teacher can ___ easily with the students.
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Computer technology ___ individuals to educate themselves and adapt to a constantly changing job market.
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___ the world has ever seen has occurred in the information and communications technologies.
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___ so many people around, it wasn’t convenient to have a long talk with him.
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