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19.试述HXD1电力机车辅助电气系统供电电路___
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20.试述HXD1电力机车库内供电和库内动车电路如何完成___
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21.HXD1电力机车辅助变压器故障时,如何运行___
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22.试述HXD1电力机车冷却塔的冷却回路___
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23.试述HXD1电力机车冷却塔的结构组成___
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24.试述HXD1电力机车中央控制系统CCU的主要功能___
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25.HXD1电力机车牵引控制系统TCU传动级控制功能有哪些___
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26.试述HXD1电力机车机车故障诊断功能有哪些___
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27.试述HXD1电力机车后备制动阀功能有哪些___
【填空题】
28.试述HXD1电力机车转向架一系悬挂结构有何特点___
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29.试述CCBⅡ制动机“第一步闸”检查、试验标准___
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30.试述CCBⅡ制动机“第五步闸”检查、试验标准___
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31.DK-2制动机出库前操作应注意什么___
【填空题】
32.什么是DK-2制动机外重联模式___
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33.试述DK-2制动机外重联模式操作步骤___
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34.试述DK-2制动机后备制动操作步骤___
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35.试述自动制动阀在常用制动区时的作用___
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36.试述和谐型空气压缩机进气通路___
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37.试述异步牵引电动机的工作原理___
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38.试述和谐型电力机车四象限整流器的作用___
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39.和谐型电力机车牵引变流器由哪些功能模块组成___
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40.CCBII制动机电空控制单元___由哪几部分组成___
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41.列车管控制部分___的作用___
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42.均衡风缸控制部分___的作用___
【填空题】
45.试述和谐型电力机车吸湿器的作用___
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47.和谐型电力机车油流继电器的作用是什么___
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48.和谐型机车采用空电联合制动有哪些特点___
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49.HXD1C电力机车惩罚制动应由什么条件触发___
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50.HXD1C型电力机车合主断时必须满足哪些条件___
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51.HXD1C型电力机车升弓时必须满足哪些条件___
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52.HXD1C型电力机车主司控器手柄无法设定级位时如何处理___
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53.HXD1C型电力机车受电弓模式开关有几个位置___各位置的含义是什么___
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变配电所中用来承担输送和分配电能任务的电路,称为一次电路或电气主接线。___
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阀型避雷器的阀电阻片具有线性特性。___
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工作许可制度是指在电气设备上进行任何电气作业,都必须填写工作票,并根据工作票布置安全措施和办理开工,终结等手续。___
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断路器的额定开断电流表明了断路器的___。
A. 长期允许最大工作电流
B. 灭弧能力
C. 绝缘水平
【单选题】
下列电缆编号属于35KVI段电压互感器间隔的是___。
A. 2UYHB
B. 1UYHC
C. 2YYH
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110KV及以下线路保护测控装置不具备___功能。
A. 三相一次或二次重合闸
B. 过电流保护
C. 断路器保护
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【单选题】
We need to plan ahead in order to ___________.___
A. keep a record of all the events
B. better organize our activities
C. store everything in our head
D. pile up little tasks neatly
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Strategic times are best for us to ___________.___
A. save energy
B. check e-mails
C. study efficiently
D. organize activities
【单选题】
Which of the following could be used as a motivation to do our assignments?___
A. Remembering our urgent tasks.
B. Any activities we're eager to do.
C. Taking a break in the afternoon.
D. The promise to study efficiently.
【单选题】
What can help us to keep refreshed throughout the day?___
A. Doing some physical exercise.
B. Taking a short nap in the afternoon.
C. Rushing through some assignments.
D. Playing a game of chess with a friend.
【单选题】
Which of the following could be the best title for this article?___
A. Study Habits and Time Management
B. Business Management and Leadership
C. University Education and Campus Life
D. Life Goals and Academic Development
【单选题】
It is implied in the text that it is hard to ________.___
A. carry life learning though
B. tell the nature of life learning
C. learn without going to school
D. find a specially trained teacher
【单选题】
According to the author, the schooling framework often ________.___
A. produces slow students with poor memories
B. ignores some parts of the official curriculum
C. fails to provide enough knowledge about life
D. gives little care to the quality of teaching materials
【单选题】
Life learners recognize that learning will not be difficult if they are _________.___
A. clear about why to learn
B. careful to make a time table
C. able to respect other people
D. cautious about any mistakes
【单选题】
According to the author, life learning ________.___
A. could prevent one from running risks
B. could be a road full of trials and errors
C. makes a kid independent of his parents
D. teaches a kid how to avoid being scorned
【单选题】
Through life learning, children ________.___
A. will grow without the assistance from parents
B. will learn to communicate with the real world
C. will be driven to learn necessary life knowledge
D. will be isolated from the negative side of society
【单选题】
A good title for this passage is __________.___
A. Sleep
B. Good Health
C. Dreams
D. Work and Rest
【单选题】
The word drowsy in the last paragraph means __________.___
A. sick
B. stand up
C. asleep
D. a little sleepy
【单选题】
This passage suggests that not getting enough sleep might make you ___________.___
A. dream more often
B. have poor health
C. nervous
D. breathe quickly
【单选题】
During REM, ___________ .___
A. your eyes move quickly
B. you dream
C. you are restless
D. both A and B
【单选题】
The average number of hours of sleep that an adult needs is __________.___
A. approximately six hours
B. around ten hours
C. about eight hours
D. not stated here
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4、Sjogren syndrome___
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2、唇腭裂治疗的新概念是___,即___。常包括以下医师:___及___、___、___。
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3、颌面部外伤后易出现两类窒息:阻塞性窒息和___、阻塞性窒息常见于三种情况:___、___、___。