汽车诊断与检测技术期末考试试卷

management systems and measures established by, and a number of pragmatic, combined part-time workforce education information, the protection of the digital campus construction and sustainable development. Six Bureau attaches great importance to information technology security, information technology security, entrust XX City Center for educational information and equipment dedicated to the work. Network security leading group was set up, chaired by the Education Bureau Chief, head, for XX education Metro-network and information security emergency response leadership. Deputy group leader for XX educational metropolitan area network and information security emergency response coordination, command. The team assist leader and deputy leader, responsible for network XX network security and information . Team. Information security work Conference held each semester, and deployment of information security of documents issued on a regular basis. Information security assessment is included in the annual index. Strictly implement the information security budget to ensure information security of investment. By XX, education information and equipment Centre XX network network security and information security. According to the information technology security requirements, issued a document requires schools (units) implement, defined the information security guidelines, specific work practices, procedures, and requirements. Clear industry information security incidents (accidents) to detect, report and disposal processes. According to self-examination, the school (units) basic established has network security management system; the school (units) according to this units actual, established has units personnel management, information system room management, and equipment management, and media management, and network security construction management, and shipped dimension management, and service outsourcing, management system; developed has computer and the network of network security responsibility held system, signed has network security responsibility; website of information management personnel is responsible for confidential management, password management, on computer enjoys independent right, User name and password of the computer for its proprietary, and release of provisions is prohibited, such as leaks, investigated for responsibility. According to who is in charge of whos in charge, who is running and who is responsible for, who uses principles of who is in charge of management schools (units) defined the roles and responsibilities of information security, assurance responsibilities to schools. XX city schools (units) total site 20, 19 of which were not classified security protection assessment, of which 1 (XX education and resource network) for classified security protection levels, without third-level information systems. Total education information systems 1 (XX education cloud platform), contains features with e-Government, resource library, test database, mail services, such as e-books, all intranet services. No for grade protection grading record and evaluation of school (units), requirements the school (units) according to information security grade protection about policy and standard, organization carried out information security grade protection security management system construction, and technology measures construction and grade evaluation, implementation grade protection system of the requirements, makes information system security management level obviouslyfacility up to 160 million Yuan, according to the standard, high quality planning XX educational metropolitan area network realizes Wan Zhaokuan to schools, hundreds of megabytes of broadband to the table, wire (ie: Web, video, audio) to the target, electronic whiteboards, multimedia classrooms, remote interactive video teaching system of modern educational equipment in the classroom. . With Intel company on XX Education City domain network of topic case design, relies on Cisco company thought Shu aid chuan project staff free provides has three years technology support, from 2009 began, according to high standards, and high of work thought, and manpower planning, and points step implementation, using school earthquake Hou reconstruction of opportunities, again planning elementary and middle schools campus network and education city domain network, and local broadcasting network company cooperation, using broadcast TV network, will physical fiber laying to each school, to minimum of cost achieved has physical fiber school school pass; Each school construction standards of campus network and network access to all rooms; XX education metropolitan area network center machine room equipment in the Ministry of education standardization management platform, the Central Library of audio-visual education resources, set up a Chinese teacher education cloud platform, implemented links the two platforms. At present, the citys primary and middle school students to computer 3198, vitality than 10:1; 809 equipment classes through the classroom (primary and secondary); 36 of the campus network. The establishment of an advanced, practical Gigabit educational metropolitan area network, the citys schools have access to educational metropolitan area network, schools have computer networks, closed-circuit television network, broadcast networks into the classrooms, realize the triple play. Schools share Internet bandwidth, can meet the needs of teaching of the school office and at any time. According to Ministry of education on full started implementation teaching points digital education resources full cover project of notification (taught technical letter (2012) 74th,) and XX Province Department of education on issued XX province teaching points digital education resources full cover project implementation views of notification (chuan taught letter (2013) 18th,) requirements, I city 6 a teaching points implementation teaching points digital education resources full cover project, combined I city specific situation, developed issued has XX City Bureau on teaching points digital resources full cover project of implementation programme, Established XX, full coverage of digital resources in modern distance education teaching project leading group, XX, chaired the Secretary for education. Established, digital resources in modern distance education teaching, XX full coverage project group, XX, Director of the Center for educational information and equipment chaired Zhu Guiyan, responsible for distance education digital resources covering project work. Projects in XX city school digital resources in modern distance education teaching full-coverage project leading group, digital resources in modern distance education teaching, and XX full coverage project group leadership and organization, in accordance with the unified arrangement of the whole province, responsible for university education digital resources covering project management and implementation. According to provinces arrangements, I Center has arrangements Gong选择题1、传动系功率消耗可在（A ）上进行检测。A 惯性式底盘测功试验台 B 离合器打滑频闪测定仪 C、传动系游动角度检测仪2、离合器分离不彻底的原因之一是（B ）。A 自由行程过小 B 自由行程过大 C 从动摩擦片有油污3、转向系的齿轮啮合间隙调整不当会造成（A ）故障。A 转向盘自由转动量过大 B 自动跑偏 C 前轮摆振4、车轮不平衡会造成（C ）故障。A 转向盘自由转动量过大 B 转向沉重 C 转向轮摆振5、启动发动机前如果点火开关位于“ON”位置，电动汽油泵（D ）。A 持续运转 B 不运转 C 运转10s 后停止 D 运转2s 后停止6、二气体分析仪能检测哪两种气体的含量？（ B ）A CO,NOx B CO,HC C CO,CO2 D NOx, HC7、车速表的指示值V1和实际车速V2的关系是？( A )A V1V2， B V1V2， C V1=V2，8、变速器缺油或油质变坏，将造成变速器（C ）故障。 A、跳档 B、乱档 C、异响9、故障灯自诊断触发后，故障灯（ B ）A不亮 B有规律的闪烁 C长亮10、停车后，怠速控制阀（ A ）A 全开 B 全闭 C 半开11、从排气管上拆下氧传感器，观察其端部颜色，当为（A ）时，氧传感技术状况正常A、淡灰色 B、黑色 C、棕色 D、白色12、自动变速器从N挡换入D挡的时滞时间一般应小于（ B ）A、0.51.0s B、1.01.2s C、 1.21.5s D、152.0s13、测量汽车燃油消耗量时，较为常用的是（B ）A、流量法 B、容积法 C、流速法 D、压力法14、在空载状态情况下，驻车装置应能保证机动车在坡度为20%（对总质量为整备质量的1.2倍以下的机动车为15%）、轮胎与路面间的附着系数不少于0.7的坡道上正反两个方向保持固定不动的时间应为_； （ C ）A.10min； B.15min； C.5min； D.足够长的时间15、最高车速大于70km/h的汽车采用两灯制前照灯时，新注册车(在用车)的发光强度不低于 B cd。 A. 15000 B. 18000 C. 12000 D. 1000016、检测车辆的制动力时，在制动力增长全过程中同时测得的左右轮制动力差的最大值，与全过程中测得的该轴左右轮最大制动力中大者之比，对前轴(对后轴若轴制动力不小于该轴轴荷的 60%时)不应大于 A 。 A. 24% B. 10% C. 15% D. 20%17、GB7258-2004规定，四轮汽车应有适度的 B 转向特性。 A. 过多 B. 不足 C. 中立 D. 轻便18、检测汽车侧滑量时，汽车应B。 A. 高速驶过侧滑试验台 B. 低速驶过侧滑试验台 C. 停在试验台滑板上 D. 驶过平板式制动试验台19、在5工位安全环保检测站中，检查灯光是否齐全、有效应在 D 工位进行。 A. L工位 B. ABS工位 C. P工位 D. HX工位20、现行国标规定，在检测汽油/柴油车的排气污染时应进行 D 试验。 A. 高怠速 B. 低怠速 C. 双怠速 D. 自由加速21、目前，我国测得柴油车废气排放量是（ B ）工况下进行的。A大负荷 自由加速 C怠速 D任意22、（A）是衡量发动机是否大修的重要依据之一。A汽缸的磨损程度 B活塞的烧蚀程度C汽缸体或汽缸盖的变形程度 D曲柄连杆机构损坏23、二氧化锆式氧传感器的电压范围是（B ）。A0.010.09V B0.10.9V C19V D1090V24、测试灯电压值为（C ）。A3V B6V C.12V D220V25、自动变速器的清洗换油周期里程一般为（ B ）万公里左右。A24 B68 C1416 D202226、用谐振式悬架装置检测台检测汽车悬架特性时，吸收率应不小于（C）A 20% B30% C40% D50%27、最高设计车速不大于100km/h的机动车，其转向盘自由行程的最大转动量不允许大于（ B ）。 A10 B20 C30 D40 28、方向盘转向力应符合以下要求：机动车在平坦、硬实、干燥和清洁的水泥或沥青道路上行驶，以（ A ）的速度在5s之内沿螺旋线从直线行驶过渡到直径为（ ）的圆周行驶，施加于方向盘外缘的最大切向力不应大于245N。A）10km/h 25m B）15 km/h 15mC）20km/h 30m D）25km/h 40m29、机动车运行安全技术条件中规定，轮胎横向和径向摆动量，小型汽车不大于（ D ）；其它车辆不大于（ ）。A 8mm 5mm B 2mm 4mm C 3mm 6mm D 5mm 8mm30、修理后的汽车的滑行性能要求：在平坦干燥的硬质路面上以30km/h的初速度滑行时，滑行距离应在（ C ）m以上。A 300 B 100 C 230 D 43031、所谓高怠速是指发动机（C）。A 额定转速 B 70%额定转速 C 50%额定转速 D30%额定转速填空题1、检测点火正时的方法有_人工经验法，闪光正时灯法，缸压法等2、最大设计车速大于或等于 100km/h 的机动车，其转向盘的最大转动量不得大于_10度_ ；最大设计车速小于100km/h 的机动车，则不得大于_15度_3、底盘测功试验台，一般由滚筒装置、功率吸收装置(即加载装置)、测量装置、辅助装置四部分组成。4、电子点火系统与传统点火系统比较，主要增加了点火控制器和点火信号传感器，取消了断电器 。5、用谐振式悬架装置检测台检测汽车悬架特性时，其评价指标为吸收率；用平板式检测台检测汽车悬架特性时，其评价指标为悬架效率。6、当五轮仪用于检测汽车制动性能时，曾测出制动初速度、制动距离和制动初速度 等参数7、次级点火的燃烧电压的大小取决于 点火能量、混合气的浓度、气缸压力等等。8、预处理系统能对发动机所有传感信号进_衰减、 滤波、 放大、 整形_四个步骤的处理，并将所有脉冲信号和数字信号直接输入CPU的输入端。9、在汽车静止发动机运转的情况下，可以通过_振动法_、_加热法_、_淋水法_、_电负荷满载法_四种方法对发动机进行故障征兆模拟试验。10、前照灯的特性分为_光特性_、_全光束_、_照射方向_三部分。11、曲轴位置传感器有磁脉冲式、光电式、霍尔式三种型式。12、测量误差主要来源于系统误差、环境误差、方法误差和人员误差等13、传统汽油机（化油器式）燃料系的故障，主要表现在漏油、堵塞和机件损坏三个方面。14、检测诊断的主要内容包括：汽车的安全性、_可靠性_、_动力性_、_底盘输出功率_、经济性及噪声和废气排放状况等。15、在进行发动机技术状况诊断时，可以应用发动机检测设备，重点检测出与发动机功率、_燃料消耗_、_排放污染物 和磨损等有关的诊断参数，与诊断参数标准对照，进行分析、判断和评价。16、性能良好的发动机综合性能分析仪，一般是由信号提取系统、 信息处理系统 和 采空显示系统 三大部分组成的。17、检测前轮侧滑量的主要目的是 确知前轮前束与前轮外倾是否配合得当 。18、汽车检测可分为 安全环保检测 和 综合性能检测。19、制动性能检测设备有 五轮仪 、 制动减速度仪 、 制动试验台 。20、发动机综合性能检测是包括_发动机动力性_、_燃油经济性_、气缸密封性、排放净化性等使用性能的全面检测。21、汽车燃油经济性是指以 最少燃油消耗 完成单位运输工作量的能力。22、汽车排放污染物主要来自尾气的排放和少部分来自 燃油蒸发 。23、评价汽车制动性能的指标有_制动效能_、_制动抗热衰退性能_和_制动时汽车的方向稳定性_。24、检测活塞到达压缩终了上止点时气缸压缩压力的大小可以表明气缸的密封性。检测方法有，用气缸压力表检测和用气缸压力测试仪检测。25、无负荷测功仪按其工作原理可分为测瞬时加速度和测加速时间。26、对于一个由一般仪器、仪表构成的检测系统，通常由传感器、变换及装置、记录与显示装置、数据处理装置等组成。27、简答题1、什么叫自动跑偏？汽车直线行驶在平坦的道路上的过程中，自行向一侧方向偏向，导致汽车出现前后轴中心的连线与行驶轨迹的中心线不一致的行驶现象。2、什么是稳态测功和动态测功？ 稳态测功是发动机或整车在节气门开度一定，转速一定和其他参数保持不变的稳态状态下，用机械测功器、电涡流测功器、水利测功器或在底盘测功试验台进行功率测定。通过给发动机施加一顶负荷，测出额定转速相应扭矩，然后计算出功率数。动态测功是在发动机节气门开度和转速均为变动的状态下测定其功率。3、什么是方向盘自由转动量和方向盘转向力？方向盘自由转动量是指汽车停在平坦、干燥和清洁的硬质地面上保持直线向前状态时，轻轻左右转动方向盘从一侧有阻力起至另一侧有阻力止所测得的最大游动角度。方向盘转向力是指在一定行驶条件下，作用在方向盘外缘的圆周力。4、汽车动力性检测参数与评价指标? 动力性采用驱动轮输出功率作为检测参数，采用发动机在额定扭矩（最大扭矩）和额定功率（最大功率）时的驱动轮输出功率作为评价指标。5、叙述发送机故障诊断系统自诊断的工作原理？汽车发动机电控系统工作时，自诊断系统把检测到的非正常输入输出信号为故障信号。自诊断系统故障主要有以下几种。1、当某一电路出现超出规定范围的信号时，故障诊断系统就判定该电路信号出现故障。2、发动机运转时，当ECU在一段时间里收不到某一传感器的输入信号或输入信号在一段时间内不发生变化，ECU亦判定为故障信号。3、发动机正常工作中，如果偶然出现一次不正常信号，ECU诊断系统不会判断为故障。只有当不正常信号持续一定时间或多次出现时，ECU才将其判定为故障。6、如何获得发动机单缸功率 先测出发动机整机功率，再测出某缸断火情况下的发动机功率，两功率之差即为断火之缸的功率。7、制定最佳诊断周期应考虑哪些因素汽车技术状况，汽车使用条件、汽车检测诊断、维护修理、停驶损耗的费用等因素8、前轮摆振的原因是什么？汽车行驶中，前轮发摆是一种常见故障，分低速摆振和高速摆振两种。低速摆振大多是由转向系统机件磨损松旷及调整间隙过大引起;高速摆振除包括低速摆振的原因之外，主要是车轮不平衡、前轮定位失准、前轮变形及钢板弹簧发生位移等原因造成的。9、计权网络和计权声级是什么？计权网络：能够模拟人耳的听觉特性，把电信号修正为与听感近似值的网络。计权声级：模拟人耳对不同dB强度噪声的频率特性。10、什么是自由加速工况？在发动机怠速下，迅速但不猛烈地踩下加速踏板，使喷油泵供给最大油量。在发动机达到调速器允许的最大转速前，保持此位置。一旦达到最大转速，立即松开加速踏板，使发动机恢复怠速。11、说出离合器打滑故障的原因？ 从动盘磨擦片磨损过度或铆钉外露； 离合器压盘弹簧过软或折断； 离合器踏板自由行程过小； 从动盘摩擦片上有油污或老化变硬； 离合器与飞轮接合螺栓松动； 离合器总泵回油孔堵塞。12、气缸漏气量检测的基本原理是什么？ 检测气缸漏气量时，发动机不运转，活塞处在压缩终了上止点位置，从火花塞孔处通入一定压力的压缩空气，通过测量气缸内压力的变化情况，来表征整个气缸组的密封性，不仅表征气缸活塞摩擦副，还表征进排气门、气缸衬垫、气缸盖及气缸的密封性。13、何谓车轮定位的静态检测法和动态检测法？车轮定位的静态检测法，是在汽车静止的状态下，根据车轮旋转平面与各车轮定位间存在的直接或间接的几何关系，用专用检测设备对车轮定位进行几何角度的测量。动态测量法，是在汽车以一定车速行驶的状态下，用检测设备检测车轮定位产生的侧向力或由此引起的车轮侧滑量14、冷起动喷油器与一般喷油器的主要区别是？仅用于冷起动，因而要求工作电压较低要求喷雾颗粒化，喷雾锥角较大外商投资企业需改变登记注册事项,应当及时办理变更登记。变更项目应在报经原审批机关批准后30天内向登记主管机关申请办理变更登记。improve, security prevention capacity obviously enhanced, security hidden and security accident obviously reduced, effective guarantees information health development. XX Education Centre regularly carry out day-to-day network security monitoring information and equipment. By the appropriate technical staff, XX network engine room maintenance staff on site management and maintenance on a regular basis, scheduled viewing of networks, systems, databases and associated equipment operating conditions, and make a record. Computer lab maintenance managers regularly run a variety of devices in the school information system parameters, server systems and various data backup, so that there was a hardware failure in a system crash can resume quickly and efficiently. Computer lab maintenance managers establish a network antivirus system, Avira Virus system on a regular basis, and anti-virus software security assessment, time to upgrade. Computer lab maintenance management for all equipment in the room a regular dust, replace the old label. Regularly host servers, network switches, core routing, firewalls, hardware maintenance, such as equipment failure, should be processed in a timely manner in order to ensure safe and reliable operation of the system. In XX city information and equipment was established within the Centre, educational metropolitan area network center machine room XX. Servers and data stores and applications to set up in XX City metropolitan area network center machine room. WindowsServer2003, windowsServer2008, windowsServer2012, Linux, the operating system, the database for SQL Server2008, Office software, such as Microsoft Office software. Schools (units) of computer, information system security products for domestic products, including the use of 360 and kingsoft Internet security software. XX education metropolitan area network used by the server for HP, firewall and information security product for Huawei and Cisco products. In their daily work, to publicize related knowledge and information security considerations. Enhanced global awareness of network and information security, and strive to achieve network everyone knows security and virus before the guard, to improve network and information security, ensure that the XX education system network and information system security. Tracking reporting system requires all parties to strengthen collaboration, work closely with emergency safety plan developed XX education metropolitan area network, regularly carry out emergency drills, and carried out special funds every year to protect the security of information. Annual 2-3 professional training for network managers in the city, forming technology with a strong professional and technical team, school network managers on common network failures and be capable of solving security issues. Issues that cannot be resolved, timely forms of meetings, such as meetings, analysis, and solutions through a meeting, without rolling up the ability to solve problems, and feedback to superiors in writing departments to resolve. Through self-examination, we are well aware, relative lack of investment in education, facilities and equipment for further updates, education development is still uneven, new education concepts need to be further enhanced to some extent and restricting the development of city education. We will take the opportunity of government supervision, to strive for the province education demonstration counties as a driving force, further increase input in education, efforts to promote thelong wing, and Li Wanfu, and Michael Jenkins, and Chen Jian, and Song and xiaochuanyun, 7 bit comrade participate in province backbone face-to-face or network learning, do each teaching points are has teachers participate in training, October 17, 2013, issued XX city education information and equipment Center on requirements the teaching points school for good satellite ground station installation prepared of notification, requirements school related management personnel familiar XX province teaching points digital education resources full cover project construction management manual, Particularly with regard to installation preparation parts according to the point of XX province full coverage of digital educational resources in the project construction management manual . Devices are able to receive TV signals and IP data, the schools have school training and school-based application to use good. Actively organize implementation of a division of a class, a teacher in one class activity. XX in XX city first to complete full registration of teachers working in this city, XX, Sun class rate of 54 per cent respectively, the forefront. In XX, a division of a class, a class a total ranked first in Division activities, was awarded the national ministerial one, 2 provincial second prize, third prize at the provincial level 3. Actively organize implementation of the