【填空题】
3.双周检作业中,受电弓弓头及碳滑板检查要求碳滑板上裂纹任何点距滑板侧边距离不小于10mm,碳滑板上裂纹长度不大于100mm,碳滑板上碳滑板缺损宽度不大于5mm,深度不能到达碳滑板的铝托层。___
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【填空题】
4.空气弹簧的紧急弹簧和气囊外观、与车体连接的固定螺栓紧固状态检查要求气囊无鼓包,表面裂损长度小于30mm,深度小于0.5mm,宽度小于2mm。___
【填空题】
5.三月检受电弓清洁降弓位置指示器和上方铝板,测量间隙为5-10mm。___
【填空题】
6.停放制动不同于一般的充气→制动,排气→缓解,它是通过弹簧作用力而产生制动作用,能满足列车较长时间断电停放的要求。___
【填空题】
7.为防止空簧破裂时发生车辆倾斜,两个转向架通过差压阀的连接来平衡空簧内的压力空气。___
【填空题】
8.长沙地铁1号线风源系统可视回油单向阀由可视回油观油镜和单向阀组成。___
【填空题】
9.长沙地铁1号线风源系统进气阀由进气止回阀与泄压阀两部分组成。___
【填空题】
10.动圈麦克风灵敏度低,因此特别适合在嘈杂环境中讲话,在人工广播时乘客听不到环境噪音。___
【填空题】
11.当列车正常激活后,激活端广播控制盒上主机灯显示为绿色。___
【填空题】
12.车门MVB 网络系统是冗余的,一旦其中1 个主门控器出现网络故障,则MVB 网络通过第另1个主门控器继续通讯。___
【填空题】
13.车门直流电机上设有磁性编码器 门位置传感器 ,位于电机轴上用于电机速度检测,EDCU可根据此信号来确定门运动速度和位置。___
【填空题】
14.空调紧急逆变器输出的电压为AC220V。___
【填空题】
15.长沙地铁1号线车辆转向架的轮缘润滑方式采用湿式润滑装置。___
【填空题】
16.单个空调机组的总风量为≥4000m3/h/机组,新风量为≥ 1300 m3/h/机组___
【填空题】
17.每台空调机组制冷时部件启动顺序为送风机、冷凝风机、压缩机。___
【填空题】
18.MVB根据传输介质不同分ESD、EMD、OGF。___
【填空题】
19.每列车装有6 个中继模块REP,分别安装于各节车辆中,REP 提供信号的中继放大。___
【填空题】
20.NRM模式下,列车在非零速时操作紧急解锁装置,车门被解锁,列车启动未出站台___将实施紧急制动,待列车停止后乘客手动开门。___
【填空题】
21.长沙地铁1号线列车当电网电压在1000V~1850V之间变化时,主电路能正常工作,并方便地实现 牵引-制动 的无接点转换。___
【填空题】
22.长沙地铁1号线列车DCU具备当列车控制与诊断系统出现故障时,可用硬线实现紧急牵引功能。___
【填空题】
23.长沙地铁1号线列车DCU可实时监测VVVF逆变器及DCU的故障,故障数据包括故障信息和历史数据。___
【填空题】
24.长沙地铁1号线列车电-空转换点速度为 3-8km/h______
【填空题】
25.长沙地铁1号线列车在牵引或制动工况时,通过触发导通斩波模块,能抑制因空转等原因引起的瞬时过电压。___
【填空题】
26.长沙地铁1号线列车的制动电阻安装于车辆底架下,每节动车一个,采用强迫风冷冷却方式___
【填空题】
27.长沙地铁1号线非永磁列车每个动力转向架安装两台190kW的牵引电机,控制方式为车控。___
【填空题】
28.长沙地铁1号线列车蓄电池正常情况下的电池开路电压为2.15±0.02V___
【填空题】
29.长沙地铁1号线列车蓄电池充电设备系统浮充电状态时恒压充电电压为2.25±0.02V。___
【填空题】
30.长沙地铁1号线列车蓄电池单体采用阀控式胶体密封铅酸蓄电池___
【填空题】
31.长沙地铁1号线列车当制动电阻带温度超过阀值640℃时,触点断开___,温度保护装置就会给系统一个信号,牵引逆变器切除电制动,从而保护制动电阻装置。___
【填空题】
32.1号线列车网络采用 8 位的循环冗余校验___方式。___
【填空题】
33.在电客车制动时,牵引电传动系统优先进行再生制动,最大限度地将能量返回电网___
【填空题】
34.牵引逆变器作为整个交传系统的重要组成部分,它的基本功能是,把从直流电源获得的直流电压变换成频率和幅值都可调的三相交流电,并给牵引电机供电。___
【填空题】
35.中继模块REP 作为列车级总线和车辆级总线的网关,实现数据转发功能。___
【简答题】
双塔干燥器功能检查内容有哪些?(摘自年检规程)
答:双塔干燥器工作周期为一分钟干燥一分钟再生,共两分钟。由干燥状态向再生状态(或由再生状态向干燥状态)转换时会向外部排气,监察时应听到排气声音,并观察干燥器内侧指示灯显示情况,绿色长亮为正常工作状态,绿色闪烁或无光亮为故障状态。
【简答题】
长沙轨道交通1号线制动系统中电子中继阀主要由哪些部件组成?(摘自车辆检修工教材)
答:1)中继阀(RLY)
2)紧急电磁阀(EMTMV)
3)紧急切换阀(EMTV)
4)大流量制动电磁阀(AMVH)和小流量制动电磁阀(AMVL)
5)大流量缓解电磁阀(RMVH)和小流量缓解电磁阀(RMVL)
6)制动控制压力传感器(BCCT)
【简答题】
简述长沙地铁1号线空压机油气室作用。(摘自车辆检修工教材)
答:油气室构成主机机体的一部分,它的作用是:一是储存润滑油,二是压缩空气的含油气体,在油气室经撞击转折使油、气分离(称粗分),这时气体中的油液99%以上被分离。
【简答题】
简述长沙地铁1号线采用的风源系统结构及功能(摘自车辆检修工教材)
答:整体吊架、空气压缩机、空气净化处理装置和电控单元四大主要部件构成。
风源系统整体吊架连接支撑风源系统上各零部件,并与轨道车辆的底架相连。
空气压缩机采用了由三相交流电机驱动的螺杆空压机,它是压缩空气的产生装置。
空气净化处理单元主要由吸附式干燥器、灰尘过滤器、气水分离器、高效过滤器等组成。空压机产生的压缩空气,通过气、水分离器、高效过滤器过滤后再经干燥器进行干燥,然后由灰尘过滤器收集压缩空气自带的和干燥过程中产生的灰尘,最后将干燥清洁的空气供给机车车辆风缸。
控制单元由压力控制器、空气净化处理单元控制电路、外部供风控制开关组成。风源系统将各控制信号传递给机车车辆控制系统,从而实现对整个风源系统的控制。
【简答题】
简述长沙地铁1号线螺杆式压缩机中的最小压力阀作用。(摘自车辆检修工教材)
答:最小压力阀安装在机体上,位于油细分离器座的后部,初始开启压力为0.4~0.6MPa,其功能有三:
1)空压机运行之初,压力低于0.6MPa时,阀板处于关闭状态,气体并无输出,以便于保证空压机优先建立起润滑油循环所需之压力,确保系统冷却、密封、润滑之需要。
2)压力超过0.6MPa,阀板开启,这可降低流过油气分离器的空气流速,确保油细分离效果,保护油细分离器不会因压差太大而受损。
3)停机时,空压机泄压,系统压力下降,在外部空气压力和弹簧的作用下阀板关闭,以防止系统外高压气回流,起到止回作用。
【简答题】
客室门系统锁闭单元各个工况下的工作过程?(摘自维修手册)
答:(1)关门状态下:制动盘与飞轮咬合,飞轮被制动,此时无法开门。
(2)电动开门时:电磁锁闭装置得电,齿轮盘与飞轮分离,丝杠和飞轮可以朝开门方向转动,实现开门。
(3)手动解锁时:可通过转动紧急操作装置拉动钢丝绳,在解锁板的作用下齿轮盘与飞轮分离,同时触发紧急解锁开关实现手动解锁。手动解锁后若要实现开门则紧急操作装置必需保持在“解锁”位。
【简答题】
试分析空调预冷模式:(摘自维修手册)
答:如果系统一开机即检测到温度Ti>27℃,则执行预冷模式。新风阀关闭,回风阀打开,机组执行全回风模式。当接收到MVB 网络预冷结束命令,或者当室内温度达到目标温度时,或者预冷持续15 分钟后,预冷状态结束,此时系统新风阀,回风阀均打开。
【简答题】
哪些情况下,TCMS 将取消发向所有的DCU 的牵引指令及牵引/制动设定值?(摘自维修手册)
答:(1)司机室连锁故障;
(2)牵引系统方向故障;
(3)车门未全部关闭,且无“车门旁路”信号;
(4)列车停放制动未缓解,且无“停放制动缓解旁路”信号;
(5)列车安全环路断开或者列车完整性环路断开;
(6)制动系统触发紧急制动(针对紧急制动列车线到某个制动系统的硬线断落这种情况);
(7)列车发出牵引指令后,5秒内列车仍然不能缓解所有制动。
(8)列车总风管压力低于5.5bar,且无“总风压力旁路”信号;
(9)列车速度大于 5Km/h,非制动工况下检测到列车制动未缓解
推荐试题
【单选题】
大气的运动变化是由什么引起的。___
A. 冷热不均
B. 水汽交换
C. 地壳运动
D. 万有引力
【单选题】
对细胞的概念,近年来比较普遍的提法是:有机体的___
A. 形态结构的基本单位
B. 形态与生理的基本单位
C. 结构与功能的基本单位
D. 生命活动的基本单位
【单选题】
自然界的生物可以分为三大类,这就是___
A. 动物、植物与微生物
B. 海洋生物、陆地生物与高山生物
C. 动物、植物与昆虫
D. 高等生物、低等生物与微生物
【单选题】
香樟是一种在长江三角洲地区常见的树种,它是属于 ___
A. 常绿针叶树种
B. 落叶针叶树种
C. 常绿阔叶树种
D. 落叶阔叶树种
【单选题】
老虎与豹是属于同一科大动物。下列动物中也属该科的是___
【单选题】
生物是人类不可缺少的“朋友”,但目前正遇到___
A. 人工培育威胁
B. 种类减少威胁
C. 自相残杀威胁
D. 天外来客威胁
【单选题】
被发现在南非的古沉积岩中,地球上最早出现的绿色植物是___
A. 蕨类植物
B. 地衣
C. 蓝藻
D. 苔藓
【单选题】
植物、藻类利用叶绿素产生的光合作用过程中,在可见光的照射下,能将二氧化碳和水转化为有机物,释放出的是 ___
【单选题】
呼吸作用是生物体内的有机物在细胞内经过一系列的氧化分解,在释放出能量的同时,最终生成的主要是 ___
A. 氧气
B. 二氧化碳
C. 氮气
D. 不知道
【单选题】
晚上,植物与动物都不应该放入卧室内,要将其移到卧室外,这是因为它们会降低卧室内的___
A. 空气温度
B. 空气湿度
C. 氧气浓度
D. 氮气浓度
【单选题】
杂交优势往往在第几代杂交种子中表现最明显。___
【单选题】
以下不属于人体增强技术类型的是___
A. 短暂性增强
B. 持续性增强
C. 结构性增强
D. 内在增强
【单选题】
大陆漂移学说是由谁提出的___
A. 勒比雄
B. 魏格纳
C. 赫斯
D. 李四光
【单选题】
(1)Whieh of the following descriptions about the characteristics of physiology is wrong?___
A. It is the study of how living organisms work.
B. It illustrates the discipline of the development and the evolution of disease and the essence of disease.
C. It is to study the living phenomena and the function activities of living organs.
D. It is to explain how they are regulated and integrated.
【单选题】
(2) Which of the following are specialized in producing force and movement?___
A. muscle cells
B. connective tissues
C. nerve cells
D. epithelial cells
【单选题】
(3)The fluid environment surrounding each cell is called the___
A. intracellular fluid
B. intracellular fluid
C. internal environment
D. external environment
【单选题】
(4) Which of the following is not the fundamental characteristic of living organisms?___
A. metabolism
B. adaption
C. reproduction
D. passive diffusion
【单选题】
(5)Whicl of the following is a physiological process with negative feedback?___
A. blood coagulation
B. process of passing urine
C. sino-aortic baroreceptor reflex
D. process of parturition
【单选题】
(6)Which of the following is not the characteristic of regulation by hormone?___
A. diffusenin nature
B. longer in duration
C. accurate in action
D. action in overcorrection
【单选题】
7)Which of the following is not the characteristic of cells?___
A. They are bound by the plasma membrane
B. They have the ability to break down large molecules to smaller ones to Liberate energy for their activities
C. They possess a nucleus which contains genetic information in the form of deoxyribonucleicacid(DNA).
D. Living cells can not transform materials.
【单选题】
8)The breakdown of large molecules to smaller ones is called___
A. respiration
B. anabolism
C. catabolism
D. absorption
【单选题】
9) Which of the following descriptions about the characteristics of nervous regulation is wrong?___
A. It responds fast
B. It acts exactly
C. It responds slowly.D.
D. uration is short
【单选题】
10)Which of the following descriptions about the control of body function is wrong?___
A. Homeostasis is kept by feedback control.
B. Negative feedback minimizes the changes, leading to stability.
C. Positive feedback is not useful.
D. Feed-forward makes human body foresee and adapt itself to the environment promptly.
【单选题】
(1)Which of the following parts of knowledge of drugs should be included in pharmacology?___
A. The effects of drugs on man
B. The correlation of biological activity with chemical structure
C. The history, source, physical and chemical properties, compounding, biochemical and physiologicaleffects, mechanisms of action, absorption, distrilbution, biotransformation and excretion.
D. The prevention, recognition, and treatment of drug poisonings
【单选题】
(2)Which of the following is what a clinician is primarily interested in according to the text?___
A. Drugs which can be reasonably limited to those aspects that provide the basis for their rational clinical use
B. Chemical agents that are not used in therapy but are commonly responsible for household and industrial poisoning as well as environmental pollution
C. Drugs which are useful in the prevention,diagnosis and treatment of human disease,or in the prevention of pregnancy.
D. rugs which are useful in the prevention, diagnosis and treatment of human disease, or in the prevention of pregnancy.
【单选题】
(3)Why was the physician not interested in pharmacognosy?___
A. He didn't have to select the proper plants for his prescription
B. He had a broad botanical knowledge
C. Fewer drugs were obtained from natural sources
D. Natural drugs had little difference with synthetic ones
【单选题】
(4)Which of the following is the best way of studying pharmacology for medical students and practitioners?___
A. to have a broad botanical knowledge
B. to select a plant and its preparation
C. to have the ability to purify natural plants
D. to have curiosity that stimulates them to learn about sources of drugs
【单选题】
(5)What are the tasks related to medicines almost complete!y delegated to the pharmacists now?___
A. the physical and chemical properties of medicines
B. the preparing, compounding, and dispensing of medicines
C. dosage forms of medicines available
D. the therapeutic and other uses of medicines
【单选题】
(6) What is a main unique aspect of pharmacodynamics?___
A. Pharmacodynamics is an experimental medical science
B. Pharmacodynamics is focused on the characteristics of drugs
C. Pharmacodynamics borrows freely from both the subject matter and the experimenta techniques of physiology, biochemistry, microbiology, genetics and pathology
D. Pharmacodynamics correlates the entire field of preclinical medicine
【单选题】
7) What time of history does pharmacodynamics date back to?___
A. the second half of the seventeenth century
B. the second half of the eighteenth century
C. the second half of the nineteenth century
D. the second half of the twentieth century
【单选题】
8)What does the research on pharmacodynamics focus on?___
A. study of clinical effect of drugs
B. study of the process of drugs in the body
C. study of the effect and the mechanism of drugs on the body
D. study of the correlation of the actions and effects of drugs with their chemical structure
【单选题】
(9)Which of the following is true when drugs are selected?___
A. It has to be based in part on legal reasons.
B. It has to be based in part on ethical reasons.
C. It has to be based in part on the pharmacological evaluation in man
D. It has to be based in part on the pharmacological evaluation in animals
【单选题】
(10)Why are chemotherapeutic agents useful in therapy?___
A. They stimulate or depress biochemical or physiological function in man in a sufficiently reproducible manner to provide relief of symptoms or, ideally, to alter favorably the course of disease
B. They can produce desired effects with only tolerable undesired effects
C. They have only minimal effects on man but can destroy or eliminate parasites
D. The selectivity of their effects is one of their most important characteristics
【单选题】
1)H. Mario Geysen initially used parallel synthesis as a quick way to identify which small_____ of any given large protein bound to an antibody.___
A. division
B. pieces
C. part
D. fragment
【单选题】
2)Chemists often start a combinatorial synthesis by attaching the first set of building blocks_____ to microscopic beads made of polystyrene.___
A. solid
B. inert
C. soft
D. active
【单选题】
3)The chemical reactions required to link compounds to the beads and later to detach them____ to the synthesis proces.___
A. induce complications
B. make easy
C. introduce complications
D. introduce easy
【单选题】
4)In a parallel synthesis, all the products are_____ separately in their own reaction vessels.___
A. combined
B. assembled
C. joined
D. assorted
【单选题】
(5)In many laboratories today, robots assist with the routine work of parallel synthesis, such as small___ amounts of reactive molecules into the appropriate wells.___
A. sending
B. transporting
C. delivering
D. giving
【单选题】
(6)Scientists can pull out from the mixture the beads that bear biologically active molecules and then,using sensitive detection techniques,___ the molecular makeup of the compound attached.___
A. determine
B. make sure
C. find
D. search
【单选题】
(7)Most pharmaceutical companies today continue to___ parallel synthesis. Which of the following is not appropriate to be filled in the blank?___
A. count in
B. count on
C. depend on
D. rely on