【单选题】
(31488)KTA19—G2型柴油机发生超速时，在保护功能电路中，可断开___两线，切断电磁阀电路，从而使柴油机断油停机。
A. 1-5；1-6
B. 1-5；1-7
C. 1-7；1-8
D. 1-7；1-9
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相关试题
【单选题】
(31489)KTA19—G2型柴油机转速超过1728r/min时，超速保护断开1-5与1-7两线，但超速报警不灯亮，有可能是___线也断开了。
A. 1-6
B. 1-8
C. 1-9
D. 1-11
【单选题】
(31490)线路发生断路故障后，首先应检查___是否熔断。
A. 熔断器
B. 线路
C. 开关损坏
D. 导线接头
【单选题】
(31491)设备和元器件故障可分为：___、不能运行、电气击穿、性能变劣。
A. 断线
B. 极性接反
C. 缺一相电源
D. 过热烧毁
【单选题】
(31492)配电控制屏故障可能是电源故障，也可能是电路故障或者是设备和___故障。
A. 缺电源
B. 短路
C. 元器件
D. 断线
【单选题】
(31493)通常排除故障时，所采用的步骤大致可分为：症状分析一设备检查 ___一故障排除排除后性能观察。
A. 元器件损坏或失灵
B. 确定故障点
C. 更换元器件
D. 设备分析
【单选题】
(31494)在处理车体配线故障中，常用的测量方法有：（1）电压分阶段测量法；（2）电阻分阶段测量法；（3）___
A. 短接法
B. 逐步排除法
C. 直接检查法
D. 电流测试法
【单选题】
(31495)处理线路短路故障时，常用的测试工具和仪表有校验灯、测电笔、___、钳形电流表、兆欧表等，
A. 万用表
B. 压力表
C. 功率表
D. 直尺
【单选题】
(31496)车体配线短路时，一般采用断电检查___法。
【单选题】
(31497)当发电车控制电路发生断路故障，无DC24V电源时，应检查___字头线号。
【单选题】
(31498)当柴油机油压还没有建立时，1-9线与1-11线间油压开关没有接通，电磁阀只能通过___接通。
A. A-B
B. C-D
C. A-D
D. A-C
【单选题】
(31499)康明斯发电车所使用的lFC5356发电机采用可控相复励，可控是指使用了___元件。
A. AVR
B. L1
C. T6
D. F1、F2
【单选题】
(31500)康明斯发电车1FC5356发电机中的AVR与静止整流模块是通过___接线端子发生联系的。
A. 1、5
B. 20、21
C. 17、18、19
D. F1、F2
【单选题】
(31501)康明斯发电车1FC5356发电机中的AVR上有三个调节旋钮，其中调节电压整定值的是___。
【单选题】
(31502)接线表应与___相配合。
A. 电路图
B. 逻辑图
C. 功能图
D. 接线图
【单选题】
(31503)工作接地导线一般用___颜色标识。
【单选题】
(31504)凡是可以在车下组成线束的导线，下线后应穿上线号再按需要扎成线束，并符合下列要求___
A. 线束中导线任意扭曲
B. 每间隔500mm～600mm至少捆扎一次
C. 线束中引出导线的位置应准确，长度适中
D. 穿入线管或线槽的线束，外径面积之和不应超过线管、线槽内孔横截面积的50%
【单选题】
(31505)___是教学大纲要求熟悉和掌握的内容。
A. 知识点
B. 重点
C. 难点
D. 出题点
【单选题】
(31506)___是讲义的主体部分。
A. 教学内容
B. 案例分析
C. 专题讨论
D. 课后思考题
【单选题】
(31507)下面哪项不属于教学设计___。
A. 教学环境
B. 教具
C. 教学内容
D. 实践能力培训
【单选题】
(31508)以下教案和讲义的描述正确的是___。
A. 一般教案篇幅长于讲义；
B. 在内容上，讲义涉及的是组织性项目，教案涉及的是知识性项目；
C. 教案和讲义是决定与被决定的关系；
D. 讲义的思路形成受教学过程的管理逻辑支配，教案的思路形成受教学过程的知识逻辑支配。
【单选题】
(31509)下面哪种不属于教学的基本组织形式___。
A. 课堂教学
B. 现场教学
C. 专题讲座
D. 自学
【单选题】
(31510)教案必须在“四备”的基础上编写，以下哪个不属于“四备”___。
A. 备大纲
B. 备教材
C. 备学生
D. 备讲义
【单选题】
(31511)在带7KA8线圈的康明斯发电车控制电路中，若需分别检测发电车I、II路干线绝缘，只需进行___操作后即可进行检测。
A. 断开24V电源总开关7QFl
B. 断开lKA9、3KA9线圈电路中的保险
C. 断开所有主开关
D. 取下I、II路干线中的保险
【单选题】
(31512)兆欧表有三个接线端，分别标有L、E和G字母，测量电缆的对地绝缘电阻时其屏蔽层应接___。
【单选题】
(31513)使用直读式绝缘检测表，检测客车绝缘是否接地或绝缘是否合格，应将转换开关旋至___。
A. 检测档
B. R×1kΩ档
C. R×l0kΩ档
D. 任意档
【单选题】
(31514)为保障人身安全，在正常情况下，电气设备的安全电压规定为___以下。
A. 24V
B. 36V
C. 48V
D. 110V
【单选题】
(31515)遇有电气火灾，不能使用水或___灭火器。
A. 二氧化碳
B. 干粉
C. 1211
D. 泡沫
【单选题】
(31516)电气设备采用保护接地，还是保护接零主要取决于___。
A. 低压电网的性质
B. 电气设备的额定电压
C. 系统的运行方式
D. 系统的中性点是否接地、低压电网的性质及电气设备的额定电压
【单选题】
(31517)柴油机启机前检查描述正确的是___
A. 柴油机启机前应检查柴油机柴油、机油、冷却水状态。
B. 柴油机启机前应检查柴油机气门间隙。
C. 柴油机启机前应检查柴油机喷油器压力。
D. 柴油机启机前应清洁空气滤清器。
【单选题】
(31518)___人员可独立操作柴油机。
A. 任何
B. 客运
C. 车辆
D. 经柴油机专业培训合格
【单选题】
(31519)以下操作规程的描述正确的是___
A. 应根据操作项目的重要性逐一编写。
B. 应根据操作步骤的顺序逐一编写。
C. 只需编写操作步骤，不需编写操作方式。
D. 专业人员可以不依照操作规程操作设备。
【单选题】
(31520)下列哪项工作不属于发电车乘务员作业范畴___。
A. 出退乘签到。
B. 发电车日常维护保养。
C. 发电车停机前逐辆卸除车厢负载。
D. 定时进入机房巡视检查。
【单选题】
(31521)列车终到后，因特殊情况，需要继续供电时，由有关部门或单位与车辆段或发电车工作人员协商。但不得超过___分钟。
【单选题】
(31522)发电车起机后，发电车乘务员应___，方可向列车供电。
A. 检测列车绝缘正常
B. 电力连接线连挂良好
C. 与空调乘务员办理供电手续
D. 检查发电车燃油充足
【单选题】
(31523)发电车出库质量标准要求冷却水位应在___以上
A. 1/2
B. 2/3
C. 3/4
D. 4/5
【单选题】
(31524)发电车出库质量标准要求24V启动电池电压，在机组启动过程中不得低于___。
A. 24V
B. 22V
C. 20V
D. 18V
【单选题】
(31525)发电车逆功率继电器定期检查每年不少于___。
【单选题】
(31526)发电车冷却间应配备1具___灭火器。
A. 2公斤
B. 4公斤
C. 25公斤
D. 35公斤
【单选题】
(31527)以下说法错误的是___。
A. 发电车内严禁吸烟。
B. 发电车严禁直接与燃煤锅炉取暖车辆连挂。
C. 发电车严禁放置棉纱。
D. 发电车严禁用水冲刷地板。
【单选题】
(31528)发电车烟火报警器___必须进行全功能检查。
A. 每次入库
B. 每月
C. 每季
D. 每半年
推荐试题
【单选题】
By the late 7th century, became the dominant religion in England.
A. A. Celtic Christianity
B. B. Anglo-Saxon Christianity
C. C. Germanic Christianity
D. D. Roman Christianity
【单选题】
Westminster Abbey was built at the time of .
A. A. St. Augustine
B. B. Edward the Confessor
C. C. William the Conqueror
D. D. Alfred the Great
【单选题】
The marked the establishment of feudalism in England.
A. A. Viking invasion
B. B. signing of the Magna Carta
C. C. Norman Conquest
D. D. Adoption of common law
【单选题】
The end of the Wars of the Roses led to the rule of .
A. A. the House of Valois
B. B. the House of York
C. C. the House of Tudor
D. D. the House of Lancaster
【单选题】
The direct cause for the Religious Reformation was King Henry VIII’s effort to .
A. A. divorce his wife
B. B. break with Rome
C. C. support the Protestants
D. D. declare his supreme power over the church
【单选题】
The English Civil War broke out in 1642 between .
A. A. Protestants and Puritans
B. B. Royalists and Parliamentarians
C. C. nobles and peasants
D. D. aristocrats and Christians
【单选题】
was passed after the Glorious Revolution.
A. A. Bill of Rights
B. B. Act of Supremacy
C. C. Provisions of Oxford
D. D. Magna Carta
【单选题】
The Industrial Revolution was aThe Industrial Revolution was accomplished in Britain by the middle of the century.
A. A. 17th
B. B. 18th
C. C. 19th
D. D. 20th
【单选题】
Britain faced strong challenges in its global imperial dominance by the beginning of the century.
A. A. 17th
B. B. 18th
C. C. 19th
D. D. 20th
【单选题】
As a revising chamber, the House of Lords is expected to the House of Commons.
A. A. rival
B. B. complement
C. C. criticize
D. D. inspect
【单选题】
The British government is characterized by a division of powers between three of the following branches with the exception of the .
A. A. judiciary
B. B. legislature
C. C. monarchy
D. D. executive
【单选题】
The importance of the British monarchy can be seen in its effect on .
A. A. passing the bills
B. B. advising the government
C. C. political parties
D. D. public attitude
【单选题】
British Cabinet works on the principle of .
A. A. collective responsibility
B. B. individual responsibility
C. C. defending the collectivism
D. D. defending the individuals
【单选题】
The main duty of the British Privy Council is to .
A. A. make decisions
B. B. give advice
C. C. pass bills
D. D. supervise the Cabinet
【单选题】
is the first African-American winner of the Nobel Prize for Literature.
A. A.Ralph Ellison
B. B. Tony Morrison
C. C. Richard Wright
D. D. James Baldwin
【单选题】
Of the following writers, is Not a Nobel Prize winner.
A. A. Alice Walker
B. B. Ernest Hemingway
C. C. William Faulkner
D. D. Eugene O’Neil
【单选题】
Of the following books, is NOT written by Ernest Hemingway.
A. A. The Sun Also Rises
B. B. The Sound and the Fury
C. C. A Farewell to Arms
D. D. For Whom the Bell Tolls
【单选题】
F. Scott Fitzgerald’s finest novel is , and its theme is about
A. A. The Great Gatsby, the American Dream
B. B. Tender is the Night, love
C. C. Tales of the Jazz Age, the loss of oneself
D. D. The Beautiful and the Damned, the evil of human nature
【单选题】
Of the following writers, is NOT included in the group of naturalists.
A. A. Stephen Crane
B. B. Frank Norris
C. C. Theodore Dreiser
D. D. Herman Melville
【单选题】
Of the following, is NOT characteristic of Mark Twain’s works.
A. A. colloquial speech
B. B. a sense of humor
C. C. a realistic view
D. D. an idealistic view
【单选题】
Of the following, is considered Herman Melville’s masterpiece.
A. A. The Last of the Mohicans
B. B. The Legend of Sleepy Hollow
C. C. Moby Dick
D. D. Daisy Miller
【单选题】
Of the following, is NOT Nathaniel Hawthorne’s work.
A. A. The Scarlet Letter
B. B. The House of the Seven Gables
C. C. The Marble Faun
D. D. Nature
【单选题】
is regarded as “the father of American literature”.
A. A. James Fennimore Cooper
B. B. Ralph Waldo
C. C. Thomas Jefferson
D. D. Washington Irving
【单选题】
Of the following writers, are from the Colonial and Revolutionary Periods.
A. A. Benjamin Franklin & Edgar Ellen Poe
B. B. Edgar Ellen Poe & Jonathan Edwards
C. C. Benjamin Franklin & Jonathan Edwards
D. D. Edgar Ellen Poe & Washington Irving
【单选题】
The National Day of the United States falls on .
A. A. June 4th
B. B. July 4th
C. C. June 14th
D. D. July 14th
【单选题】
Of the following, is NOT among the three major radio and TV networks in America.
A. A. the National Broadcasting System (NBS)
B. B. the Public Broadcasting Service (PBS)
C. C. the Columbia Broadcasting System (CBS)
D. D. the American Broadcasting System (ABS)
【单选题】
is sold especially to the upper or upper-middle class and it has a reputation for its serious attitude and great bulk.
A. A. The Washington Post
B. B. The New York Times
C. C. Los Angeles Times
D. D. New York Daily News
【单选题】
Of the following universities, has NOT cultivated any American President yet.
A. A. Harvard University
B. B. Massachusetts Institute of Technology
C. C. Princeton University
D. D. Yale University
【单选题】
To get a bachelor’s degree, all undergraduate students are required to do the following except .
A. A. attending lectures and completing assignments
B. B. passing examinations
C. C. working for communities
D. D. earning a certain number of credits
【单选题】
Of the following, is NOT the responsibility of the board of trustees in U. S. institutions.
A. A. choosing the president
B. B. establishing policies for administrators and faculty
C. C. approving budget and other financial project
D. D. decide which student to enroll
【单选题】
Of the following, are NOT among the categories of American higher education.
A. A. universities and colleges
B. B. research institutions
C. C. technical institutions
D. D. community colleges
【单选题】
Higher education in the United States began with the founding of
A. A. Yale University
B. B. Harvard University
C. C. Princeton University
D. D. New York University
【单选题】
Of the following subjects, are NOT offered to elementary school students.
A. A. mathematics and languages
B. B. politics and business education
C. C. science and social studies
D. D. music and physical education
【单选题】
Formal education in the United States consists of , secondary and higher education.
A. A. kindergarten
B. B. public
C. C. elementary
D. D. private
【单选题】
At present, U. S. exports account for of the world’s total.
A. A. 10%
B. B. 15%
C. C. 20%
D. D. 25%
【单选题】
is not one of the three giants in American automobile industry.
A. A. Ford
B. B. General Motors
C. C. Chrysler
D. D. American Motors
【单选题】
The following statements are all true except .
A. A. Agribusinesses reflect the big, corporate nature of many farm enterprises.
B. B. Agribusinesses maintain a balanced trade pattern between agricultural imports and exports.
C. C. Agribusinesses range from one-family corporations to multinational firms.
D. D. Agribusinesses include a variety of farm businesses and structures.
【单选题】
About of American crops are for export.
A. A. half
B. B. one third
C. C. one fourth
D. D. one fifth
【单选题】
President Johnson tried to build a “Great Society” by introducing various programs like the following except .
A. A. Medicare
B. B. Food Stamps
C. C. Education Initiatives
D. D. Unemployment Pension
【单选题】
The following inventions took place during the “second indThe following inventions took place during the “second industrial revolution” except .
A. A. typewriter
B. B. telephone
C. C. electric light
D. D. refrigerator
