相关试题
【单选题】
轨道线路曲线半径R≤150时，轨距加宽标准为10mm。 ___
A. R≤125
B. R≤150
C. R≤175
D. R≤200
【单选题】
在测量轨道线路曲线正矢时，应在钢轨踏面下（ ）处测量正矢。 ___
A. 15mm
B. 16mm
C. 17mm
D. 18mm
【单选题】
岔枕失效标准之一是机械磨损，经削平或除去腐朽木质后，其厚度不足（）mm ___
A. 0.95
B. 0.1
C. 0.105
D. 0.11
【单选题】
无缝线路缓冲区接头螺栓扭矩应达到( )。 ___
A. 600N•m
B. 700N•m
C. 800N•m
D. 900N•m
【单选题】
轨端肥边大于（ ）时，应及时处理。 ___
A. 1mm
B. 2mm
C. 3mm
D. 4mm
【单选题】
60kg/m钢轨的构造轨缝是（ ） ___
A. 17mm
B. 18mm
C. 19mm
D. 20mm
【单选题】
尖轨尖端至尖轨跟前后5米内，冰雪必须低于（）10cm，并距左右基本轨外侧60cm。 ___
A. 轨腰
B. 轨顶面
C. 轨底面
D. 距轨顶面1/3处
【单选题】
对于重伤标准，轨头下颏透锈长度超过（ ）。 ___
A. 20mm
B. 30mm
C. 40mm
D. 50mm
【单选题】
钢轨总磨耗等于垂直磨耗与（ ）之和 ___
A. 1/2侧面磨耗
B. 1/4侧面磨耗
C. 1/6侧面磨耗
D. 侧面磨耗
【单选题】
两线间材料的堆高不得超过轨面（ ）。 ___
A. 200mm
B. 250mm
C. 300mm
D. 350mm
【单选题】
不合格道岔整修后，在（）分及以上者，可评为合格。 ___
A. 0.9
B. 0.85
C. 0.8
D. 0.6
【单选题】
正线及试车线上插入的个别短轨长度不得短于（ ），并不得连续插入两根及以上。 ___
【单选题】
在测量轨道线路曲线正矢时，应在钢轨踏面下( )处测量正矢。 ___
A. 15mm
B. 16mm
C. 17mm
D. 18mm
【单选题】
轨道线路施工作业时需在施工区域前后（ ）米范围设置1盏红闪灯。 ___
A. 25m
B. 50m
C. 75m
D. 100m
【单选题】
曲线地段，未被平衡欠超高，一般应（ ）61mm，未被平衡过超高不得大于30mm。 ___
A. 大于
B. 不大于
C. 小于
D. 不小于
【单选题】
路基维修单项作业验收，按路基维修单项作业验收标准进行。验收采用评分的办法，维修质量分优良、合格两级，每单项作业以( )分为优良。 ___
A. 24~30
B. 19~23
C. 19~24
D. 18以下
【单选题】
路基维修单项作业验收，按路基维修单项作业验收标准进行。验收采用评分的办法，维修质量分优良、合格两级，每单项作业以( )分为合格。 ___
A. 24~30
B. 19~23
C. 19~24
D. 18以下
【单选题】
路基维修单项作业验收，按路基维修单项作业验收标准进行。验收采用评分的办法，维修质量分优良、合格两级，每单项作业以( )分为不合格。 ___
A. 24~30
B. 19~23
C. 19~24
D. 18以下
【单选题】
路基计划维修和小型病害整治工程完工后，应执行（ ）验收制。 ___
【单选题】
搬运一根长12.5m的43kg/m钢轨，若每人负重不超过70kg，则至少需要（ ）人抬运。 ___
【单选题】
调高垫板应垫在大胶垫之间，一般情况下，每处调高垫板总厚度不超过（ ）。 ___
A. 5mm
B. 10mm
C. 20mm
D. 30mm
【单选题】
线路综合维修周期依据（ ）确定。 ___
A. 通过总重
B. 车辆总重
C. 机车轴重
D. 车辆轴重
【单选题】
当80km/h以下正线线路前后高低误差达到（ ）时，应进行经常保养作业。 ___
A. 5mm
B. 6mm
C. 7mm
D. 8mm
【单选题】
轨顶面剥落掉块，（ ）属钢轨折断。 ___
A. 长度超过50mm，深度超过8mm
B. 长度超过30mm，深度超过10mm
C. 长度超过30mm，深度超过8mm
D. 长度超过50mm，深度超过10mm
【单选题】
（ ）kg/m钢轨头部侧面磨耗超过17mm时为重伤钢轨。 ___
【单选题】
下列情况中，（ ）应对轨缝进行调整。 ___
A. 25m钢轨地段每千米总误差为75mm
B. 线路爬行量为15mm
C. 12.5m钢轨地段出现连续4个瞎缝
D. 12.5m钢轨地段出现连续2个轨缝大于构造轨缝
【单选题】
线路爬行量超过（ ）时应对轨缝进行调整。 ___
A. 15mm
B. 18mm
C. 20mm
D. 25mm
【单选题】
在无缝线路上焊接钢轨后，放行列车时，焊缝处轨温应降至( )。 ___
A. 100℃以下
B. 200℃以下
C. 300℃以下
D. 400℃以下
【单选题】
在无缝线路上，钢轨折断进行临时处理时，插入的短轨不得短于 ( )的同型钢轨，桂端钻孔，上接头夹板，用螺栓拧紧。 ___
A. 4m
B. 4.5m
C. 6m
D. 7m
【单选题】
在直线上的超高顺坡，无缓和曲线时不得大于( )。 ___
A. 15mm
B. 20mm
C. 25mm
D. 30mm
【单选题】
普通线路地段，12.5m钢轨每千米轨缝总误差超过( )，应进行轨缝调整。 ___
A. ±40mm
B. ±80mm
C. ±120mm
D. ±160mm
【单选题】
钢轨侧面磨耗在钢轨踏面下( )处测量。 ___
A. 16mm
B. 14mm
C. 18mm
D. 15mm
【单选题】
每段无缝线路应设位移观测桩不少于（ ）对 ___
【单选题】
观察列车从第一个公里标到第二个公里标所用时间为1min，则行车速度是( )km/h。 ___
【单选题】
若设置缓和曲线后中间圆曲线的长度不足( )，就会使一节车厢的全轴距跨在两个缓和曲线上，不利于行车的平稳。 ___
A. 20m
B. 30m
C. 40m
D. 50m
【单选题】
为了防止钢轨爬行，要求中间扣件阻力要（ ）轨枕底面的道床纵向阻力。 ___
A. 小于
B. 等于
C. 大于或等于
D. 大于
【单选题】
无缝线路在锁定轨温以下时，钢轨内部产生（ ）。 ___
A. 拉应力
B. 压应力
C. 剪压力
D. 拉应力与压应力
【单选题】
无缝线路锁定轨温规定左右股相对轨温差（ ）。 ___
A. 为零
B. 小于5℃
C. 小于或等于5℃
D. 在锁定轨温范围内
【单选题】
摩擦阻力的大小主要取决于接头螺栓（ ）和钢轨与夹板接触面之间的摩擦系数。 ___
A. 拉应力
B. 拉力
C. 压应力
D. 压力
推荐试题
【单选题】
What did the kids do when parents set any time or content limits, according to the Kaiser Family Foundation? ___
A. They cut down on their screen time.
B. They appreciated their parents’ love.
C. They spent more time staying outdoor.
D. They accepted parents’ rules unwillingly.
【单选题】
What will Kenneth Ginsburg most probably suggest that parents should do? ___
A. Avoid setting firm rules.
B. Avoid ruling with an iron grip.
C. Set rules after family discussion.
D. Set rules that are easy to understand.
【单选题】
Margaret Broe -Fitzpatrick finds it impossible. ___
A. to achieve just- right parenting
B. to keep track of everything done by the kids
C. for the kids to face rules alone
D. for the kids to observe rules without protest
【单选题】
The passage is mainly intended for parents . ___
A. whose kids have difficulty in self- discipline
B. whose kids are addicted to media use
C. who have doubts about setting rules
D. who are too busy to care for their kids
【单选题】
The word “it” (Para. 2) most probably refers to. ___
A. the lack of stable communities
B. the breakdown of informal information channels
C. the increased mobility of families
D. the growing number of people moving from place to place
【单选题】
The main problem people may encounter today arises from the fact that . ___
A. they have to learn new things consciously
B. they lack the confidence of securing reliable and trustworthy information
C. they have difficulty obtaining the needed information readily
D. they can hardly carry out casual communications with an extended family
【单选题】
From the passage we can infer that _______. ___
A. electronic mail will soon play a dominant role in transmitting messages
B. it will become more difficult for people to keep secrets in an information era
C. people will spend less time holding meetings or conferences
D. events will be reported on the spot mainly through satellites
【单选题】
Technology facilitates _______. ___
A. sharing information
B. storing and sending information
C. providing people with easy access to more information
D. all of the above
【单选题】
We can learn from the last paragraph that _______. ___
A. it is necessary to obtain as much
B. people should make the best use of the information
C. we should realize the importance of accumulating information
D. it is of vital importance to acquire needed information efficiently
【单选题】
The author thinks that people are _________. ___
A. satisfied with their appearance
B. concerned about appearance in old age
C. far from neglecting what is in fashion
D. reluctant to follow the trends in fashion
【单选题】
Fashion magazines and TV advertisements seem to link fashion to _________. ___
A. confidence in life
B. personal dress
C. individual hair style
D. personal future
【单选题】
Causes of fashions are _________. ___
A. uniform
B. varied
C. unknown
D. inexplicable
【单选题】
Present-day society is much freer and easier because it emphasizes _________. ___
A. uniformity
B. formality
C. informality
D. individuality
【单选题】
Which is the main idea of the last paragraph? ______________ ___
A. Care about appearance in formal situations.
B. Fashion in formal and informal situations.
C. Ignoring appearance in informal situations.
D. Ignoring appearance in all situations.
【单选题】
Permissive parents would ________. ___
A. let their children read any books they like to
B. not let their children see any films they like to
C. not let their children read any books without first checking their contents
D. let their children see the films with their first checking
【单选题】
The fact that parents check the contents of the book or the film for their children to read or see shows __________. ___
A. the necessity of censorship
B. that many books and films are bad
C. that children need their parents to help them understand more
D. that the parents are permissive
【单选题】
Which of the following statements is NOT true?____________ ___
A. Some adults can’t tell right from wrong.
B. Censorship is compared to the law because both of them perform good service to society as a whole.
C. Censors pay attention only to genuine works of art.
D. Censorship is necessary because many books, plays and films are far from being “works of art”.
【单选题】
What does the word “corrupt” in Para.4 mean?__________ ___
A. Make morally bad.
B. Hurt.
C. Injure.
D. Damage.
【单选题】
What would be the best title of this passage?_____________ ___
A. Permissive Parents and Responsible Parents.
B. Censorship and the Law.
C. Censors Value Artistic Merits .
D. Censorship Performs Good Service to Society.
【单选题】
Lie detectors are widely used in the United States because _____________. ___
A. they can help detect people’s emotional stress
B. they can help detect people's physiological changes
C. they can help find out whether a person is telling the truth or not
D. they can measure the subject’s electrical resistance
【单选题】
According to the passage, we know that Britain______________. ___
A. will adopt lie detectors widely
B. will adopt lie detectors on a smaller scale
C. adopt lie detectors
D. has not decided whether to adopt lie detectors or not
【单选题】
The tests themselves are by no means free from error..." (Line 1-2.Para.3) means ____________. ___
A. the tests definitely have no error
B. the tests sometimes make mistakes
C. the polygraphers do not make mistakes
D. the polygraphers can avoid error by using some techniques
【单选题】
Which of the following is true? ________________ ___
A. The tests are conducted by qualified polygraphers.
B. Innocent people may blush or stammer when questioned.
C. Guilty people can definitely be found out by answer questions
D. Guilty people may escape by refusing to answer questions.
【单选题】
What troubles lie detector researchers most is that _______________. ___
A. innocent people are convicted crimes
B. innocent people will learn to tell lies
C. lie detectors may cause industrial unrests
D. lie detectors are sometimes not dependable
【单选题】
In the passage the author's attitude towards "mixed-ability teaching" is _______. ___
A. critical
B. questioning
C. approving
D. objective
【单选题】
By "held back" (Line 1) the author means _____. ___
A. made to remain in the same classes
B. forced to study in the lower classes
C. drawn to their studies
D. prevented from advancing
【单选题】
The author argues that a teacher's chief concern should be the development of the student's _________. ___
A. personal qualities and social skills
B. total personality
C. learning ability and communicative skills
D. intellectual ability
【单选题】
Which of the following is NOT MENTIONED in the third paragraph? __________ ___
A. Group work gives pupils the opportunity to learn to work together with others.
B. Pupils also learn to develop their reasoning abilities.
C. Group work provides pupils with the opportunity to learn to be capable organizers.
D. Pupils also learn how to participate in teaching activities.
【单选题】
The author's purpose in writing this passage is to ______. ___
A. argue for teaching bright and not-so-bright pupils in the same class
B. recommend pair work and group work for classroom activities
C. offer advice on the proper use of the library
D. emphasize the importance of appropriate formal classroom teaching
【单选题】
According to the author, the deaths among youth are mainly caused by _____. ___
A. traffic accidents
B. smoking-related diseases
C. murder
D. all of these
【单选题】
Every day there are over_____high school students who will become regular smoker. ___
A. 75
B. 23
C. 30
D. 3000
【单选题】
By "dropout" the author means______. ___
A. students who failed the examination
B. students who left school
C. students who lost their way
D. students who were driven out of school
【单选题】
The reason for declining adolescent smoking is that ________. ___
A. NCI has taken effective measures
B. smoking is prevented among high school seniors
C. there are many smokers who have died of cancer
D. not stated
【单选题】
What is implied but not stated by the author is that ________. ___
A. smoking rates among youth have declined very little
B. there are now more female than male smokers among high school seniors
C. high smoking rates are due to the increase in wealth
D. smokers at high school are from low socio-economic backgrounds
【单选题】
According to the passage, which of the following is NOT a disadvantage of part time education? _______________ ___
A. It requires some break in one's career.
B. It tends to last too long for many people to complete a degree program.
C. It affects one's career.
D. It gives the student less time to share with the family.
【单选题】
Which of the following is NOT an advantage of distance learning? _________ ___
A. The student may choose his or her own pace.
B. The student may study at any time to his or her convenience.
C. They can pursue their chosen career while studying.
D. Their tutorial assistance comes through regular airmail, telephone, etc.
【单选题】
What benefit will distance learning program bring to a business? __________ ___
A. Recruitment of more talented people.
B. Good image of the business.
C. Better cooperation with universities.
D. Further training of employees and business growth.
【单选题】
Good distance learning program have the following characteristic EXCEPT______. ___
A. distance learning course is the same as students taking courses in campus
B. the degree should be same as on campus study
C. professor-student relationship is strictly one to one all through the course
D. includes subject evaluation tool
【单选题】
What benefit will distance learning bring to an employee of a business? ___________ ___
A. Professional growth.
B. Good relationship with the employer.
C. Good impression on the employer.
D. Higher salary.
【单选题】
In the first paragraph, what does "plastic money" (Line 6, Para.1) refer to? ______ ___
A. Dollars.
B. Online payment.
C. Credit cards.
D. Coins.
