【单选题】
ZPW-2000R型无绝缘轨道电路在2600Hz区段补偿电容参数满足的指标及范围是 ___ 。
A. 28uF±1.4uF
B. 30uF±1.5uF
C. 33uF±1.65uF
D. 40uF±2.0uF
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相关试题
【单选题】
微机、微电子交流记数电码轨道电路在调整状态下,向轨道发送稳定交流电源,接收变压器输入侧的交流电压或电气化区段滤波器输出电压,应为 ___ 微电子交流计数的应不小于5V. 。
A. 3.9V～7.9V
B. 3.9V～8V
C. 3.9V～8.1V
D. 3.9V～9V
【单选题】
ZPW1-18型无绝缘移频自动闭塞,电气化区段,在最大牵引电流为1000A,最大不平衡牵引电流为 ___ 。
A. 100A
B. 200A
C. 250A
D. 300A
【单选题】
ZPW1-18型无绝缘移频自动闭塞,区间发送盒报警电压 ___。
A. DC20.0V～27.0V
B. DC30.0V～35.2V
C. AC30.0V～35.2V
D. DC35.2V～40.1V
【单选题】
ZPW1-18型无绝缘移频自动闭塞,区间发送盒移频功出电压 ___ 。
A. DC3.0V±0.5V
B. AC3.4V±0.4V
C.
D. C3.4V±0.4V D. AC4.0V±0.4V
【单选题】
ZPW1-18型无绝缘移频自动闭塞,区间功放盒功出电压 ___ 。
A. AC150V～210V
B. DC150V～210V
C. AC100V～200V
D. DC100V～250V
【单选题】
ZPW1-18型无绝缘移频自动闭塞,接收盒绿灯继电器电压 ___ 。
A. AC18.0V±1.0V
B. DC18.0V±1.0V
C. AC23.0V±3.0V
D. DC23.0V±3.0V
【单选题】
ZPW1-18型无绝缘移频自动闭塞,站内发送盒报警电压 ___ 。
A. AC18.3V～25.0V
B. DC20.0V～27.0V
C. AC23.0V～29.0V
D. DC25.0V～30.0V
【单选题】
ZPW1-18型无绝缘移频自动闭塞, 站内发送盒频率功出电压___ 。
A. AC3.4V±0.4V
B. DC3.4V±0.4V
C. AC4.0V±0.8V
D. DC4.0V±0.8V
【单选题】
ZPW1-18型无绝缘移频自动闭塞, 站内功放盒功出电压 ___。
A. AC18.0V～35.0V
B. DC18.0V～35.0V
C. AC20.0V～40.0V
D. DC20.0V～40.0V
【单选题】
ZPW1-18型无绝缘移频自动闭塞, 室内发送电源盒功入电压 ___。
A. AC150V～210V
B. DC150V～210V
C. AC200V～260V
D. DC200V～260V
【单选题】
ZPW1-18型无绝缘移频自动闭塞, 室内发送电源盒功出电压 ___ 。
A. AC65V～210V
B. DC65V～210V
C. AC90V～240V
D. DC90V～240V
【单选题】
UM71型无绝缘轨道电路自动闭塞,轨道继电器N.S1·24·0·4的线圈电阻为___ 。
A. 250Ω±10.0Ω
B. 250Ω±12.5Ω
C. 280Ω±12.5Ω
D. 300Ω±14.5Ω
【单选题】
UM71型无绝缘轨道电路自动闭塞,轨道继电器N.S1·24·0·4的额定电压为 ___ 。
A. 20V
B. 22V
C. 24V
D. 28V
【单选题】
UM71型无绝缘轨道电路自动闭塞,轨道继电器N.S1·24·0·4的最大吸起电流为 ___。
A. 50mA
B. 55mA
C. 60mA
D. 64mA
【单选题】
UM71型无绝缘轨道电路自动闭塞,轨道继电器N.S1·24·0·4的最小落下电流为 ___ 。
A. 10mA
B. 20mA
C. 30mA
D. 40mA
【单选题】
CTCS-2列控车载设备可以在 ___ 之内解调轨道电路接收的列控信息。
A. 1.5s
B. 1.6s
C. 1.7s
D. 1.8s
【单选题】
ZPDJ型非电气化区段多信息移频轨道电路, 用0.06Ω标准分路电阻线,在轨道电路不利处所轨面上分路时,接收盒限入残压不大于 ___ ,轨道电路应可靠落下。
A. 60mV
B. 70mV
C. 90mV
D. 95mV
【单选题】
ZPDJ型非电气化区段多信息移频轨道电路, 在机车入口端轨面,用 ___ 标准分路电阻线分路时,应满足动作机车信号的最小短路电流的要求。
A. 0.03Ω
B. 0.04Ω
C. 0.05Ω
D. 0.06Ω
【单选题】
安装CTCS2-200H 型列控车载设备速度传感器时，通过垫片调整 轴端齿轮. 的齿顶和传感器的磁极顶端的差，使其差在 ___的范围之间。
A. 0.7mm+0.3mm
B. 0.7mm+0.5mm
C. 0.8mm+0.3mm
D. 0.8mm+0.5mm
【单选题】
CTCS-2列控系统中在顶棚速度监视区CSM，最大常用制动的限速值大于MRSP的值 ___ 。
A. 3km/h
B. 5km/h
C. 10km/h
D. 15km/h
【单选题】
CTCS-2列控系统车载设备中在顶棚速度监视区CSM，紧急制动的限速值大于最大常用制动限速值 ___ 。
A. 3km/h
B. 5km/h
C. 10km/h
D. 15km/h
【单选题】
CTCS-2列控系统车载设备在引导运行中从轨道电路接收 HB 码后在轨道电路出口处形成 NBP为 ___ 的模式曲线。
A. 25km/h
B. 30km/h
C. 35km/h
D. 40km/h
【单选题】
在目视行车模式中CTCS-2列控系统车载设备接收到禁止信号或无信号时，列车停车后，根据行车管理办法 含调度命令. ，司机经特殊操作 如按压专用按钮. ，列控车载设备生成固定限制速度 ___。
A. 10km/h
B. 15km/h
C. 20km/h
D. 25km/h
【单选题】
在调车监控模式中CTCS-2列控系统车载设备控制车列运行时，限制速度 ___。
A. 30km/h
B. 40km/h
C. 45km/h
D. 50km/h
【单选题】
ZY7-F180/4000直流电液转辙机动作杆动程为 ___。
A. 160mm
B. 180mm
C. 200mm
D. 220mm
【单选题】
ZY7-F180/4000直流电液转辙机动作时间不大于___ 。
A. 3.8s
B. 5.5s
C. 7s
D. 9s
【单选题】
ZY7-J170/4000直流电液转辙机额定电压为DC ___ 。
A. 160V
B. 170V
C. 220V
D. 380V
【单选题】
ZY7-J170/4000直流电液转辙机额定转换力为 ___ 。
A. 3kN
B. 4kN
C. 5kN
D. 6kN
【单选题】
ZY7-J170/4000直流电液转辙机动作杆动程为 ___ 。
A. 170mm
B. 180mm
C. 200mm
D. 220mm
【单选题】
ZY7-J170/4000直流电液转辙机工作电流不大于 ___ 。
A. 1A
B. 1.5A
C. 2A
D. 2.5A
【单选题】
ZY7-J170/4000直流电液转辙机动作时间不大于 ___。
A. 3.8s
B. 5.5s
C. 8.5s
D. 9s
【单选题】
ZY7-K130/4000直流电液转辙机动作杆动程为 ___。
A. 130mm
B. 170mm
C. 200mm
D. 220mm
【单选题】
ZY7-K130/4000直流电液转辙机动作时间不大于 ___。
A. 3.8s
B. 7s
C. 8.5s
D. 9s
【单选题】
ZY7-L220/3000直流电液转辙机额定转换力为 ___ 。
A. 3kN
B. 4kN
C. 5kN
D. 6kN
【单选题】
ZY7-L220/3000直流电液转辙机动作杆动程为 ___。
A. 150mm
B. 170mm
C. 200mm
D. 220mm
【单选题】
ZY7-L220/3000直流电液转辙机动作时间不大于 ___ 。
A. 3.8s
B. 7s
C. 9s
D. 12.5s
【单选题】
ZY7-G220/1800直流电液转辙机动作时间不大于 ___。
A. 3.8s
B. 7s
C. 12.5s
D. 15.5s
【单选题】
ZY7-N220/1800直流电液转辙机动作时间不大于 ___ 。
A. 3.8s
B. 7s
C. 17.5s
D. 20s
【单选题】
ZY7-P220/4200直流电液转辙机动作时间不大于 ___ 。
A. 3.8s
B. 7s
C. 17.5s
D. 24s
【单选题】
ZY7GZ-220/1800直流电液转辙机动作时间不大于___ 。
A. 3.8s
B. 7s
C. 12.5s
D. 15.5s
推荐试题
【单选题】
At present, nearly of the world’s population communicate in English.
A. A. half
B. B. a quarter
C. C. one third
D. D. one fifth
【单选题】
The attack on Rome ended the Roman occupation in Britain in 410.
A. A. Norman
B. B. Danish
C. C. Celtic
D. D. Germanic
【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
