【填空题】
4.In the story ,the little girl has a _________ stepmother, who makes her life a misery.
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5.Nothing ever becomes real till it is experience-even a proverb is no proverb to you till your life _________ it.
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6.Nowadays almost all libraries are finding it increasingly difficult to remain within their _________.
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7.You can increase a tyre’s grip in winter by slightly _________its pressure.
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8.Lake Superior, Huron, Erie, and Ontario are shared by the United States and Canada, and from part of the _________between the two countries.
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9.The police are investigating the three men allegedly _________organizing and carrying out the bank robbery.
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10.I do not doubt in the least that inflation leads to _________decline.
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11.A blizzard _______________great drifts of snow across the lake.
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12.Tim says _________everybody will be affected by the tax increase, but I’m sure he’s exaggerating.
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1.China’s economic success over the past three _________has raised the living standards of hundreds of millions of Chinese citizens.
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2.Citibank picked the chief executive of Etang.com as its first Chinese customer Thursday to open an account at its new branch in the _______Pease Hotel along Shanghai’s fabled waterfront.
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3.The United States last Wednesday _________tariffs关税 of up to 30 percent on a range of foreign steel imports to help protect its domestic国内的industry.
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4.Although he was raised as a Christian, he’s not really very _________.
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5.You can distinguish between frogs ands toads蟾蜍 in the following way: frogs have _________bodies, long limbs, and a smooth skin, and toads have stouter bodies, short limbs, and dry skin.
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6.From the airplane window I could see a _________of city streets.
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7.Aunt Pat smiled at her little niece and _________her to eat.
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8.Dr. Rich Hamilton is planning his own World Wide Web _________on the Internet to provide assistance to anyone who asks for medical help.
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9.It is difficult to estimate the number of people doing part-time jobs _________
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10.The president _________his foreign minister, Mr. Burns, to act as representative to the international conference to be held in Tokyo next month.
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11.Advances in telecommunications have meant that it is just as easy to work from a computer _________at home as it is from a town center office.
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12.Until the new gym is built, you have no option but _________existing buildings which may or may not suit your immediate目前的requirements.
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1.According to some scientists, global warming _________the survival of the whole human race.
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2.The number of visitors from parts of Scotland not including the Edinburgh area was, in fact, relatively small19%, and exceeded the number of overseas visitors16%_________.
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3.The early Spaniards established a chain of mission _________the local population along the San Antonio River.
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4.It was common practice then that when the store owners wanted to go on vacation they simply _________
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5.As they didn’t have relatives or friends there they often _________around nearby malls when they got bored.
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6.To make a birthday card, you can simply cut out some funny or pretty pictures from magazines, _________them _________a piece of card and then write your message inside.
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7.She picked up the receiver and, _________ asking the caller to hold on, went off to tell Jack that he was wanted on the phone.
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8.To relax himself for a little while, he rose from the computer desk, walked across the room towards the window and stretched both arms upwards and _________.
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9.The new product has a pair of small loudspeakers fitted inside, which you can easily _________ your computer’s sound card.
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10.Music in fact is a _________language of a non-verbal nature which is rich in expression.
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11.This _________is designed to show at a glance how many rooms have been rented out and how many are still available.
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12._________ glorious sunshine, the boundless stretch of corn fields looked an impressive sight.
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1.The cook put the meat on a plate, _________it with salt and pepper, wrapped up the plate in aluminum foil铝箔 and then placed it in the oven to roast.
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2.Every waking moment we talk to ourselves about the things we experience. Our self-talk, the thought we communicate to ourselves, _________control the way we feel and act.
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3.John made everyone laugh when he got the words _________and referred to himself as “my husband’s wife”.
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4.You can’t live a perfect day without doing something for someone who will perhaps never be able to _________you.
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5.Because the Earth is a sphere, sailors _________only can view other ships to a distance of about 13 miles before those ships seem to disappear into the horizon.
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6.Johnson dismissed _________ideas lightly as no good on several occasions.
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7.One tends to believe whatever one repeats to oneself sufficiently often, whether the _________be true or false.
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8.Susan told me numerous times how her sister _________children.
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【单选题】
使用电阻制动时，客运机车速度不应超过___。
A. 90km／h
B. 100km／h
C. 120km／h
【单选题】
在充电电阻RC两端并联过压保护电路，保证辅助发电机电压过高或充电电流超过___时，自动转入固定发电工况。
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主电路的接地保护工作原理是：当DJ线圈流过的电流达到0．5A时动作，其常闭触点断开切断___线圈电路，柴油机卸载。
A. LC及LLC
B. LLC及1-6C
C. LC及1-6C
【单选题】
东风4B型无级调速的机车柴油机转速在848r／min时电阻制动时的最大励磁电流为___左右。
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运行中蓄电池放电的原因之一是启动发电机熔断器___烧损。
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磁场削弱电阻过热烧损的主要原因是某牵引电动机___连线断路。
【单选题】
运行中，启动发电机电压突降为零的原因之一为自动开关___跳开。
【单选题】
使用接地开关DK及故障开关GK，均无法排除DJ动作的原因之一是___。
A. 主电路负端大线接地
B. 主电路正端大线接地
C. DJ动作值变大
【单选题】
使用电阻制动时，如励磁电流过大超过___A时，为励磁电流传感器故障。
【单选题】
2RD、3RD熔断后，需更换___A的熔断片。
【单选题】
JZ-7型空气制动机非操纵端自阀手把误放运转位时，当操纵端自阀施行制动时，操纵端中继阀排风口___。
【单选题】
JZ-7型空气制动机工作风缸充气止回阀胶垫不平整，阀口有损伤，有异物时，将工作风缸压力空气漏入___为内漏。
【单选题】
JZ-7型空气制动机客货车转换阀置于货车位，自阀手把制动区．过减位，取柄位制动管都不能保压时，为___泄漏。
【单选题】
JZ-7型空气制动机自阀制动，机车制动缸压力不能按比例上升，且不能保压，工作风缸指示压力下降，为___泄漏。
【单选题】
JZ-7空气制动机常用限压阀是当常用制动时，限制作用风缸压力不超过___。（条件：列车制动管定压500kPa时，）
A. 300kPa
B. 350kPa
C. 420kPa
【单选题】
JZ-7型空气制动机自阀制动后，工作风缸压力正常，机车制动缸压力逐渐增高，为___泄漏。
【单选题】
JZ-7型空气制动机客货车转换阀置于货车位，制动后保压良好，但降压快，自阀手把前2位增压缓慢时，为___及管路泄漏。
【单选题】
JZ-7型空气制动机使用自阀操纵，机车制动、缓解不良，但使用单阀操纵正常时，为___故障。
【单选题】
NPT5型空气压缩机泵风压力由0升到900kPa时，两组所需时间不得超过___min。
【单选题】
JZ-7型空气制动机过充压力的消除，主要依据过充风缸本身___mm小孔控制缓慢进行。
【单选题】
JZ-7型空气制动机均衡风缸小漏时，自阀手柄取柄位时，均衡风缸排气时间小于___s。
【单选题】
JZ-7型空气制动机单阀调整阀供气或排气部分泄漏，均会使阀盖下方缺口___。
【单选题】
平稳操纵装置B型切控阀因增加了一个容积为___L的气室，使装有切控阀的机车达到上闸晚、缓、少的目的。
【单选题】
JZ-7型空气制动机工作风缸充气止回阀充气限制堵堵塞时，使工作风缸压力由零增至480kPa的时间超过___s。
【单选题】
客运机车加装的平稳操纵装置B型切控阀属于___压力构造，它根据制动管的压力变化同JZ-7分配阀一起完成机车的制动、缓解和保压作用。
【单选题】
根据当前机车技术状态及生产技术水平，东风4型机车检修周期规定小修为___万km。
【单选题】
牵引装置日常维修要求缓冲器座内状态良好，其松动量不大于___。
【单选题】
柴油机组装调整对系统水压试验时要求在___min内无泄漏。
【单选题】
柴油机组装调整时，并列连杆大端间须有不少于___mm的间隙，并能沿轴向自由拨动、无卡滞。
【单选题】
保持阀的功用是将降压风缸的压力空气保持在___。
A. 340～360 kPa
B. 280～340 kPa
C. 420～450 kPa
【单选题】
机车牵引销顶面与销座槽底面间隙应为___mm。
A. 0.5-4
B. 1.0-5
C. 1.5-6
【单选题】
机车检修修程规定：小修时对机车全面检查，___解体检修。
A. 主要部件
B. 关键部件
C. 各部件管系等
【单选题】
机车检修时，转向架与车体侧档间隙左右之和应为___mm。
A. 38-42
B. 28-32
C. 18-22
【单选题】
控制机油温度的感温元件的作用温度为___℃。
A. 55—65
B. 65-75
C. 75-85
【单选题】
温度控制阀装在静液压泵的___管路上。
【单选题】
机车段修时，撒砂管距轮箍与轨面接触点的距离为___nun。
A. 350±20
B. 250±32
C. 150±20
【单选题】
机车段修时，油、水管路每处法兰橡胶石棉垫片的厚度不大于6mm，总数不超过___片。
【单选题】
东风4机车上冷却风扇的最高转速是：___r／min。
【单选题】
中修时对车钩的尺寸限度正确要求是：___。
A. 车钩高度为815—890mm
B. 锁闭位的车钩开度为100—127mm
C. 车钩高度为835-885mm
【单选题】
运行中柴油机突然停机，属于柴油机方面的原因之一___故障。
A. 1-2YJ
B. 柴油机主机油泵
C. 柴油机水泵
