【单选题】
康明斯KTA-19G2柴油机中，冷却水滤清器是___。
A. LF670
B. LF777
C. WF2054
D. FF105
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相关试题
【单选题】
拆卸发电车蓄电池，宜___。
A. 先拆负极接线，后拆正极接线
B. 先拆正极接线，后拆负极接线
C. 正负极接线同时拆卸
D. 先拆正极或负极接线均可
【单选题】
康明斯发电车中，当柴油机转速高于___时，将发生超速停机报警保护。
A. 1500r/min
B. 1725r/min
C. 1800r/min
D. 2000r/min
【单选题】
柴油机润滑系统中的机油呈灰白混浊时，说明机油中混有___。
【单选题】
康明斯发电车中，当柴油机水温高于___时，将发生高水温报警。
A. 85℃
B. 90℃
C. 95℃
D. 100℃
【单选题】
发电车乘务员在库内加油时，必须确定所加燃油的___合乎要求。
A. 油密度、油颜色
B. 油重量、油气味
C. 油质、油标号、油位
D. 油燃点、油标号
【单选题】
折返站库内作业，必须要进行的作业是___。
A. “B”级保养
B. “C”级保养
C. 给电机轴承注润滑脂
D. 检查柴油机油水电
【单选题】
柴油机断电停机，须让柴油机怠速运行___分钟。
A. 1～3
B. 3～5
C. 5～7
D. 7～9
【单选题】
相对湿度小于60%时，用500V兆欧表测试Ⅰ、Ⅱ路干线绝缘，发电车干线绝缘不低于___MΩ。
【单选题】
电力连接线座的检修标准，下列不合乎标准的是___。
A. 安装牢固
B. 无裂损
C. 密封作用良好
D. 大线插拔紧固
【单选题】
发电车中铅蓄电池的充电电流一般不超过___。
A. 10A
B. 20A
C. 30A
D. 40A
【单选题】
康明斯KTA-19G2柴油机自带的充电发电机额定输出电压为___。
A. 24V
B. 26V
C. 28V
D. 48V
【单选题】
三角带的截面夹角是___。
A. 38°
B. 36°
C. 34°
D. 40°
【单选题】
每次启动康明斯柴油机前，均需检查柴油机的机油油位，机油油位在___时，是标准的。
A. 油标尺的“L”刻线以下
B. 油标尺的“L”刻线以上
C. 油标尺的“H”刻线以上
D. 油标尺的“L与H”刻线之间
【单选题】
康明斯柴油机正常运转后，其冷却水温度的范围是___。
A. 74℃以下
B. 74℃～84℃
C. 84℃～94℃
D. 74℃～90℃
【单选题】
为保护废气涡轮增压器，康明斯柴柴油机停机时需将水温、油温降到___以下。
A. 75℃
B. 60℃
C. 40℃
D. 80℃
【单选题】
当柴油机因为冷却风机故障而引起水温高时，正确的处理方法是___。
A. 将冷却风机置于自动位
B. 将冷却风机置于手动高速位
C. 卸载更换机组供电，在不用该机供电的情况下积极查明并处理冷却风机故障
D. 不用查明原因，回库填写“车统-181”就行了
【单选题】
发动机不易起动，着火后又渐渐熄火，一般属___故障。
A. 点火系
B. 供油系
C. 起动系
D. 机械
【单选题】
___可能造成KTA-19G2型柴油机起动马达无法运转。
A. 调速控制箱内直流短路
B. 执行器线脱落
C. 电磁截流阀断电
D. 柴油中进空气
【单选题】
关于柴油机发生“游车”的各种原因中不正确的是___。
A. 调速器反馈系统故障
B. 油中有空气
C. 调速器输出轴和油泵齿条连接不当
D. 油量调节杆松动
【单选题】
康明斯KTA19-G2型柴油机有怠速无高速，如果仅是因为PT泵执行器故障，正确的处理方法是___。
A. 清洗执行器或更换执行器
B. 调换执行器的接线
C. 给执行器加48V电压
D. 给PT泵排空气
【单选题】
发电车在运行中，交流燃油泵自动位不工作，但手动位正常工作，其原因正确的是___。
A. 上油箱的浮球液位控制器，在油位低位时，不能接通燃油泵电机接触器控制电路
B. 上油箱的浮球液位控制器，在油位低位时，不能断开燃油泵电机接触器控制电路
C. 燃油泵电机接触器主电路缺相
D. 燃油泵电机热继电器过载保护
【单选题】
更换机油的放油螺塞是装在油底壳的___。
【单选题】
发电车的备用机油箱的容量是___L。
A. 80
B. 90
C. 100
D. 110
【单选题】
柴油机启动转速太低，下列___不是其中原因之一。
A. 启动电池容量不够
B. 气温太低
C. 启动操作技术欠妥
D. 气门间隙有误差
【单选题】
发电车柴油机组正常运行时，如果出现游车，下列___不是其中原因之一。
A. 上油箱缺油
B. 燃油系统中有空气
C. 执行器故障
D. 控制系统电压低于19V
【单选题】
发电车柴油机供油量不足，下列___不是主要原因之一。
A. 停车电磁阀开度不够
B. 执行器滑卡
C. 上油箱油位过低
D. 喷油器故障
【单选题】
柴油机进气系统漏气，不会引起下列___故障现象。
A. 功率下降
B. 冒黑烟
C. 带不起大负载
D. 超速
【单选题】
柴油机排气系统漏气，会引起下列___故障现象。
A. 柴油机怠速时，有间隙性的异响
B. 超速
C. 冒黑烟
D. 冒白烟
【单选题】
柴油机出现“飞车”，下列不正确的处理方法是___。
A. 关掉进油阀，切断燃油进油管
B. 迅速堵住空气滤清器进气口，切断进气
C. 关掉配电屏上的停机开关
D. 有减压装置的柴油机，将减压手柄推到减压位，打开气门，使缸内空气减压
【单选题】
发电车运行途中柴油机突然停机，下列检查方法不正确的是___。
A. 检查24V电源系统
B. 检查柴油机操纵盘的报警指示灯
C. 检查上油箱油量
D. 检查冷却塔
【单选题】
柴油发电机组一般采用___直流电动机作为起动电机。
【单选题】
康明斯发电车冷却风机手动位时，若出现水温超过88℃，风机仍未自动启动，这一故障最大可能性是___。
A. 风机手动启动按钮损坏
B. 85℃水温开关无法闭合
C. 65℃水温开关无法断开
D. KA8线圈无法自锁
【单选题】
发电车控制屏上，上油箱油位显示仪采用___V电源。
A. 24
B. 48
C. 220
D. 380
【判断题】
运用发电车启机后，可由非专业人员看管和监护。
【判断题】
为保证发电车内清洁，可以用水冲刷地板。
【判断题】
当运用发电车出现备用不足时，定检过期的发电车可以再上线运行一段时间。
【判断题】
列车运行途中因发电机故障或长时间停留，车辆乘务员可酌情减少用电负荷。
【判断题】
15W/40CD级机油能支持起机的最低温度是零下15℃.
推荐试题
【单选题】
Tom is a book lover. ______ likes reading very much.
A. He B. She C. You D. It
【单选题】
—May I listen to the music here, Mr. White?
—Sorry, you’d better it like that．
A. not to do B. not do to
C. dont do D. not do
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3.—Did you have a good time at Lauras birthday party?
— Yes, indeed. Its several years ________ I enjoyed myself so much.
A. when B. before C. since D. that
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4. —___________ is the Summer Palace from here?
About three kilometers away. You can take the No. 35 bus.
A. How long B. How far C. How often D. How much
【单选题】
5. I was looking for a birthday gift for my mother, but I couldnt find ______ suitable.
A. anything B. something C. nothing D. everything
【单选题】
6. A friend of my ____ and I are going to visit_______ next week．
A. father; Browns B. father's; Browns
C. father; the Browns D. father's; the Browns
【单选题】
7. She ______ very hard since she came to our school.
A. studies B. has studied C. is studying D. studied
【单选题】
8. — Who will send you to the new school, your mom or your dad?
— _______. Ill go there by myself.
A. Both B. Either C. Neither D. None
【单选题】
9.—Well do what we can ____English well this term．
—It’s high time for you to work hard．
A. study B．to study C. be studied D. be studying
【单选题】
10. —I’m going to Flower Bookstore. Could you tell me ______?
— Sorry, I don’t know. I’m new here.
A. where it is B. where was it C. where is it D. where it was
【单选题】
11. How do you like the dishes, Eric?
— Fantastic! Nothing tastes ________.
A. nice B. better C. terrible D. worse
【单选题】
12. ______ Lin Feng has to work late, she always wears a smile on her face.
A. Because B. If C. Until D. Though
【单选题】
13.You can save money _______ you buy cheaper things.
A. before B. unless C. if D. until
【单选题】
14. We will have a _________ holiday after the exam．
A. two-month B. two month’s C. two month D. two-months
【单选题】
15. —We will build an underground in Xuzhou before 2015．
— Wow, _______! Will it pass our place?
A. what an excited news B. how excited the news is
C. what exciting news D. how exciting
【单选题】
16. — Emily, here’s a dictionary．I hope it will help you in some way．
— Thank you．It’s ________ what I need．
A. almost B. still C. only D. just
【单选题】
17. —Oh．I’m hungry．Mum, can I have the hamburger on the plate?
—No．It tastes ．
A. terribly B. terrible C. good D. well
【单选题】
18. —We can invite our teachers to the farewell party next Saturday.
—Yes, ______? I’ll call them at once.
A. what for B. what C. why not D. why
【单选题】
19.You can ________ ask the old man to move away to any other place because he has lived ________ here for at least sixty years．
A. hardly; alone B. hard; alone
C. hardly; lonely D. hardly; lonely
【单选题】
20.—I’m going back to see my grandparents this weekend．
—________．
A. It’s very nice of you B. You’d better hurry
C. Say goodbye to them D. Give my best wishes to them
【单选题】
21.—Why not take ____ umbrella with the sign “Made in China”? It is useful.
—What _______ good advice it is!
A. an; a B. a; a C. an; \ D. \; a
【单选题】
22. —Do you know the boy________ is sitting next to Peter?
— Yes. He is Peter’s friend. They are celebrating his ________ birthday.
A. who; ninth B. that; ninth C. /; ninth D. which; ninth
【单选题】
23. It was dark, ______ I couldnt see what was happening.
A. or B. though C. but D. so
【单选题】
24.—You can use MSN to talk with Vivien on the Internet.
—I know. But can you tell me ________?
A. what I can use it B. when I can use it
C. why can I use it D. how can I use it
【单选题】
25. _______ are you going to the School Uniform Exhibition, Amy ?
To learn about different styles of school uniform.
A. What B. Where C. Which D. Why
【单选题】
( ) 26. Where does the writer of "The little Prince" come from?
A．England． B．France． C．America． D．China．
【单选题】
( ) 27. What does the prince do after the fox tells him a secret?
A．He cares more about a flower and a sheep．
B．He meets many more strange adults on other planets．
C．He realizes his love for the rose and he goes back to his planet．
D．He discovers interesting things such as a snake, other roses and a fox
【单选题】
( ) 28. What does "The little Prince" mainly talk about? It' s about _________．
A．the adult world B．the planet B -612
C．a rose and a fox D．the adventure of a young prince
【单选题】
( ) 29. 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】
( ) 30. 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】
( ) 31. 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】
( ) 32. 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】
( ) 33. Why did Natalie Smith pay for the six cars behind her?
A. She had seven tickets.
B. She hoped to please others.
C. She knew the car drivers well.
D. She wanted to show kindness.
【单选题】
( ) 34. Judy Foreman copied down the phrase because she ___ .
A. thought it was beautifully written
B. wanted to know what it really meant
C. decided to write it on a warehouse wall
D. wanted her husband to put it up in the classroom
【单选题】
( ) 35. Who came up with the phrase according to the passage?
A. Judy Foreman. B. Natalie Smith. C. Anne Herbert D. Alice Johnson.
【单选题】
( ) 36. What can we infer from the last paragraph?
A. People should practice random kindness to those in need.
B. People who receive kindness are likely to offer it to others.
C. People should practice random kindness to strangers they meet.
D. People who receive kindness are likely to pay it back to the giver.
【单选题】
( ) 37.The greatest river for navigation is ___________.
A. the Nile B. the Amazon C. the Mekong D. the Mississippi
【单选题】
( ) 38. From a dam, people can use the water for ___________.
A. keeping the rivers clean B. only making electricity
C. irrigation and making electricity D. washing clothes
【单选题】
( ) 39. The water in the river is polluted because of _____________.
A. people's drinking water too much B. people's swimming in the river too much
C. chemicals and other materials D. people's building a dam across a river
【单选题】
( ) 40. The best title of the passage is ___________.
A. Rivers in Cities B. The importance of Rivers
C. Transportation D. Natural Resources
