相关试题
【单选题】
摩擦制动是将物体的动能转化为热能，从而产生制动作用，通常可以分为闸瓦制动、___、磁轨制动、液力制动。
A. 再生制动
B. 电阻制动
C. 盘形制动
D. 涡流制动
【单选题】
限制向后（RMR）模式车辆限速___km/h。
【单选题】
限制向前（RMF）模式车辆限速___km/h。
【单选题】
低电压由辅助逆变器输出和___提供。
A. 接触网
B. 蓄电池
C. 牵引逆变器
D. 车间电源
【单选题】
轨道电路是以___作导体，两端加以机械绝缘（或电气绝缘），接上送电和受电设备构成的电路。
【单选题】
南京地铁列车上有3种车钩类型：全自动车钩，___，半永久牵引杆。
A. 半自动永久车钩
B. 全自动永久牵引杆
C. 永久牵引杆
D. 半自动车钩
【单选题】
解钩可分为自动解钩和___。
A. 非自动
B. 电气解钩
C. 半自动解钩
D. 手动解钩
【单选题】
当车间电源被使用时，___列车线被激活。
A. 降弓
B. 升弓
C. 受电弓
D. 紧急制动
【单选题】
在唤醒模式时，静态逆变器不工作，蓄电池可以提供___分钟应急通风和应急照明。在此之后，应急通风被切断，并继续供电至少5分钟。
【单选题】
城市轨道交通车辆制动模式通常分为常用制动、___快速制动、紧急制动、停放制动。
A. 能耗制动
B. 反接制动
C. 局部制动
D. 保持制动
【单选题】
400V的中压用于___、空调、牵引设备的通风。
A. 继电器
B. 空压机
C. 控制回路
D. 紧急照明
【单选题】
230V中压用于___、LCD显示屏、司机室脚部加热器和维护插座等。
A. 继电器
B. 正常照明
C. 控制回路
D. 紧急照明
【单选题】
变压器将中压转换为低压，低压用于___、应急照明、旅客紧急通风、通讯、控制和数据处理等。
A. 空压机
B. 车门
C. 正常照明
D. 空调
【单选题】
400V交流供给给车辆上不同的交流负载，它来自于___。
A. 低压
B. 辅助逆变器
C. 静止逆变器
D. 制动电阻
【单选题】
列车可供选择的电压如下：1500V直流供给给___系统，它是通过受电弓来传输接触网的电流。
【单选题】
___V直流供给车辆上的直流负载，它来源于由辅助逆变器充电的蓄电池。
A. 1100
B. 110
C. 1500
D. 400
【单选题】
客室门技术参数：供电电压：___VDC。
A. 180
B. 170
C. 120
D. 110
【单选题】
车顶高压受流系统主要由___、熔断器箱、涌浪吸收器（避雷器）、受电弓控制盒等组成。
A. 羊角
B. 受电弓
C. MVB总线
D. 转向架
【单选题】
模式选择器MS给___列车线。
A. 牵引列车线
B. 制动列车线
C. 选择手动模式时，手动编码列车线得电
D. 向后列车线
【单选题】
车辆空调机组控制电源为：___V。
A. 24
B. 110
C. 230
D. 440
【单选题】
车门有效净高度不应低于___m。
A. 1.8
B. 1.9
C. 2.0
D. 2.2
【单选题】
两列车相撞后自动车钩装置能够吸收___km/h的能量。
【单选题】
滑行是指制动力大于粘着力，发生滑行的轮对转速___其它轮对转速。
A. 大于
B. 等于
C. 小于
D. 小于或等于
【单选题】
停放制动采用的是（）缓解（）施加，而气制动采用的是___缓解（）施加。()
A. 充气充气、排气排气
B. 充气排气、排气排气
C. 充气排气、排气充气
D. 排气充气、充气排气
【单选题】
客室空调机组的电源电压是___。
A. DC24V
B. AC380V
C. AC220V
D. DC750V
【单选题】
城市轨道交通车辆的电制动有___和电阻制动两种。
A. 电容制动
B. 电压制动
C. 再升制动
D. 再生制动
【单选题】
按轨道梁与车站结构的布置形式，高架车站结构分为站、桥分离式；___；站、桥合一式。
A. 站、桥结合式
B. 站、桥并列式
C. 站、桥独立式
D. 站、桥悬挂式
【单选题】
钢轨具有最佳的抗弯性能，断面采用“工”字型，钢轨由轨头、轨腰和___组成。
【单选题】
基地(停车场)一般采用的是50kg钢轨___号道岔，侧向过岔速度不超过（）km/h。
A. 7，25
B. 7，20
C. 9，25
D. 9，20
【单选题】
一切设备在任何情况下，不得侵入___限界。
A. 地铁建筑
B. 地铁设备
C. 机车、车辆
D. 线路
【单选题】
机车、车辆无论空、重状态，均不得超出___限界。
A. 地铁建筑
B. 地铁设备
C. 机车、车辆
D. 线路
【单选题】
岛式站台的优点___。
A. 站台利用率低
B. 建筑费用大
C. 容易造成交错混乱
D. 管理集中方便，便于乘客中途折返
【单选题】
侧式站台的优点___。
A. 站台分别利用，利用率高
B. 管理分散不方便
C. 结构简单，建筑费用省
D. 管理集中方便，便于乘客折返
【单选题】
城市轨道交通具有运量大、速度快、___、可靠性强，舒适度高、占地面积少的特点。
A. 造价高
B. 运营费用低
C. 能耗低，污染少
D. 经济效应高
【单选题】
城市轨道交通的闭塞类型有___闭塞、准移动闭塞和移动闭塞。
【单选题】
地下隧道的施工方法主要有明挖法、___、暗挖法和特殊施工法。
A. 盖挖法
B. 盾构法
C. 矿山法
D. 顶进法
推荐试题
【单选题】
He had an ___ at a restaurant in Greek Street at eight.
A. engagement
B. engage
C. contract
D. promise
【单选题】
These companies often encounter many ___ impediments to investment.
A. invisible
B. edible
C. feasible
D. capable
【单选题】
30 percent of reptiles, birds, and fish are currently ___ with extinction.
A. treated
B. threatened
C. endangered
D. threatening
【单选题】
They have a stronger ___ of the importance of economic incentives.
A. appreciation
B. learning
C. concept
D. idea
【单选题】
I believe I am capable of ___ the political consequences accurately.
A. guessing
B. evaluating
C. calculating
D. computing
【单选题】
When he opened the door, he used too much force and ___ the key.
A. trailed
B. varied
C. wicked
D. twisted
【单选题】
I’m very sorry to have ___ you with so many questions on such an occasion.
A. offended
B. impressive
C. bothered
D. interfered
【单选题】
It is sometimes difficult for young people from the countryside to ___ well to life in the big city.
A. suit
B. adapt
C. regulate
D. coordination
【单选题】
Our guide gave us a detailed ___of this painting but we still do not understand.
A. authority
B. interpretation
C. instruction
D. institution
【单选题】
If you want to ___ the wood, cut it with the grain, not against it.
A. break
B. burn
C. split
D. divide
【单选题】
They have a stronger ___ of the importance of economic incentives.
A. appreciation
B. learning
C. conception
D. idea
【单选题】
I believe I am capable of ___ the political consequences accurately.
A. guessing
B. betting
C. calculating
D. computing
【单选题】
30 percent of reptiles, birds, and fish are currently ___ with extinction.
A. treated
B. threatened
C. danger
D. threatening
【单选题】
Workers should occasionally walk around, ___ and avoid prolonged periods at the desk.
A. pull
B. lengthen
C. strain
D. stretch
【单选题】
These companies often encounter many ___ impediments to investment.
A. invisible
B. edible
C. feasible
D. capable
【单选题】
Running a kitchen ___a great deal of discipline and speed.
A. including
B. involving
C. involves
D. composes
【单选题】
He had an ___ at a restaurant in Greek Street at eight.
A. engagement
B. engage
C. contract
D. promise
【单选题】
I think I would have died of ___.
A. embarrass
B. embarrassing
C. embarrassed
D. embarrassment
【单选题】
He saw the publication of this book as an embarrassing invasion of his ___.
A. secret
B. privacy
C. private
D. piracy
【单选题】
The trade imbalance is likely to rise again in 2020. ___ a new set of policy actions will be required soon.
A.
B. ecause B. Nevertheless
C. Hence
D. Therefore
【单选题】
Stratford police refuse to comment ___ whether anyone has been arrested.
A. about
B. on
C. at
D. with
【单选题】
The world will be different, and we will have to be prepared to ___ to the change.
A. adopt
B. adapt
C. accustom
D. adept
【单选题】
The company has launched a campaign of television ___ and leaflets.
A. commercials
B. commences
C. commerce
D. commercialization
【单选题】
The general secretary may ___ the president at official ceremonies.
A. present
B. represent
C. representative
D. stand
【单选题】
He ___ her arms behind her back and clipped a pair of handcuffs on her wrists.
A. dragged
B. pulled
C. stretched
D. twisted
【单选题】
Suppose that when I come back in ten years’ time all these old houses ___ down.
A. will have been pulled
B. will have pulled
C. will be pulling
D. will be pulled
【单选题】
The picture exhibition bored me to death. I wish I ___ to it.
A. have not gone
B. did not go
C. had not gone
D. should not have gone
【单选题】
An investigation was made into the accident ___ fifty people were killed.
A. for that
B. where
C. when
D. in which
【单选题】
___ with the picture, Mary tore it to pieces.
A. Dissatisfying thoroughly
B. Being thoroughly dissatisfied
C. To dissatisfy thoroughly
D. To be thoroughly dissatisfied
【单选题】
She was so angry that she felt like ___ something at him.
A. to throw
B. to have thrown
C. throwing
D. having thrown
【单选题】
If you want to know the train schedule, please ___ at the booking office.
A. acquire
B. inquire
C. request
D. require
【单选题】
My brother’s plans are very ___; he wants to master English, French and Spanish before he is sixteen.
A. arbitrary
B. aggressive
C. ambitious
D. abundant
【单选题】
Housewives who do not go out to work often feel they are not working to their full ___.
A. capacity
B. strength
C. length
D. possibility
【单选题】
Water and air are ___ to human beings. We cannot live without them.
A. harbor
B. function
C. definite
D. essential
【单选题】
Our challenge is to ___ those voters and inspire them to join our cause.
A. motion
B. motive
C. motivate
D. motivation
【单选题】
Harper was a teacher by ___.
A. career
B. occupation
C. profession
D. vocation
【单选题】
The doctor gave me a chest X-ray and ___some medicine for me.
A. prescribed
B. floated
C. drugged
D. drifted
【单选题】
The list is arranged according to the ___ professions of the audience.
A. resolution
B. responsible
C. resource
D. respective
【单选题】
The government is trying to do something to ___ better understanding between the two countries.
A. raise
B. promote
C. heighten
D. increase
【单选题】
According to the American federal government, residents of Hawaii have the longest life ___ : 77.2 years.
A. rank
B. span
C. scale
D. scope
