【单选题】
温度应力式无缝线路的温度应力是靠（ ）来解决的。 ___
A. 自动放散
B. 定期放散
C. 轨道的框架
D. 轨道框架和道床阻力
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相关试题
【单选题】
曲线轨距加宽递减如无缓和曲线，则在（ ）。 ___
A. 直线上递减，递减率一般不大于1‰
B. 直线和圆曲线各递减一半，递减率不大于1‰
C. 圆曲线上递减，递减率一般不大于1‰
D. 直线上递减，递减率一般不大于2‰
【单选题】
当350＞R≥300m时，轨距加宽（ ）。 ___
A. 0mm
B. 5mm
C. 10mm
D. 15mm
【单选题】
在铁路上距道口处（ ）设置司机鸣笛标(站内或站内道口两端不设)。 ___
A. 500~1000m
B. 600~1100m
C. 700~1200m
D. 800~1300m
【单选题】
防爬支撑断面应不小于（ )。 ___
A. 120cm2
B. 130cm2
C. 140cm2
D. 150cm2
【单选题】
车场线咽喉区道岔，为避免因其前后线路爬行影响到其本身的稳定，均应在前后各（ ）地段增加防爬设备。 ___
A. 60m
B. 65m
C. 70m
D. 75m
【单选题】
半径为（ ）及以下的曲线和道岔导曲线，亦可安装轨距杆和轨撑两种加强设备。 ___
A. 150m
B. 300m
C. 350m
D. 500m
【单选题】
库内线列车运行速度控制在（ ）以下。 ___
A. 3Km/h
B. 4Km/h
C. 5Km/h
D. 6Km/h
【单选题】
杭州地铁停车库内线选用车挡为（ ）。 ___
A. 固定框架式
B. 月牙式固定车挡
C. 液压缓冲式车挡
D. 液压固定式车挡
【单选题】
轨道上个别插人短轨时，车辆段场线不得小于（ ）。 ___
A. 4.5m
B. 6m
C. 7m
D. 12.5m
【单选题】
螺旋道钉锚固时的温度宜保持在( )以上。 ___
A. 0℃
B. 10℃
C. 15℃
D. 22.5℃
【单选题】
无缝线路旧钢轨应切割成不大于（ ）的短轨，以便于运输。 ___
A. 6m
B. 7m
C. 12.5m
D. 25m
【单选题】
50kg/m钢轨轨端至第一螺栓孔中心距离为（ ）。 ___
A. 66mm
B. 76mm
C. 140mm
D. 150mm
【单选题】
线路施工作业时，须在符合规定的（ ）领导下进行施工。 ___
A. 施工带班人员
B. 工班员工
C. 施工负责人
D. 施工联络人
【单选题】
更换夹板在来车前，最低限度上足（ ）个螺栓。 ___
A. 0.2
B. 0.3
C. 0.4
D. 0.5
【单选题】
为防止受电弓接触导线接触点落于工作面外，起道高度单股不得超过（ ）。 ___
A. 20mm
B. 30mm
C. 40mm
D. 50mm
【单选题】
为防止电力机车脱弓，在不侵入建筑接近限界的情况下，拨道作业时，线路一侧拨道量年度累计不得大于( )。 ___
A. 120mm
B. 130mm
C. 140mm
D. 150mm
【单选题】
调高垫板应垫在轨底与大胶垫之间，一般情况下，每处调高垫板不得超过（ ）。 ___
【单选题】
无缝线路（seamless rail、continuous welded rail）是由许多根标准长度的钢轨焊接成为不小于的长钢轨连续铺设的轨道线路。 ___
A. 300m
B. 400m
C. 500m
D. 600m
【单选题】
温度应力式无缝线路伸缩区长度根据计算确定，一般为（ ）。 ___
A. 50-100m
B. 40-100m
C. 30-100m
D. 20-100m
【单选题】
无缝线路固定区长度根据线路及施工条件确定，最短不得短于（ ）。 ___
A. 40m
B. 50m
C. 60m
D. 70m
【单选题】
定期放散温度应力式无缝线路根据当地轨温条件，把钢轨内部的温度应力每年调整放散（ ）次。 ___
A. 4～5
B. 3～4
C. 2～3
D. 1～2
【单选题】
普通无缝线路因普遍设置缓冲区而使焊接长钢轨的长度限制在（ ）以内的无缝线路。 ___
A. 1～2
B. 2～3
C. 3～4
D. 4～5
【单选题】
筒放散法是先封锁线路，然后将钢轨扣件全部松开，拆除长轨条端部的接头夹板，在长轨条底部每隔（ ）放置一滚筒。 ___
A. 5-10m
B. 10-15m
C. 15-20m
D. 20-25m
【单选题】
钢轨伸缩调节器(Expansion Rail Joint)主要用于跨度大于（ ）的连续梁桥铺设的无缝线路上、以及道岔附近。 ___
A. 90m
B. 100m
C. 110m
D. 120m
【单选题】
单线路基采用梯形路拱，拱高（ ）。 ___
A. 0.1m
B. 0.15m
C. 0.2m
D. 0.25m
【单选题】
一次修筑的双线路基采用三角形路拱，拱高（ ）。 ___
A. 0.2m
B. 0.3m
C. 0.4m
D. 0.5m
【单选题】
为设置规定的线路标志和信号标志提供空间路肩宽度不得小于（ ）。 ___
A. 0.2m
B. 0.3m
C. 0.4m
D. 2m
【单选题】
在路堤坡脚与取土坑间设置的带状地面称为天然护道。护道宽度不得小于（ ）。 ___
【单选题】
在路堤坡脚与取土坑间设置的带状地面称为天然护道。护道宽度不得小于2m，向外做成（ ）的斜坡。 ___
A. 1%一2%
B. 2%一4%
C. 3%一5%
D. 4%一6%
【单选题】
通常将贯通的取土坑设置成底部为（ ）。 ___
A. 1‰一6‰
B. 2‰一6‰
C. 2‰一8‰
D. 1‰一8‰
【单选题】
路基设置中侧沟的深度和底宽均应不小于（ ）。 ___
A. 0.4m
B. 0.5m
C. 0.6m
D. 0.7m
【单选题】
路基设置中沟底纵向坡度应不小于（ ）。 ___
【单选题】
路基设置中土质边坡坡度为（ ）。 ___
A. 1：1-1：1.5
B. 1：1-1：1.5
C. 1：1.5-1：2
D. 1：2-1：2.5
【单选题】
平台宽度根据路堑深度和地层性质等因素确定，一般为（ ）。 ___
A. 0.5~1.0m
B. 1~1.5m
C. 1.5~2m
D. 2~2.5m
【单选题】
平台宽度根据路堑深度和地层性质等因素确定并向侧沟方向做成（ ），便于横向排水。 ___
A. 1%~2%
B. 2%~4%
C. 4%~6%
D. 6%~8%
【单选题】
设置地面排水设施时，横向排水坡一般不小于（ ）(路拱的高度就是按此横坡确定的)，以便迅速排水。 ___
【单选题】
设置地面排水设施时，纵坡不小于（ ），不大于（ ）。 ___
A. 2‰ 8‰
B. 3‰ 9‰
C. 4‰ 10‰
D. 5‰ 12‰
【单选题】
普通排水沟，底宽一般为（ ），深度为（ ）。 ___
A. 0.2m 0.4m
B. 0.4m 0.6m
C. 0.6m 0.8m
D. 0.8m 1m
【单选题】
小桥:长度在（ ）及以下的桥梁称为小桥。 ___
A. 5m
B. 10m
C. 20m
D. 25m
【单选题】
中桥:长度在（ ）的桥梁称为中桥。 ___
A. 40m-120m
B. 40m-10Om
C. 20m-120m
D. 20m-10Om
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Travel in space can be very exciting; ___, it can also be boring and lonely at times.
A. so
B. however
C. thus
D. therefore
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Politicians should not ___ in business affairs that might affect their political judgment.
A. engage
B. embrace
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I wish to ___ a master’s degree in electric engineering after I graduate from college.
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There is no greater importance ___ cultivating independence in children.
A. in
B. than
C. of
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He has made it very clear ___ we should observe the new rules.
A. what
B. which
C. those
D. that
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It was when I read his letter ___ I realized he had given me huge help.
A. that
B. then
C. before
D. after
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Don’t worry too much, Jane. Your son ___ home already. Let’s go back and check it out.
A. returned
B. will return
C. has returned
D. may have returned
【单选题】
I believe friendship is an essential element of making a healthy, ___ life.
A. flexible
B. rewarding
C. wealthy
D. inquisitive
【单选题】
___ they have written about the behaviors of animals is hardly anything new.
A. That
B. This
C. What
D. Which
【单选题】
No other drugs are as good as this one; it must have been based on a(n) ___ formula (配方).
A. enormous
B. stimulating
C. unique
D. overwhelming
【单选题】
Mothers tend to be too ___ toward their children. They should let them see more of the worl D.
A. hopeful
B. protective
C. modest
D. encouraging
【单选题】
The investigation ___ evidence of a large-scale illegal trade in wild birds.
A. uncovered
B. outweighed
C. overwhelmed
D. evolved
【单选题】
Poor Laura! I feel so sorry for her. When she fell, she hurt her arm and, ___, broke her glasses.
A. in advance
B. in addition
C. over time
D. on the other hand
【单选题】
Showing some sense of humor can be a(n) ___ way to deal with some stressful situations.
A. genuine
B. available
C. effective
D. favorite
【单选题】
It will be worth the efforts even if you fail; the rewards you ___ will be great.
A. reap
B. boast
C. assure
D. cultivate
【单选题】
He suggested transporting the supplies by air. But it is absolutely ___, for it will cost too much.
A. unusual
B. uncertain
C. impractical
D. impressive
【单选题】
The newspaper didn’t mention the ___ of the damage caused by the fire.
A. range
B. level
C. extent
D. quantity
【单选题】
Do you ___ her novels as serious literature or as mere entertainment?
A. classify
B. notify
C. simplify
D. justify
【单选题】
He doesn’t ___ of buying a house this year because the bank has refused to lend him any money.
A. afford
B. make the most
C. run out
D. stand a chance
【单选题】
If you don’t ___ cooking today, we can go out to eat at the new restaurant.
A. would like
B. go on with
C. feel like
D. figure out、
【单选题】
Bullying (恃强欺弱) can ___ a climate of fear and anxiety in school, and prevent students from focusing on their schoolwork.
A. keep back
B. give rise to
C. feel like
D. make use of
【单选题】
Science can now ___ many things which were thought to be mysterious by ancient people.
A. care for
B. lay out
C. account for
D. set up
【单选题】
The school has ___ many after-class activity groups for the pupils to make their spare time more colorful.
A. set up
B. set off
C. set out
D. set down
【单选题】
When he was a small kid, he ___ from his peers because he could read fast and remember whatever he rea D.
A. showed off
B. worked out
C. stood out
D. straightened up
【单选题】
The fall in the number of deaths from heart disease is generally ___ improvements in diet.
A. put up with
B. attributed to
C. added to
D. replaced with
【单选题】
We can be partners for now, but ultimately you have to ___ to develop a new software for our project.
A. keep up
B. fire off
C. make sense
D. take the lead
【单选题】
Emotional Intelligence (情商) could be of practical use in many ___ such as how companies decide which job applicant to hire, how parents should raise their children, how schools should teach the students, and so on.
A. aspects
B. disciplines
C. structures
D. opportunities
【单选题】
The teacher should praise students for their correct answers and also suggest ___ possibilities.
A. unlimited
B. unique
C. alternative
D. essential
【单选题】
In some classrooms, desks are arranged in a U-shape, so the teacher can ___ easily with the students.
A. interrupt
B. interact
C. interpret
D. interview
【单选题】
Computer technology ___ individuals to educate themselves and adapt to a constantly changing job market.
A. lets
B. makes
C. enables
D. provides
【单选题】
Our hope for an enjoyable dinner was instantly ___ when the waiter dropped a salad plate on my hea D.
A. spoiled
B. restricted
C. exploded
D. vanished
【单选题】
___ the world has ever seen has occurred in the information and communications technologies.
A. Great a change
B. The great change
C. A greatest change
D. The greatest change
【单选题】
___ so many people around, it wasn’t convenient to have a long talk with him.
A. As
B. When
C. With
D. Since
【单选题】
Alice used to be terribly shy, but working abroad for a year has completely ___ her.
A. solved
B. transformed
C. characterized
D. regulated
【单选题】
Chinese Mandarin (普通话) is ___ for foreigners to learn because the changes in the tone will totally change the meaning of words.
A. difficult
B. accessible
C. competitive
D. easy
【单选题】
Take action on those things that will have the biggest ___ impact on your life with the least amount of effort.
A. portable
B. positive
C. sophisticated
D. moderate
【单选题】
The adoption of this measure will greatly reduce the ___ of greenhouse gas emissions (排放物), which may help slow global warming.
A. loan
B. decline
C. release
D. response
【单选题】
I think I have a healthy lifestyle. I eat a lot of fruit and vegetables, and I’m a ___ drinker.
A. moderate
B. heavy
C. gradual
D. delicate
【单选题】
In a way the human race needs to improve its mental and physical qualities if it is to deal with the more and more ___ world and meet new challenges.
A. typical
B. complex
C. rational
D. orderly
【单选题】
If a person simply does not care about this activity, it’s ___ impossible to get him to participate.
A. barely
B. seldom
C. hardly
D. practically
