【单选题】
Such chemicals are indeed negatively ___ those humans to whom they are expose D.
A. risking
B. detecting
C. impacting
D. overwhelming
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相关试题
【单选题】
We regret for selling you the faulty product, and our company has agreed to ___ you by $500.
A. match
B. reverse
C. reward
D. compensate
【单选题】
This lecture taught me how to manage my time better to include my online studies in my busy ___.
A. schedule
B. outline
C. structure
D. responsibility
【单选题】
Generally speaking, an Irish person will not accept an offer straight away; he will ___ once or twice first before accepting it.
A. receive
B. decline
C. summarize
D. polish
【单选题】
There is every possibility that many species (物种) of animals will die out because of their disappearing food ___.
A. mode
B. source
C. pattern
D. foundation
【单选题】
As a college student, you should enjoy learning and get yourself ___ in those things that interest you.
A. concerned
B. devoted
C. involved
D. pursued
【单选题】
The name of Hitler (希特勒) has always been associated with war and ___ killing in the minds of those people who lived through World War Two.
A. imaginary
B. multiple
C. indispensable
D. massive
【单选题】
He works hard every day to make more money, but he ___ his health, time with his family, and the hobbies he once love D.
A. neglects
B. reminds
C. ceases
D. Declines
【单选题】
I asked a passenger sitting beside me if our train was the Westlake Express train, and he said he ___ of it.
A. not even heard
B. had not even heard
C. even not heard
D. ever had not heard
【单选题】
Whatever you say in the paper has to ___ your own thinking; hence simply repeating the professor’s opinions or whatever is in the readings will not get you very far.
A. ignore
B. arouse
C. reflect
D. release
【单选题】
We are sorry to know that they did not succeed ___ the project for lack of necessary funds.
A. to fulfill
B. to have fulfilled
C. in fulfilling
D. with fulfilling
【单选题】
It is surprising that fewer students were prepared to undertake the ___ to hand in written work on a regular basis, or to study over long periods.
A. engagement
B. commitment
C. authority
D. aspiration
【单选题】
Emily felt hurt and ___ by a close friend who had borrowed a considerable sum of money to pay for a house and then took it as a gift, never thinking of giving back the money.
A. conflicted
B. curbed
C. swollen
D. betrayed
【单选题】
In 1988 the old system was ___ in the country and a new system was introduced to take effect in 1990.
A. transmitted
B. abolished
C. assumed
D. compensated
【单选题】
We should not ___ ourselves to the classroom. We should go out of the classroom, see the world and talk to others as much as we can.
A. entertain
B. confine
C. assign
D. involve
【单选题】
I have always been grateful ___ Fred __the generous and helpful information when I was at the crossroads.
A. to … for
B. to … with
C. for … with
D. for … to
【单选题】
I think we both need to ___ the past, be happy about what we had for a time, learn from our experiences, and move on from there.
A. let go of
B. give authority to
C. make sense of
D. keep up with
【单选题】
My brother and I managed to ___ with each other and we soon made peace after a week’s quarrel.
A. heal
B. reconcile
C. respond
D. advocate
【单选题】
The two robbers in a stolen car tried to ___ a police roadblock (路障), but faile D.
A. break in
B. break off
C. break up
D. break through
【单选题】
Because of his long illness, Lee’s English level had dropped, but he was determined to ___ the other students by working harder.
A. put up with
B. catch up with
C. get along with
D. fill up with
【单选题】
We appreciate your efforts in making changes in your schedule and think that this new arrangement is now ___ to us.
A. agreeable
B. sustainable
C. portable
D. indispensable
【单选题】
The woman who died in a car crash last Saturday in the suburbs has been ___ as Kate Johnson, a 25-year-old office clerk.
A. justified
B. identified
C. notified
D. classified
【单选题】
My nephew failed in the College Entrance Examination, and we were all very sorry that he did not ___ to the university.
A. take it
B. get it
C. make it
D. succeed it
【单选题】
Almost half of that group will experience stress ___ enough to call for professional help.
A. tense
B. moderate
C. bearable
D. intense
【单选题】
If you grow too fast your entire economy could completely shut down and bring growth to a(n) ___.
A. halt
B. cease
C. peak
D. epidemic
【单选题】
I tried my best to drive inside in order to avoid the edges that might make me ___ the steep slope.
A. slip down
B. settle down
C. bring down
D. turn down
【单选题】
When the driver heard that there was a bomb on the bus, he immediately ___ to the side of the highway and radioed the police.
A. put out
B. took off
C. pulled over
D. slipped off
【单选题】
She was very ___ to become a manager in our customers’ office, but finally accepted our offer.
A. eager
B. intelligent
C. ridiculous
D. reluctant
【单选题】
In the race, it looked as if he would be the first, but then another young man who was close behind him put on speed and ___ by a few seconds.
A. beat him for it
B. beat him to it
C. beat him up
D. beat it to him
【单选题】
It is really helpful to have someone like you that we can ___ and count on during difficult times.
A. lean on
B. get to
C. hang on
D. get by
【单选题】
Women have a greater ability to ___ names with faces than men do, and they are also better at recalling lists.
A. associate
B. compare
C. engage
D. involve
【单选题】
He was always ready to help others and managed to ___ his friends ____being hurt.
A. expose … to
B. confine …to
C. restrict … from
D. shield … from
【单选题】
Older people are less likely to be ___ their negative emotions (情绪) and more likely to focus on the positive.
A. reserved for
B. caught up in
C. beat up to
D. counted on
【单选题】
I don’t have any bandage, so I have to ___ pressure to the wound to keep the bleeding down.
A. apply
B. involve
C. fulfill
D. establish
【单选题】
It is important that whichever candidate (候选人) is picked the loser should accept the defeat ___.
A. in advance
B. with great pride
C. with good grace
D. in large part
【单选题】
___ that new homes cost more than older homes, but that is not true across the country anymore.
A. It used to be
B. It is used to be
C. It used to being
D. It is used to being
【单选题】
The boss ___ his employees to work longer hours as the company is dreadfully short of staff at present.
A. called on
B. signed up
C. cared for
D. set up
【单选题】
The president’s visit and ___ discussions led to a plan that aimed to improve the trade relations between the two countries.
A. emerging
B. subsequent
C. consequent
D. Submerging
【单选题】
The author ___ his general idea mainly through statistics and results obtained from a survey (调查) about auto customer services in the United States.
A. assumes
B. engages
C. illustrates
D. represents
【单选题】
People in this town starved, several buildings were bombed and crime ___ because you had to steal to eat.
A. eroded
B. reflected
C. released
D. soared
【单选题】
Olympic recognition for bodybuilding (健美) remains ___ since some argue that bodybuilding is not a sport because the actual contest does not involve the same sort of efforts as “real” sports.
A. controversial
B. conventional
C. characteristic
D. influential
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【单选题】
垂直磨耗在钢轨顶面宽___(距标准工作边)测量。
A. 1/2处
B. 1/3处
C. 1/4处
D. 1/5处
【单选题】
铺设非标准长度钢轨或再用轨，无厂制缩短轨时，钢轨接头可采用相错式，其相错量不得小于___。
【单选题】
车辆段（场）线平直及异型夹板裂纹超过___，双头及鱼尾型夹板裂纹超过(D)时，应及时更换。
A. 3mm，10mm
B. 3mm，15mm
C. 5mm，10mm
D. 5mm，15mm
【单选题】
曲线地段，未被平衡欠超高，一般应不大于___，未被平衡过超高不得大于(D)。
A. 60mm，30mm
B. 61mm，34mm
C. 60mm，34mm
D. 61mm，30mm
【单选题】
轨道线路曲线半径R≤150时，轨距加宽标准为___。
A. 5mm
B. 10mm
C. 15mm
D. 不设加宽
【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. 14mm
B. 15mm
C. 16mm
D. 17mm
【单选题】
50kg/m钢轨7号单开道岔及5.0m交叉渡线道岔牵引点动程为___。
A. 152mm
B. 160mm
C. 168mm
D. 80mm
【单选题】
正线道岔（直向）与曲线之间的直线段长度，不得短于___。
A. 15m
B. 20m
C. 25m
D. 30m
【单选题】
P50 kg/m7号道岔的车辆侧向过岔最高速度为___。
A. 20Km/h
B. 25Km/h
C. 30Km/h
D. 35Km/h
【单选题】
P60 kg/m9号道岔的车辆侧向过岔最高速度为___。
A. 20Km/h
B. 25Km/h
C. 30Km/h
D. 35Km/h
【单选题】
查照间隔（辙叉心作用至护轨头部外侧的距离）不得小于___，护背距离（辙叉翼作用面至护轨头部外侧的距离）不得大于(A)。
A. 1391mm，1348mm
B. 1391mm，1346mm
C. 1393mm，1348mm
D. 1393mm，1346mm
【单选题】
温度应力式无缝线路,固定区长度不得短于___。
A. 25m
B. 50m
C. 100m
D. 150m
【单选题】
在温度应力式无缝线路上，铝热焊缝距轨枕边不得小于___。
A. 25mm
B. 30mm
C. 35mm
D. 40mm
【单选题】
混凝土枕地段应调整不同号码扣板、轨距挡板，并可用加垫片的方法调整尺寸，但厚度不得超过___。
A. 0.5mm
B. 1mm
C. 1.5mm
D. 2mm
【单选题】
我国钢轨的标准长度为___和(B)两种。
A. 12m，25m
B. 12.5m，25m
C. 6m，25m
D. 7m，25m
【单选题】
波磨轨耗谷深超过___为轻伤轨。
A. 0.3mm
B. 0.4mm
C. 0.5mm
D. 0.6mm
【单选题】
P60 kg/m钢轨普通夹板螺栓孔直径为___。
A. 26mm
B. 27mm
C. 28mm
D. 29mm
【单选题】
P60 kg/m钢轨普通夹板第一孔至第二孔距离为___。
A. 140mm
B. 150mm
C. 110mm
D. 160mm
【单选题】
8级螺栓直径为___。
A. 20mm
B. 22mm
C. 24mm
D. 26mm
【单选题】
9螺栓直径为___。
A. 20mm
B. 22mm
C. 24mm
D. 26mm
【单选题】
轨枕上面支承钢轨的部分称为承轨槽，做成___的轨底坡,以适应轨底坡的要求。
A. 0.055555556
B. 0.0625
C. 0.069444444
D. 0.076388889
【单选题】
我国铁路规定，对木枕轨道，每公里最多为___根。
A. 1920
B. 1840
C. 1667
D. 1440
【单选题】
我国铁路规定，对混凝土枕轨道，每公里最多为___根。
A. 1920
B. 1840
C. 1667
D. 1440
【单选题】
我国铁路规定，每公里最少均为___根。
A. 1920
B. 1840
C. 1667
D. 1440
【单选题】
我国地铁正线规定，每25米配置___根轨枕。
【单选题】
道床面应低于轨枕承轨面30~40mm，道床面横向排水坡度不宜小于___。
A. 0.02
B. 0.03
C. 0.04
D. 0.05
【单选题】
道床面应低于轨枕承轨面___，道床面横向排水坡度不宜小于3%。
A. 20~25mm
B. 25~30mm
C. 30~40mm
D. 40~45mm
【单选题】
碎石道床砟肩宽度为轨枕端部至道砟顶面外侧的水平距离，一般不小于___。
A. 0.2m
B. 0.3m
C. 0.4m
D. 0.5m
【单选题】
线路中心线之间的垂直距离称为线间距，地面线的线间距一般为___。
A. 4.5~5m
B. 5~5.5m
C. 5.5~6m
D. 6~6.5m
【单选题】
混凝土枕碎石道床顶面应与轨枕中部顶面平齐，木枕碎石道床顶面应低于木枕顶面___。
A. 10mm
B. 20mm
C. 30mm
D. 40mm
【单选题】
排水沟的纵向坡度应与线路坡度一致，线路平坡地段，排水沟纵向坡度不宜小于___。
A. 0.02
B. 0.03
C. 0.04
D. 0.05
【单选题】
钢轨接头不宜设置在桥台挡砟墙间的长度为___及以下的明桥面上。
A. 20m
B. 25m
C. 30m
D. 35m
【单选题】
钢轨接头不宜设置在钢梁端部，拱桥温度伸缩缝和拱顶等处前后各___范围内。
【单选题】
桥梁上钢轨扣件失效率不得大于___，且不得有隔一或连二失效扣件。
A. 0.1
B. 0.15
C. 0.2
D. 0.25
【单选题】
不是25m钢轨曲线标准缩短轨的为___。
A. 24.96m
B. 24.92m
C. 24.88m
D. 24.84m
【单选题】
不是钢轨的主要功用的为___。
A. 支持引导机车车辆的车轮
B. 使列车按正确的方向运行
C. 固定轨枕形成框架结构
D. 将来自车辆的压力传送给轨枕
【单选题】
60kg/m钢轨高为___。
A. 152mm
B. 164mm
C. 176mm
D. 192mm
【单选题】
25m,60kg/m钢轨普通线路，10.9级螺栓扭力矩应达到___。
A. 600N•m
B. 700N•m
C. 800N•m
D. 900N•m
【单选题】
不同类型的钢轨互相联结时，应使用___。
A. 鱼尾型夹板
B. 平直夹板
C. 双头式夹板
D. 异型夹板
【单选题】
下列设备零件中，___尺寸对最大轨缝限制值（即构造轨缝）没有影响。
A. 钢轨
B. 接头夹板
C. 接头螺栓
D. 轨枕扣件
