【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
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相关试题
【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
【单选题】
Tom tried to justify his absence from the meeting by ___ that he had been ill that day.
A. admitting
B. advocating
C. claiming
D. citing
【单选题】
___ the huge financial benefits, biological companies have been rushing to set up laboratories and new research projects.
A. Aware
B. Aware of
C. Not aware
D. Not aware of
【单选题】
Unfortunately, ___ lack of funds, the studies he began just two months ago, had to be ended early.
A. out of
B. in addition to
C. owing to
D. to begin with
【单选题】
With a good command of English, he soon got ___ to working with British people.
A. accustomed
B. consistent
C. relevant
D. responsible
【单选题】
What needs to be ___ here is that language and culture interact, and that understanding of one requires understanding of the other.
A. altered
B. stressed
C. aroused
D. committed
【单选题】
Policies and organizations must be created to meet workers’ hopes, and to ___ new problems that inevitably arise between workers and managers.
A. compromise
B. ensure
C. undermine
D. resolve
【单选题】
To keep the wheels of industry turning, we produce consumer goods in endless quantities, and, in the process, are rapidly ___ our natural resources.
A. ignoring
B. collapsing
C. enduring
D. exhausting
【单选题】
As a person who loves peace, he is committed ___ realizing peace between countries.
A. of
B. about
C. for
D. to
【单选题】
Learning how to use chopsticks is easy for me, ___ learning how to conduct myself at the table is quite difficult.
A. whereas
B. however
C. therefore
D. besides
【单选题】
___ that the patient smokes 50 cigarettes a day, it would be reasonable to assume there is some lung damage.
A. To give
B. Giving
C. Given
D. Having given
【单选题】
Kenyan (肯尼亚的) women tend to vote for those who could provide them ___ the necessary food to live on.
A. of
B. with
C. for
D. about
【单选题】
___ all obstacles and failures, the scientist continued doing his experiments day and night.
A. In spite of
B. In contrast to
C. As a matter of
D. As a result of
【单选题】
I’m willing to ___ that a larger car would have cost more, but I still think we should have bought one.
A. withdraw
B. indicate
C. abandon
D. concede
【单选题】
Manufacturing (制造) companies spend millions of pounds on advertisements, trying to ___ customers that their products are better than those of other companies.
A. confine
B. convince
C. depress
D. reconcile
【单选题】
He is not the right person for the project: he is not very technically minded and ___, he does not have the sense of responsibility.
A. instead
B. yet
C. furthermore
D. nevertheless
【单选题】
Death rates declined in many places, partly because of the ___ in hunger.
A. decrease
B. myth
C. obstacle
D. burden
【单选题】
In deciding whether or not a situation is safe, pilots must be taught to assume that the worst will happen, and then to ___ whether there is a risk or not.
A. absorb
B. apply
C. assess
D. occupy
【单选题】
The worker was not worried as he knew that if he gave up the job, there would be ___ opportunities for him to work somewhere else.
A. formative
B. marginal
C. vigorous
D. numerous
【单选题】
The research shows the region might ___ overheating (经济过热), but the policymakers so far appear to be relatively relaxed about the future of the economy.
A. catch a glimpse of
B. be at risk of
C. take a toll on
D. be free from
【单选题】
Measures have been taken to ensure that no student will have to ___ of college for economic reasons.
A. lay out
B. cancel out
C. drop out
D. stand out
【单选题】
Stress that is not treated can lead to significant medical illnesses, which ___ can lead to greater stress and even depression (抑郁症).
A. after all
B. in turn
C. on the contrary
D. at least
【单选题】
Narcissism (自恋) has its benefits in terms of self-belief and confidence, but it also tends to be ___ risky decision-making.
A. associated with
B. contrasted with
C. reserved for
D. relieved of
【单选题】
When Tom saw his doctor again, she suggested that maybe a more substantial lunch, like a sandwich, might ___ his desire to have snacks in the afternoon.
A. count on
B. cut back on
C. hold on to
D. contribute to
【单选题】
You shouldn’t ___ – let your children make their own decisions.
A. interact
B. abuse
C. startle
D. interfere
【单选题】
This is a huge and difficult project and if you take it up, you ___ many difficulties.
A. like to encounter
B. like encountering
C. are likely to encounter
D. are like to encounter
【单选题】
The ability to live for a long time without water is characteristic ___ the camel.
A. of
B. for
C. about
D. in
【单选题】
Rising sales is a good ___ that this product is well received in the market.
A. response
B. convention
C. indication
D. Influence
【单选题】
When tourists travel abroad, they are sometimes ___ by the local people because the tourists don’t know the real value of products.
A. turned in
B. given chase
C. wrapped up
D. ripped off
【单选题】
The professor’s lecture ___ the capacity of his young audience. They all looked puzzled at him.
A. pointed out
B. went beyond
C. contributed to
D. kept off
【单选题】
We must ___ on the amount of time we use on this project.
A. cut both ways
B. cut in line
C. cut off
D. cut down
【单选题】
We have to be very patient with this experiment. It will take time for some effects to ___ clearly.
A. build up
B. break up
C. clear up
D. show up
【单选题】
Perhaps there is a(n) ___ of truth in both theories, but few of us would ever have the opportunity to find out.
A. lump
B. substance
C. section
D. element
【单选题】
Be careful when you get along with her because she is known for her short ___.
A. temper
B. emotion
C. mood
D. feeling
【单选题】
It seems that wearing less formal clothing to school and work is becoming a(n) ___.
A. trend
B. campaign
C. goal
D. occurrence
【单选题】
You cannot correct children’s bad behavior simply with a (n) ___ or two on the hand or face.
A. slap
B. smash
C. slam
D. strike
【单选题】
Our investigations (调查) ___ something very surprising – many of the employees are underpaid and work overtime all the time.
A. reveal
B. bump
C. rip
D. frustrate
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【单选题】
25T型客车检修规程规定，用500 V级兆欧表测量通信系统配线，相对湿度为60％～85％时其绝缘电阻应为___
A. 1～3 M
B. 0.3～1 M
C. 3～5 M
D. 0.5～3 M
【单选题】
TFX1防滑器系统的速度传感器与轴头齿轮之间的间隙为___
A. 1.0 mm±0.2 mm
B. 1.0 mm±0.5 mm6
C. 1.5 mm±0.2 mm
D. 1.5 mm±0.5 mm
【单选题】
25K型空调客车的空调控制柜(KLC40C-1T1)中12号线是___控制线
【单选题】
25K型空调客车的空调控制柜(KLC40C-1T1)中KA1～KA2，KA5～KA6是高灵敏、___继电器
A. 高电压
B. 普通
C. 高内阻
D. 小电流
【单选题】
属于运用客车质量鉴定A类故障的是___
A. 坐席安装松动合计不超过2件
B. 坐席标号不准确
C. 坐席破损
D. 缺少坐席
【单选题】
电茶炉配件损坏影响使用的在运用客车质量鉴定中属于___故障
【单选题】
车辆外墙油漆脱离累计___在运用客车质量鉴定中属于C类故障
A. 100 mm×100 mm
B. 200 mm×200 mm
C. 300 mm×300 mm
D. 400 mm×400 mm
【单选题】
轴温报警装置未联网的在运用客车质量鉴定中属于___故障
【单选题】
在客车辅修时，制动盘整体厚度应不小于___
A. 94 mm
B. 96 mm
C. 97 mm
D. 98 mm
【单选题】
在客车A1级检修时，应急电源电池电压低于___时，欠压保护须起作用
A. 40 V±1 V
B. 42 V±1 V
C. 44 V±1 V
D. 45 V±1 V
【单选题】
在客车辅修质量对规中缓解阀作用不良，扣___
【单选题】
在客车辅修质量对规中轴箱裂纹，每处扣___ 正确答案：
【单选题】
在客车A1级检修质量对规中电子防滑器单车静止试验出现故障显示，扣___
A. 10分
B. 20分
C. 30分
D. 40分
【单选题】
25T型客车检修规程规定，用兆欧表测量电力配线，相对湿度为60％～85％时其绝缘电阻应为___
A. ≥2 M
B. 2～0.38 M
C. ≥0.38 M
D. ≥10 M
【单选题】
在客车A1级检修质量对规中灯具点灯试验不良，每处扣___
【单选题】
25T车的可编程控制器(简称PLC)供电后，绿色___灯亮，橙色RUN灯亮，红色ERR灯灭；连接触摸屏或网关后橙色COM灯闪烁
【单选题】
用1 000 V级绝缘表测量DC 600 V干线的线间和对地的绝缘电阻值应___(相对湿度在60%～85%)
A. 2～2.3 M
B. ＞0.30 M
C. 0.38～2 M
D. ≥0.38 M
【单选题】
电瓷材料的极限工作温度是___度
A. 100
B. 120
C. 150
D. 180
【单选题】
25K型空调客车的空调控制柜(KLC40C-1T1)是通过电流继电器FA6，FA7对两台___进行过载保护的
A. 通风机
B. 压缩机
C. 冷凝机
D. 废排风机
【单选题】
车辆正常运行时KP-2A型供电装置总电流正常值应小于___A
【单选题】
铁路客车内餐厅的最小照度应达到___LX
【单选题】
变压器二次侧开路时，经过一次绕组内的电流称为___
A. 空载电流
B. 负载电流
C. 输入电流
D. 短路电流
【单选题】
库检检查蓄电池时，要求电解液须高出极板___mm
A. 20-30
B. 30-40
C. 40-50
D. 50-60
【单选题】
当交流断电时，电池在应急控制系统的控制下向轴温报警装置、应急灯、___等需应急工作的直流负载供电
A. 信息显示屏
B. 电茶炉
C. 尾灯插座
D. 客室照明
【单选题】
导电能力介于导体和绝缘体之间的物体为___
A. 导体
B. 绝缘体
C. 半导体
D. PN 结
【单选题】
下列哪种启动方式适合于三相线绕式电动机___
A. 降压启动
B. 星三角启动
C. 延边三角形启动
D. 直接启动
【单选题】
统型应急电源的三相380 V交流电源接到___连接的三相降压变压器B2初级，三相降压变压器B2的次级接到整流模块U2
A. △/△
B. △/Y
C. Y/Y
D. Y/△
【单选题】
交流电机在空载运行时，功率因数___
A. 高
B. 低
C. 先高后低
D. 先低后高
【单选题】
在一组TG450型蓄电池中，若有两块蓄电池反极则蓄电池端电压为___V
【单选题】
客车电气综合控制柜的主电路中接有DC 600 V___(6～150 mA可调，共分六挡)，当漏电值超过设定值时，自动切断供电，同时漏电指示灯亮
A. 在线绝缘检测装置
B. 绝缘检测装置
C. 漏电报警装置
D. 轴温报警装置
【单选题】
轴报器出库前须工作正常，轴与轴同侧温差不大于___度
【单选题】
25T型客车在正常供电时，空调、客室电热等负载由___35 kV•A逆变器供电
【单选题】
25T型客车的逆变器箱主电路为___电路，采用IGBT作为开关器件，具有开关频率高、驱动简单、损耗低的特点
A. 单相桥式大电流型
B. 单相桥式电压型
C. 三相桥式电压型
D. 三相桥式大电流型
【单选题】
25T型客车的逆变器，在输出额定电压、额定电流和规定的负载功率因数状态时，逆变器的效率应大于___
A. 80％
B. 90%
C. 75％
D. 85％
【单选题】
25T型客车的逆变器应有一定的承受输入___的能力
A. 电流突变
B. 电压突变
C. 功率突变
D. 功率因数突变
【单选题】
25K型空调客车的空调控制柜(KLC40C-1T1)中KT1，KT2的时间设定值为___
A. 30 s和35 s
B. 60 s和70 s
C. 20 s和40 s
D. 3 min和5 min
【单选题】
25K型空调客车的空调控制柜(KLC40C-1T1)的客室电加热控制回路须经过___中3Q，4Q的控制
A. 温度控制柜
B. 电源控制柜
C. 电茶炉控制箱
D. 照明控制柜
【单选题】
25T型客车的逆变器输出三相负载允许___不平衡
A. 30％
B. 20%
C. 10％
D. 15％
【单选题】
25T型客车的逆变器在20 kW负载状态下稳定运行时，突加制冷压缩机负载(功率为4.5～5.5 kW)，逆变器___
A. 必须重新启动
B. 必须停机，3～5 min再启动
C. 应能正常运行
D. 将会跳闸
