【填空题】
55.无粘结预应力混凝土结构在张拉后容许预应力筋对周围混凝土发生___滑动。
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相关试题
【填空题】
56.斜拉桥是新型的桥梁形式,这种形式大桥的主桥分为___和___两大部分。
【填空题】
57.___和___是国际通行的工程建设项目组织实施方式。
【填空题】
58.BIM 中的图形是赋予了___属性的实体。
【填空题】
59.BIM 是指建筑物在设计和建造过程中,创建和使用的“___”。
【单选题】
The word "wag" (Line 1, Para.1) most probably means _________.
A. move
B. shake
C. bite
D. play
【单选题】
The video cameras were used to catch the dogs' responses because ___________.
A. the dogs were put in the wooden boxes
and tested one at a time
B. it was easier to catch the dogs’s response changes in the tail wagging
C. they enabled the dogs’owners to know
about their dogs’; habit
D. the dogs wagged their tails in different
directions when they were in different
moods
【单选题】
When there are no stimuli, a dog will ___________.___
A. wag to the right
B. no wag at all
C. wag to the left
D. wag to the left and then wag to the right
【单选题】
The purpose of doing the experiment is _________.___
A. to train dogs for their owners
B. to help dogs find companion
C. to help people choose their pet dogs
D. to help people judge the mood of dogs
【单选题】
The underlined word "they" in the last sentence refers to __________.___
A. the trainers
B. the systems
C. the researchers
D. the dogs
【单选题】
The new law passed in Rome will ________.___
A. help improve fishing environment
B. stop people from catching goldfish
C. guarantee better conditions for goldfish
D. discourage keeping goldfish at home
【单选题】
People in Rome believe that the civilization of a city can be judged by _________.___
A. awareness of animal protection
B. exchanges with other cities
C. protection of ancient ruins
D. recognition of animal lovers
【单选题】
The underlined word "compassion" in Para 2 is the closest in meaning to __________.___
A. support
B. pity
C. help
D. love
【单选题】
People may break the law in Turin if they ________.___
A. keep their dogs or cats in cars
B. shut their dogs home all day long
C. raise their cats near ancient ruins
D. feed homeless animals in car parks
【单选题】
We can infer from the passage that _________.___
A. the owners can leave their dogs in hot cars
B. the cat only lives in modern life
C. the new law can prevent cruelty to animals
D. the new law gives recognition to the
people who feed homeless cat
【单选题】
If a person finds getting up early a problem, most probably ________.___
A. he is a lazy person
B. he refuses to follow his own energy cycle
C. he is not sure when his energy is low
D. he is at his peak in the afternoon or evening
【单选题】
Which of the following may lead to family quarrels according to the passage?___
A. Unawareness of energy cycles.
B. Familiar monologues.
C. A change in a family member's energy cycle.
D. Attempts to control the energy cycle of other family members.
【单选题】
If one wants to work efficiently at his low point in the morning, he should __________.___
A. change his energy cycle
B. overcome his laziness
C. get up earlier than usual
D. go to bed earlier
【单选题】
You are advised to rise with a yawn and stretch because it will __________.___
A. help to keep your energy for the day's work
B. help you to control your temper early in the day
C. enable you to concentrate on your routine work
D. keep your energy cycle under control all day
【单选题】
Which of the following statements is NOT true?___
A. Getting off to work with a minimum effort helps save one's energy.
B. Dr. Kletman explains why people reach their peaks at different hours of day.
C. Habit helps a person adapt to his own energy cycle.
D. Children have energy cycles, too.
【单选题】
An effective way to prevent the burnout of young athletes is __________.___
A. to increase their sense of success
B. to make sports less competitive
C. to reduce their mental stress
D. to make sports more challenging
【单选题】
According to the passage sport is positive for young people in that __________.___
A. it can help them learn more about society
B. it enables them to find flaws in themselves
C. it teaches them how to set realistic goals for themselves
D. it can provide them with valuable experiences
【单选题】
Many coaches and parents are in the habit of criticizing young athletes __________.___
A. without realizing criticism may destroy their self-confidence
B. in order to make them remember life's lessons
C. believing that criticism is beneficial for their early development
D. so as to put more pressure on them
【单选题】
According to the passage parents and coaches should __________.___
A. help children to win every game
B. pay more attention to letting children enjoy sports
C. train children to cope with stress
D. enable children to understand the positive aspect of sports
【单选题】
The author's purpose in writing the passage is _________.___
A. to persuade young children not to worry about criticism
B. to stress the importance of positive reinforcement to children
C. to discuss the skill of combining criticism with encouragement
D. to teach young athletes how to avoid burnout
【单选题】
As pointed out at the beginning of the passage, people used to think that air pollution _______.___
A. cause widespread damage in the countryside
B. affected the entire eastern half of the United States
C. had damaged effect on health
D. existed merely in urban and industries areas
【单选题】
As to the greenhouse effect, the author ________.___
A. share the same view with the scientist
B. is uncertain of its occurrence
C. rejects it as being ungrounded
D. thinks that it will destroy the world soon
【单选题】
The underlined word "offset" in the second paragraph could be replaced by _________.___
A. slip into
B. make up for
C. set up
D. catch up with
【单选题】
It can be concluded that ____________.___
A. raising the world's temperature only a few degrees would not do much harm to life on earth
B. lowering the world's temperature merely a few degrees would lead major farming areas to disaster
C. almost no temperature variations have occurred over the past decade
D. the world's temperature will remain constant in the years to come
【单选题】
This passage is primarily about __________.___
A. the greenhouse effect
B. the burning of fossil fuels
C. the potential effect of air pollution
D. the likelihood of a new ice age
【单选题】
What is the major function of paragraph 1?___
A. To arouse the reader's concern.
B. To introduce the theme of the whole passage.
C. To summarize the whole passage.
D. To state the primary uses of TV.
【单选题】
Television, as a source of entertainment, is ________.___
A. not very convenient
B. very expensive
C. quite dangerous
D. relatively cheap
【单选题】
Why are some people against TV?___
A. Because TV programs are not interesting.
B. Because TV viewers are totally passive.
C. Because TV prices are very high.
D. Because TV has both advantages and disadvantages.
【单选题】
One of the most obvious advantages of TV is that _________.___
A. it keeps us informed
B. it is very cheap
C. it enables us to have a rest
D. it controls our lives
【单选题】
According to the passage, whether TV is good or not depends on ___________.___
A. its quality
B. people's attitude towards it
C. how we use it
D. when we use it
【单选题】
What regulation was issued by New York State concerning beverage containers?___
A. A fee should be charged on used containers for recycling.
B. Throwaways should be collected by the state for recycling.
C. Consumers had to pay for beverage containers and could get their money back on returning them.
D. Beverage companies should be responsible for collecting and reusing discarded plastic soda bottles.
【单选题】
The returned plastic bottles in New York used to _____________.___
A. be turned into raw materials
B. be separated from other rubbish
C. have a second-life value
D. end up somewhere underground
【单选题】
The key problem in dealing with returned plastic beverage containers is ______________.___
A. how to reduce their recycling costs
B. to sell them at a profitable price
C. how to turn them into useful things
D. to lower the prices for used materials
【单选题】
Recycling has become the first choice for the disposal of rubbish because ______________.___
A. recycling causes little pollution
B. other methods are more expensive
C. recycling has great appeal for the jobless
D. local governments find it easy to manage
【单选题】
It can be concluded from the passage that ____________.___
A. recycling is to be recommended both economically and environmentally
B. local governments in the U.S. can expect big profits from recycling
C. rubbish is a potential remedy for the shortage of raw materials
D. landfills will still be widely used for waste disposal
【单选题】
The author chose to study engineering at a small liberal-arts university because he ________.___
A. intended to be a sensible student with noble ideals
B. wanted to be an example of practicality and rationality
C. intended to be a combination of engineer and humanist
D. wanted to coordinate engineering with liberal-arts courses in college
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列车高速运行时,基本阻力主要是___。
【单选题】
加装了切控阀的客运机车,制动缸压力与制动管减压量的关系为___。
A. 1:1
B. 1:2.5
C. 1:3.25
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压缩车钩时要注意被压缩的车辆数不应超过列车总量数的___。
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列车施行常用制动在进入停车线停车时,应做到___,并不应使用单阀制动停车。
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列车常用制动时,应遵守初次减压量不得少于___kPa。
【单选题】
追加减压量一般不应超过两次;___次追加减压量不得超过初次减压量;累计减压量不应超过最大有效减压量。
【单选题】
货物列车运行中,自阀减压排风未止,不得缓解机车制动;自阀减压后至缓解、停车前,机车制动缸压力不得少于___kPa。
【单选题】
使用动车制动时,制动电流不得超过___。
【单选题】
动力制动与空气制动配合使用时,应将机车制动缸压力及时缓解为___kPa (设有自动控制装置的机车除外)。
【单选题】
列车在运行中,司机应按照“___”操纵列车,按规定使用列车运行监控记录装置、无线调度电话、机车自动信号以及机车自动停车装置,并严格执行呼唤应答和车机联控制度。
A. 列车操纵示意图
B. 列车运行图
C. 机车周转图
【单选题】
货物列车在开车后、进站前,应使用列尾装置对___的压力变化情况进行检查。
【单选题】
在通风不良,比较潮湿的隧道内爬坡牵引运行时,要适量撒砂,防止机车___。
【单选题】
列车在接近隧道前,在允许范围内尽量___列车速度。
【单选题】
列车施行制动后不再进行缓解,根据列车减速情况进行追加减压,即可使列车停于预定地点,叫作___。
A. 一段制动法
B. 二段制动法
C. 牵引辅助法
【单选题】
防止列车断钩,坡道起动时,视情况可采用___的方法,随着列车缓解再逐步加大起动电流。
A. 先缓解制动后加载
B. 先加载后缓解制动
C. 直接起动
【单选题】
防止列车断钩,进站停车施行空气制动要适当加长制动距离,初次减压量要小,做到___。
A. “早减压、少减压”
B. 晚减压、大减压
C. 晚减压、少减压
【单选题】
以压力空气作为动力来源,但___用电来控制制动装置的制动、保压和缓解作用。
A. 空气制动机
B. 电空制动机
C. 真空制动机
【单选题】
使用带有闸片的制动钳夹紧安装在车轮两侧或车轴上的制动盘,使其发生摩擦阻力而产生制动作用称为___。
A. 闸瓦制动
B. 盘形制动
C. 轨道电磁制动
【单选题】
制动盘装在车轮上的叫___盘形制动基础制动装置。
【单选题】
凡遇列车中某一车辆制动机发生故障,不能及时修复或因车辆装载的货物规定需停止使用该车制动机等情况时,可以关闭___,同时拉动缓解阀。
【单选题】
一辆车的___,就是在制动管一定的减压速度下经过一定的时间或一定的减压量,制动机必须发生制动作用。
【单选题】
制动管经排气口向大气排气时,制动管中的压力降将沿着列车长度___逐次传播,就是空气波。
A. 由后向前
B. 由中间到两端
C. 由前向后
【单选题】
LKJ-2000监控装置采用___工作方式。
【单选题】
LKJ-2000型监控记录装置事故状态记录器(黑匣子)在机车走行距离每变化___m所有内容记录一次。
【单选题】
预设安全距离为20m时,紧急制动时的速度为80km/h,那么停车后的安全距离是___m。
【单选题】
LKJ-2000型监控记录装置上电自检后,显示器进入主界面显示状态,两端操作___。
【单选题】
LKJ-2000监控装置在正常监控状态下,可用【↓】【↑】方向键调整屏幕亮度,共有___个亮度等级 。
【单选题】
LKJ-2000监控装置在机车出库时,司机必须按压[调车]键,进入调车状态,此时限速窗口显示___km/h。
【单选题】
LKJ-2000监控装置机车距信号机还有一段距离,但距离显示值提前进入零显示,这种零显示出现在信号机之前的过机误差称为___。
【单选题】
LKJ-2000型监控记录装置在机车运行中按压___键,装置记录下此刻的公里标及时间,作为运行数据查找标记。
【单选题】
LKJ-2000型监控记录装置当装置发生防溜报警时一次按压___键。
【单选题】
LKJ-2000型监控记录装置,列车运行过程中按压【向前】键,调整___误差。
【单选题】
LKJ-2000型监控记录装置,运行中当过机误差___300m时,装置可以自动校正。
【单选题】
LKJ-2000型监控记录装置查询当前揭示信息,显示机车前方___米以内的揭示。
【单选题】
LKJ-2000型监控记录装置设定参数查询时在查询显示状态,将光标移到“设定参数”按压【确认】键或数字键___。
【单选题】
LKJ-2000型监控记录装置如果错误选择了某条揭示,可将光标移到该揭示项再次按压___键取消对该揭示的选择。
【单选题】
LKJ-2000型监控记录装置A.B机同时故障时,报警时间达到___min监控装置实施紧急制动。
【判断题】
电子在导体内移动时,导体阻碍电子移动的能力称为电阻,用U表示。