【单选题】
客室加热器罩的表面温度不得超过_____℃。___
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相关试题
【单选题】
客车使用的轴温报警器主要有三种类型，其关键区别在于_____不同。___
A. 报警方式
B. 结构
C. 轴温传感器
D. 温度显示范围
【单选题】
BY-2A型客车荧光灯逆变器输出功率为_____W。___
【单选题】
BY-2B型客车荧光灯逆变器输出功率为_____W。___
【单选题】
BY-2C型客车荧光灯逆变器输出功率为_____W。___
【单选题】
BY-2D型客车荧光灯逆变器输出功率为_____W。___
【单选题】
客车空调装置中电动机的过载保护一般采用_____。___
A. 热继电器
B. 接触器
C. 空气开关
D. 可控硅
【单选题】
起动电动机时，自动空气开关立即分断的原因是_____。___
A. 过电流脱扣器瞬时动作整定电流太小
B. 过电流脱扣器瞬时动作整定电流太大
C. 铁心工作面有油污，短路环断裂
D. 失压脱扣器无电压
【单选题】
YZ22型客车两端设有电气连接器，其安装规定为_____。___
A. 1、4位为插座，2、3位为插头
B. 1、3位为插座，2、4位为插头
C. 1、2位为插座，3、4位为插头
D. 不能确定
【单选题】
厂修客车车电固定设备应保证_____内车下配线及车上干线，不因检查、修理不当而影响安全使用。___
A. 1年
B. 2年
C. 3年
D. 一个厂修期
【单选题】
轴温报警器轴位线路短路时，光屏温度显示为_____。___
【单选题】
轴温报警器轴位线路开路时，光屏温度显示为_____。___
【单选题】
正目前,客车常用的车钩有_____两种.___
A. 1号、15号
B. 2号、13号
C. 1号、15G型
D. 13号、15号
【单选题】
凡铁道部所属车辆均应涂打_____标记___
【单选题】
由前向后投影所得的视图是_____。___
A. 俯视图
B. 主视图
C. 左视图
D. 右视图
【单选题】
列车冲突，但损害后果不够大事故的为_____。___
A. 一般事故
B. 险性事故
C. 事故苗子
D. 不算事故
【单选题】
《铁路技术管理规程》规定列车机车与第一辆车的制动软管的连接由_____负责。___
A. 列检人员
B. 调车作业人员
C. 机车乘务组
D. 运转车长
【单选题】
我国车辆上最普遍采用的缓冲器是_____缓冲器。___
A. 弹簧式
B. 摩擦式
C. 橡胶
D. 液压
【单选题】
请输我国规定工业交流用电的频率采用_____HZ。___
【单选题】
客车采暖时间由铁路局根据_____制定，并通知有关铁路局，抄报铁道部。___
A. 规定时间
B. 气候情况
C. 开车运行情况
D. 开车运行区域
【单选题】
需在待发列车后部存放机车、车辆、动车及重型轨道车时[包括在列车尾部摘下的车辆]，对有列检作业的列车，应距列车_____m及其以上。___
【单选题】
请输入试题在站内线路上检查、修理、整备车辆或进行装卸作业时，应按《技规》第359条设置防护信号，移动式防护信号的设置地点，应控制在距离停留车辆_____之间。___
A. 10—20m
B. 20—30m
C. 15—20m
D. 25—30m
【单选题】
在带电的接触网线路上，登上车辆制动台的人员与接触网的带电部分，需保持_____以上的距离，禁止登上棚车制动台。___
A. 1000mm
B. 1500mm
C. 2000mm
D. 2500mm
【单选题】
在超过_____坡道的线路上停留车辆时，须采取拧紧两端车辆人力制动机并以铁鞋牢靠固定。___
A. 1.5‰
B. 2.5‰
C. 3.5‰
D. 4.5‰
【单选题】
列车长度超过列车运行图规定换长_____以上时，为超长列车。___
【单选题】
停留在尽头线上的车辆，须与车挡至少保持_____距离，设有挡车器时，车辆不得碰撞挡车器。___
A. 10m
B. 15m
C. 20m
D. 25m
【单选题】
请输康尼塞拉门有电、有气时用三角钥匙操作装置不能打开和关闭车门的原因是________
A. 机械故障
B. 微动开关损坏
C. 内操作损坏
D. 外操作损坏
【单选题】
康尼塞拉门未关到位即自动返回是什么原因________
A. 防挤压压力开关设定压力太大
B. 防挤压压力开关设定压力太小
C. 与防挤压压力开关无关
D. 拉手有问题
【单选题】
塞拉门内操作能开锁而处操作不能开锁的原因是________
A. 外操作上牵拉钢丝绳的夹头过紧
B. 内操作上牵拉钢丝绳的夹头松动
C. 外操作上牵拉钢丝绳的夹头松动
D. 内操作上牵拉钢丝绳的夹头过紧
【单选题】
由铁路电气化接触网供电的空调客车，照明和通风机电机采用_____供电。___
A. 交流220V
B. 直流110V
C. 交流110V
D. 蓄电池
【单选题】
我国铁路电气化接触网供电的额定电压为单相工频_____V。___
A. 1000
B. 1500
C. 3000
D. 25000
【单选题】
25K型快速客车车辆内部结构和设备具有良好的_____性能。___
A. 阻燃防火
B. 通风采暖
C. 防热抗寒
D. 舒适
【单选题】
25K型快速客车车体钢结构系_____筒体承载结构。___
A. 有中梁簿壁
B. 无中梁簿壁
C. 有中梁厚壁
D. 无中梁厚壁
【单选题】
25K型车制动系统为双管制，正常情况下空气弹簧的用风为_____供给。___
A. 制动管
B. 总风缸
C. 总风管
D. 副风缸
【单选题】
在电气化区段，乘务员所携带的任何物件与接触网设备的带电部分应保持_____m以上的距离。___
【单选题】
25K型车辆的检修修程根据走行公里数来划分如A3修为___万公里___
A. 40±20
B. 40±10
C. 80±20
D. 240±40
【单选题】
不属于防滑器的作用的是______
A. 防止轮对滑行擦伤
B. 调节制动力
C. 用于机车防空转
D. 防止脱轨
【单选题】
电空制动机用电缆控制，其中1、2、3、4、5号线分别为_____。___
A. 制动、缓解、保压、检查、回线
B. 缓解、保压、检查、回线、制动
C. 检查、缓解、保压、制动、回线
D. 检查、回线、保压、制动、缓解
【单选题】
面向电磁阀自左至右依次为________
A. 制动电磁阀、缓解电磁阀、保压电磁阀
B. 保压电磁阀、制动电磁阀、缓解电磁阀
C. 缓解电磁阀、保压电磁阀、制动电磁阀
D. 缓解电磁阀、制动电磁阀、保压电磁
【单选题】
电子显示屏不亮的原因是________
A. AC220V供电不正常
B. AC380V供电不正常
C. DC48V供电不正常
D. 显示屏缺行或缺列
【单选题】
电子显示屏全部死机的原因是________
A. 无电源或瞬间断电,主控站损坏
B. 保险丝断
C. 主控板损坏
D. +5V电源输出不正常
推荐试题
【单选题】
___ all obstacles and failures, the scientist continued doing his experiments day and night.
A. In spite of
B. In contrast to
C. As a matter of
D. As a result of
【单选题】
I’m willing to ___ that a larger car would have cost more, but I still think we should have bought one.
A. withdraw
B. indicate
C. abandon
D. concede
【单选题】
Manufacturing (制造) companies spend millions of pounds on advertisements, trying to ___ customers that their products are better than those of other companies.
A. confine
B. convince
C. depress
D. reconcile
【单选题】
He is not the right person for the project: he is not very technically minded and ___, he does not have the sense of responsibility.
A. instead
B. yet
C. furthermore
D. nevertheless
【单选题】
Death rates declined in many places, partly because of the ___ in hunger.
A. decrease
B. myth
C. obstacle
D. burden
【单选题】
In deciding whether or not a situation is safe, pilots must be taught to assume that the worst will happen, and then to ___ whether there is a risk or not.
A. absorb
B. apply
C. assess
D. occupy
【单选题】
The worker was not worried as he knew that if he gave up the job, there would be ___ opportunities for him to work somewhere else.
A. formative
B. marginal
C. vigorous
D. numerous
【单选题】
The research shows the region might ___ overheating (经济过热), but the policymakers so far appear to be relatively relaxed about the future of the economy.
A. catch a glimpse of
B. be at risk of
C. take a toll on
D. be free from
【单选题】
Measures have been taken to ensure that no student will have to ___ of college for economic reasons.
A. lay out
B. cancel out
C. drop out
D. stand out
【单选题】
Stress that is not treated can lead to significant medical illnesses, which ___ can lead to greater stress and even depression (抑郁症).
A. after all
B. in turn
C. on the contrary
D. at least
【单选题】
Narcissism (自恋) has its benefits in terms of self-belief and confidence, but it also tends to be ___ risky decision-making.
A. associated with
B. contrasted with
C. reserved for
D. relieved of
【单选题】
When Tom saw his doctor again, she suggested that maybe a more substantial lunch, like a sandwich, might ___ his desire to have snacks in the afternoon.
A. count on
B. cut back on
C. hold on to
D. contribute to
【单选题】
You shouldn’t ___ – let your children make their own decisions.
A. interact
B. abuse
C. startle
D. interfere
【单选题】
This is a huge and difficult project and if you take it up, you ___ many difficulties.
A. like to encounter
B. like encountering
C. are likely to encounter
D. are like to encounter
【单选题】
The ability to live for a long time without water is characteristic ___ the camel.
A. of
B. for
C. about
D. in
【单选题】
Rising sales is a good ___ that this product is well received in the market.
A. response
B. convention
C. indication
D. Influence
【单选题】
When tourists travel abroad, they are sometimes ___ by the local people because the tourists don’t know the real value of products.
A. turned in
B. given chase
C. wrapped up
D. ripped off
【单选题】
The professor’s lecture ___ the capacity of his young audience. They all looked puzzled at him.
A. pointed out
B. went beyond
C. contributed to
D. kept off
【单选题】
We must ___ on the amount of time we use on this project.
A. cut both ways
B. cut in line
C. cut off
D. cut down
【单选题】
We have to be very patient with this experiment. It will take time for some effects to ___ clearly.
A. build up
B. break up
C. clear up
D. show up
【单选题】
Perhaps there is a(n) ___ of truth in both theories, but few of us would ever have the opportunity to find out.
A. lump
B. substance
C. section
D. element
【单选题】
Be careful when you get along with her because she is known for her short ___.
A. temper
B. emotion
C. mood
D. feeling
【单选题】
It seems that wearing less formal clothing to school and work is becoming a(n) ___.
A. trend
B. campaign
C. goal
D. occurrence
【单选题】
You cannot correct children’s bad behavior simply with a (n) ___ or two on the hand or face.
A. slap
B. smash
C. slam
D. strike
【单选题】
Our investigations (调查) ___ something very surprising – many of the employees are underpaid and work overtime all the time.
A. reveal
B. bump
C. rip
D. frustrate
【单选题】
She was James’s faithful assistant, in whom he could have ___ confidence.
A. essential
B. automatic
C. ultimate
D. absolute
【单选题】
If you visit this website, you can ___ the categories to find information about all the universities in that area.
A. observe
B. browse
C. glance
D. look
【单选题】
Making New Year’s resolutions (计划) is a custom that still ___ in this country.
A. prevails
B. attaches
C. descends
D. launches
【单选题】
The military officers were more ___ about their own victory and therefore more willing to predict their enemy’s defeat.
A. appropriate
B. ignorant
C. negative
D. optimistic
【单选题】
___ is no doubt that overwork and much worry caused his illness.
A. It
B. There
C. Here
D. This
【单选题】
___ a day goes by that I don’t receive dozens of junk mails in my email box.
A. None
B. Usually
C. Nearly
D. Hardly
【单选题】
Please trust me. Try this new method ___.
A. you feel very relaxed
B. and you feel very relaxed
C. you will feel very relaxed
D. and you will feel very relaxed
【单选题】
John said Mom was coming back tomorrow, not next week. If this is the ___, we’ll all have to clean the house thoroughly.
A. point
B. norm
C. question
D. case
【单选题】
It is far too late for you to go out and play football, ___ the fact that it’s raining.
A. no doubt
B. despite
C. given
D. not to mention
【单选题】
However, under no circumstances should we ___ our achievements, nor should we regard our accomplishments as unimportant.
A. present
B. perceive
C. exemplify
D. exaggerate
【单选题】
Jane picked up a magazine from the bookshelf and started reading here and there ___.
A. accurately
B. randomly
C. emotionally
D. continually
【单选题】
In many Middle Eastern cultures a deadline is taken as a(n) ___, and such terms should not appear in a purchase contract with businessmen from these countries.
A. target
B. favor
C. honor
D. insult
【单选题】
He is by no means a(n) ___ man. On the contrary, he always departs from customs.
A. disgraceful
B. sophisticated
C. traditional
D. intelligent
【单选题】
Although the nuclear radiation problems remain unsolved, the government’s emphasis has been ___ from coal to nuclear.
A. intended
B. defined
C. attached
D. switched
【单选题】
The psychologist doesn’t say directly, but seems to ___ that emotional maturity and self-stimulation are the key elements for success.
A. inquire
B. imply
C. refer
D. confront
