【单选题】
二氧化碳[干粉]灭火器适用于扑灭___以下的各种电器火灾。___
A. 2000V
B. 1000V
C. 800V
D. 600V
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相关试题
【单选题】
在电气化铁路附近施工、冲洗车辆时，保持水流与接触网带电部分有___以上距离，防止触电事故发生。___
A. 1m
B. 2m
C. 0.5m
D. 2.5m
【单选题】
在客车制动机单车试验时，单车试验器的单车风压应调整到___。___
A. 400kPa
B. 500kPa
C. 600kPa
D. 700kPa
【单选题】
低压是指对地电压在___及以下的电压。___
A. 250V
B. 500V
C. 800V
D. 1000V
【单选题】
电气化铁路开通后，___要对从业人员进行电气化铁路安全知识的培训和考试。___
A. 每月
B. 每季度
C. 每年
D. 每两年
【单选题】
在电气化铁路区段的列检，乘务员及车辆检修设备作业人员携带的任何物件与接触网设备的带电部分应保持___以上距离。___
A. 1m
B. 1.5m
C. 2m
D. 2.5m
【单选题】
轴报器出库前须工作正常，轴与轴同侧温差不大于___℃。___
【单选题】
接触网导线折断下垂搭在车辆上或其他物品与接触接网接触时，列检和乘务人员不要进行处理，应保持___以上距离，同时对现场进行防护，并及时通知有关人员查处。___
【单选题】
电风扇在额定电压下连续工作一小时，测量绝缘电阻不小于___兆欧。___
【单选题】
在电气化线路上，严禁攀登车辆顶部进行___等作业。___
A. 转向架检修
B. 轮对检修
C. 空调机组检修
D. 车钩检修
【单选题】
在电化区段雨天作业人员要穿雨衣，禁止使用___，不准在支柱下、机车、车辆下避雨。___
A. 口罩
B. 浸塑手套
C. 雨伞
D. 胶鞋
【单选题】
采用密接式车钩的旅客列车，因故更换15号过渡车钩与机车连接时应限速运行，运行速度不得超过______
A. 140km/h
B. 160km/h
C. 150km/h
D. 200km/h
【单选题】
运用列车质量鉴定时，列车等级分四档，A级列车为___。___
A. 800～899分
B. 900～1000分
C. 700～799分
D. 600～699分
【单选题】
使用空调机组空气预热器时，须先开启通风机运行；停用时，须先关闭空气预热器，___后方准关闭通风机。___
A. 5min
B. 8min
C. 10min
D. 15min
【单选题】
跨局直通旅客列车每运行一个往返必须安排入库检修，单程运行距离在___及以上的旅客列车，在折返站原则上应安排入库检修。___
A. 4000km
B. 3000km
C. 2000km
D. 1000km
【单选题】
临修客车处理故障的时间原则上不得超过______
A. 12h
B. 24h
C. 36h
D. 48h
【单选题】
第10版《铁路技术管理规程》[铁道部令第29号]自___起施行。___
A. 2006年10月1日
B. 2007年1月1日
C. 2007年4月1日
D. 2006年10月25日
【单选题】
防滑器速度传感器软管最小弯曲半径为___mm。___
【单选题】
列车机车与第一辆车电气连接线的连接与摘解由客列检作业人员负责，无客列检作业人员时，由___负责。___
A. 列检人员
B. 机车乘务员
C. 车辆乘务员
D. 车站人员
【单选题】
KTA-1150型柴油机本身冷却容积为___L。___
【单选题】
下列属于车电机具的是___。___
A. 发电机
B. 排气扇
C. 播音配电盘
D. 电力连接器
【单选题】
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___，但不得超过2辆。___
A. 头部
B. 尾部
C. 中部
D. 任何部位
【单选题】
旅客站台分为低站台、高站台，低站台高度为300mm，500mm，高站台高度为___。___
A. 600mm
B. 800mm
C. 1100mm
D. 1250mm
【单选题】
列车在区间被迫停车后，对于邻线上妨碍行车地点，应按下列规定放置响墩防护：从两方面___处防护，如确知列车开来方向时，仅对来车方面防护。___
A. 不少于300m
B. 不少于800m
C. 不少于1000m
D. 按线路最大速度等级规定的列车紧急制动距离位置
【单选题】
铁路运输企业应严格控制进入铁路的产品质量，建立必要的___。___
A. 监督制度
B. 抽验制度
C. 检验制度
D. 审查制度
【单选题】
《铁路客车运用维修规程》[铁运〔2006〕27号]自___起施行。___
A. 2006年4月1日
B. 2006年5月1日
C. 2006年6月1日
D. 2006年7月1日
【单选题】
客货共线运行速度160km/h＜v≤200km/h铁路，区间双线线间最小距离为___。___
A. 4000mm
B. 4200mm
C. 4400mm
D. 4600mm
【单选题】
电扇的中修周期规定为___年。___
A. 1.5
B. 1
C. 9个月
D. 6个月
【单选题】
铁路行车安全监测设备是保障铁路运输安全的重要技术设备，应具备监测、记录、报警、存取功能，保持其作用良好、准确可靠，并定期进行___。___
A. 维修
B. 计量校准
C. 检查
D. 更换
【单选题】
列车调度电话系统准许___根据需要在区间临时加入通话。___
A. 列检值班员
B. 代值乘运转车长的车辆乘务员
C. 车辆乘务员
D. 其他人员
【单选题】
在干线及繁忙干线上，须设配智能跟踪装置的红外线轴温探测网，轴温探测站的间距一般按___设置。___
A. 20km
B. 30km
C. 40km
D. 50km
【单选题】
低压电器是指工作在交流___伏以下电路的电器。___
A. 400
B. 380
C. 220
D. 1000
【单选题】
救援列车、救援列车人员的出动均由铁路局调度所机车调度员发布事故救援出动的调度命令，列车调度员组织并确保救援列车在___内开行。___
A. 15min
B. 20min
C. 25min
D. 30min
【单选题】
BY-2型逆变器在恒压６０ｖ运用２ｈ，其三极管双管对比温差不大于___度。___
【单选题】
最高运行速度超过120km/h客车的轮对装车前，应进行___。___
A. 动平衡试验
B. 跑合试验
C. 外观检查
D. 制动盘制动试验
【单选题】
２５T型空调客车的一辆车上共安装___个防滑装置的速度传感器。___
【单选题】
使用计算机、传真机、无线传送系统发布调度命令时，命令接受人员确认无误后应___。___
A. 汇报领导
B. 通知相关人员
C. 等待下个命令
D. 及时反馈回执
【单选题】
旅客列车中乘坐旅客的车辆，与机车、货车相连接的客车端门及编挂在列车尾部的客车后端门须______
A. 打开
B. 加锁
C. 拆除
D. 随意开关
【单选题】
列车在始发前___，须进行预冷作业。___
A. 10min
B. 30min
C. 1h
D. 1.5h
【单选题】
车辆轮对的内侧距离为___，其允许偏差为±3mm。___
A. 1343mm
B. 1353mm
C. 1363mm
D. 1373mm
【单选题】
车辆发生故障，距离接触网带电部分不足___时，必须待接触网停电并接地后，方可进行处理。___
A. 1m
B. 1.5m
C. 2m
D. 2.5mm
推荐试题
【单选题】
15.Millie does __________ that many people are thankful to her．
A. such an important and helpful job B. so important and helpful work
C. a very important and helpful job D. such an important and helpful work
【单选题】
16. I think eating more vegetables is good _______ our health.
—Yes, I agree _______ you.
A. at, to B. for, with C. to, to D. for, to
【单选题】
17. I often go on holiday with my parents _____ summer.
A. in B. at C. on D. of
【单选题】
18. I called you at 4:00 yesterday afternoon, but nobody answered.
Sorry, I ______ with my friends at that time.
A. had swum B. swam C. would swim D. was swimming
【单选题】
19.––Who is on the playground? ---__________．
A. Never B. None C. No one D. A lot
【单选题】
20. The schoolboy ______ a blind man cross the street yesterday.
A. helps B. helped C. will help D. has helped
【单选题】
21. —The 2010 World Expo which will last 184 days will be held in Shanghai on May 1st.
—________exciting news! We shall try our best to support it.
A. How B. How an C. What D. What an
【单选题】
22. They preferred ______ in bed rather than _____ horses．
A. to lie; to ride B. lying; riding C. lying; ride D. to lie; ride
【单选题】
23. —What was Jim wearing at the party?
— Nothing _______. He was in his usual shirt and jeans.
A. special B. simple C. important D. interesting
【单选题】
24. The 2016 Olympic Games ________ in Brazil. Would you like to go there?
Maybe, if possible.
A. are held B. will be held C. were held D. have been held
【单选题】
25. — David, look at the man in white over there．Can you tell me _______ ?
—He is a doctor．
A. who is he B. who he is C．what does he do D. what he does
【单选题】
( ) 26.With help from a Mr. H, you can__________.
A. stop wearing your watch B. get new books and objects
C. finish your homework on time D. know when parents or teachers are near
【单选题】
( ) 27. A PENGO WATCH CONTROL can help you to ______________.
A. repair your TV B. put away your books and objects
C. become a James Bond D. get a daily weather report
【单选题】
( ) 28. You can get your Mr. H for___________.
A. $299 B. $499 C. $199 D. $99
【单选题】
( ) 29. When was canned food invented?
A. In 1870. B. In 1810. C. In 1902. D. In 1926.
【单选题】
( ) 30. After the trip to the Arctic, Clarence Birdseye invented ____________.
A. canned food B. can openers
C. frozen food D. air conditioning
【单选题】
( ) 31. Changes in weather _____________ in Willis Carrier's company.
A. helped to keep food B. made rooms comfortable
C. caused health problems D. hurt printing paper
【单选题】
( ) 32. According to the passage, which of the following may lead to inventions?
A. People's needs. B. Public support.
C. Modern technology. D. Practical suggestions.
【单选题】
( ) 33. What is the writer's main purpose（目的）in writing this passage？
A．To tell the readers his life story．
B．To tell people what kind of person his father was．
C．To tell the readers what present he got from his father．
D． To let people know how poor he was．
【单选题】
( ) 34. Why did the father not ask his son not to do this and do that？
A．Because he felt quite confident of his son．
B．Because he was born from a poor family．
C．Because he was a man of few words．
D．Because he didn't want to be much too strict with his son．
【单选题】
( ) 35. What would someone learn from this passage？
A．How to live by oneself． B．How to stand on one's own feet．
C．What a good father should do． D．What the self-important is like．
【单选题】
( ) 36. What may be the proper Chinese for the underlined part in the passage？
A．闲暇时光 B．学费 C．精神空虚 D．经济不足
【单选题】
( ) 37. The Chinese Yellow Sea Wetlands are in the _______ of China．
A．south B．east C．west D．north
【单选题】
( ) 38. Usually the weather in the wetlands is _______．
A．hot B．pleasant C．cold D．dry
【单选题】
( ) 39. The World Wetlands Day is on _______．
A．February 2 B．June 25 C．April 22 D．March
【单选题】
( ) 40. We must protect wetlands because _______．
A．they are home for wildlife B．they can prevent flood
C．they can offer food to the animals and birds D．all of the above
【单选题】
) 1. —Is it far from here to the bank?
—Not very, only________．
A. 20 minute’s walk B. 20 minutes walk
C. 20 minutes’ walk D. 20 minutes’ walks
【单选题】
2. — After discussing, the students ________ some good ideas to work on the project.
— Thats great!
A. put up B. set up C. caught up with D. came up with
【单选题】
3. Yesterday Tommy walked past my table and ______ my bowls and dishes.
He should be careful next time.
A. knocked off B. took off C. showed off D. turned off
【单选题】
4.We don’t have enough nurses to look after patients．At least ___ nurses are needed．
A. ten another B. more ten C. another ten D. other ten
【单选题】
5. — Zhao Rui, it’s said that many famous singers will come to Yangzhou on April 18th. How about watching the evening show there?
—________! Let’s ask Huang Tao to go with us.
A. Best wishes B. Sounds great C. Good luck D. That’s OK
【单选题】
6.—Hello! This is Henry Speaking．I’d like to speak to your father．
—Sorry, he has Shanghai．
A. been in B. been to C. come to D. gone to
【单选题】
7. — It’s difficult for the village children to cross the river for school．
— I think a bridge ______ over the river．
A. was built B. is being built C. has been built D. should be built
【单选题】
8. —Where would you like to go, Jinan or Qufu?
— ．I only want to go to Qingdao．
A. Each B. Either C. Neither D. All
【单选题】
9 — The documentary A Bite Of China II is quite popular around China recently. How do you like it? ______.
A. I think so B. Pretty good C. Its my pleasure D. All right
【单选题】
10. There are three English-books on the shelf, but ______ of them is mine.
A. both B. neither C.all D. none
【单选题】
11. When the parents arrived at the hall, the students _______ their projects.
A. have finish B. finished C. had finished D. are finishing
【单选题】
12. This week, the _______ seems to change every day: one day is hot; the next day is cold.
A. time B. weather C. season D. way
【单选题】
13. He never does his work _______ Mary.
A. as careful as B. so careful as C. carefully as D. as carefully
【单选题】
14. — Can he jump high?
— Yes, he ______. He is a good high jumper.
A. must B. need C. can D. shall
