专业英语考试试卷(广东工业大学)
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广东工业大学808电路理论
广东工业大学808电路理论 东工业大学硕士研究生招生考试大纲——808电路理论广东工业大学 全日制研究生招生考试专业课考试大纲 电路理论 基本内容：（300字以内） 一、电路模型和电路定理 1.电路模型； 2.电流电压参考方向； 3.功率计算； 4.电路元件主要特性； 5.电路基本定律； 二、电阻电路的等效变换 1.电阻的串、并联和Y-△变换； 2.电源的串、并联； 3.输入电阻计算； 三、电阻电路的一般分析方法 1.电路的图和独立方程数； 2.支路电流法； 3.网孔电流法和回路电流法； 4.结点电压法； 四、电路定理 1.叠加定理； 2.替代定理； 3.戴维宁定理和诺顿定理； 五、含有运算放大器的电阻电路 1.运算放大器的电路模型； 2.含有理想运算放大器的电路分析； 六、储能元件 1.电容元件； 2.电感元件； 3.电容、电感元件的串、并联； 七、一阶电路和二阶电路的时域分析 1.动态电路方程； 2.一阶电路的初始值、稳态值和时间常数的计算； 3.一阶电路的零输入响应、零状态响应、全响应、阶跃响应和冲激响应； 4.二阶电路的零输入响应、零状态响应和阶跃响应；
八、正弦稳态电路的分析 1.阻抗（导纳）的串、并联和等效变换； 2.电路的相量图； 3.正弦稳态电路的功率和复功率； 4.正弦稳态电路的分析和串、并联谐振； 九、含有耦合电感的电路 1.互感概念和含有耦合电感电路的计算； 2.空心变压器和理想变压器； 十、三相电路 1.对称和不对称三相电路分析； 2.三相电路功率计算和测量； 十一、非正弦周期电流电路和信号频谱 1.非正弦周期电流分解； 2.有效值、平均值和平均功率； 3.非正弦周期电流电路的计算； 十二、线性动态电路的复频域分析 1.拉普拉斯变换定义、性质和反变换； 2.运算法分析线性电路； 3.网络函数定义、极点和零点； 4.极点、零点与冲激响应和频率响应； 十三、二端口网络 1.二端口网络的方程和参数； 2.二端口的等效电路和连接； 十四、非线性电路 1.非线性电阻、电容和电感； 2.非线性电路的方程； 3.小信号分析法和分段线性化方法。 题型要求及分数比例：（硕士生满分150分） 1.选择题，共30分； 2.简单计算题，共60分； 3.计算题，共60分。 参考书目 电路（第五版）原著邱关源、修订罗先觉，高等教育出版社.2006年
2017年考研英语考试真题
2017年考研英语二真题 Section I Use of English Directions： Read the following text. Choose the best word (s) for each numbered blank and mark A, B, C or D on the ANSWER SHEET. (10 points) People have speculated for centuries about a future without work.Today is no different，with academics，writers，and activists once again 1 that technology is replacing human workers. Some imagine that the coming work-free world will be defined by 2 .：A few wealthy people will own all the capital，and the masses will struggle in an impoverished wasteland.. A different and not mutually exclusive 3 holds that the future will be a wasteland of a different sort，one 4 by purposelessness：Without jobs to give their lives 5 ，people will simply become lazy and depressed. 6 ，t oday’s unem ployed don’t seem to be having a great time. One Gallup poll found that 20 percent of Americans who have been unemployed for at least a year report having depression，double the rate for 7 Americans. Also，some research suggests that the 8 for rising rates of mortality，mental-health problems，and addicting 9 poorly-educated，middle-aged people is a shortage of well-paid jobs. Perhaps this is why many 10 the agonizing dullness of a jobless future. But it doesn’t 11 follow from findings like these that a world without work would be filled with unease. Such visions are based on the 12 of being unemployed in a society built on the concept of employment. In the 13 of work，a society designed with other ends in mind could 14 strikingly different circumstances for the future of labor and leisure. Today，the 15 of work may be a bit overblown. “Many jobs are boring，degrading，unhealthy，and a waste of human potential，” says John Danaher，a lecturer at the National University of Ireland in Galway. These days，because leisure time is relatively 16 for most workers，people use their free time to counterbalance the intellectual and emotional 17 of their jobs. “When I come home from a hard day’s work，I often feel 18 ，” Danaher says，adding，“In a world in which I don’t have to work，I might feel rather different”—perhaps different enough to throw himself 19 a hobby or a passion project with the intensity usually reserved for 20 matters. 1. [A] boasting [B] denying [C] warning [D] ensuring 2. [A] inequality [B] instability [C] unreliability [D] uncertainty 3. [A] policy [B]guideline [C] resolution [D] prediction 4. [A] characterized [B]divided [C] balanced [D]measured 5. [A] wisdom [B] meaning [C] glory [D] freedom 6. [A] Instead [B] Indeed [C] Thus [D] Nevertheless 7. [A] rich [B] urban [C]working [D] educated 8. [A] explanation [B] requirement [C] compensation [D] substitute 9. [A] under [B] beyond [C] alongside [D] among 10. [A] leave behind [B] make up [C] worry about [D] set aside 11. [A] statistically [B] occasionally [C] necessarily [D] economically 12. [A] chances [B] downsides [C] benefits [D] principles 13. [A] absence [B] height [C] face [D] course 14. [A] disturb [B] restore [C] exclude [D] yield 15. [A] model [B] practice [C] virtue [D] hardship 16. [A] tricky [B] lengthy [C] mysterious [D] scarce 17. [A] demands [B] standards [C] qualities [D] threats 18. [A] ignored [B] tired [C] confused [D] starved 19. [A] off [B] against [C] behind [D] into 20. [A] technological [B] professional [C] educational [D] interpersonal
研究生英语期末考试作文,
long-distance education long-distance education, It is called network education in the file that released by department of education has introduced some , or called contemporary and long-range education network education. It refers to the use of TV and the Internet and other media teaching mode, the remote education is a very popular teaching model, because it broke through the time and space boundaries, accommodation in the school is different from the traditional teaching mode. Using this kind of teaching model of students, do not need to a specific location, anywhere. Students can also through television and radio, Internet, coaching line, a variety of different methods, such as mutual learning. Online learning has superior side, there are also some disadvantages. Learners can not adapt to the network teaching mode. Network education lack of interactivity and authenticity. On the BBS of the remote education, many netizens agree that network education's biggest drawback is the lack of interactivity and authenticity. In network education, between students and students, between students and the teacher only through BBS, E-mail or other network communication tools to communicate, people had built up a relationship is a kind of virtual environment of interpersonal relationships, interpersonal communication gradually from direct to indirect, from the diversification to the simplification, lost the traditional relationship between university students directly group consciousness gradually indifference. Education of students by this way, the collective idea and the spirit of solidarity and collaboration as generally traditional college students, is not conducive to the development of individuals and society.
广东工业大学电子工艺实习
实习报告 实习名称电子工艺实习 学院信息工程学院 年级班别 17级通信工程4班 学号 学生姓名 指导教师 2018年 12 月 19 日
一、实验目的及要求 1、实验目的： 电子工艺实习是一门考验我们动手能力的课程，它是学生在学习理论知识、对模拟电子有一定了解的基础上为进一步提高个人专业能力而准备：它促使学生掌握现代化的电子工艺技术，认识和了解电子器件和元件，设计电子产品，完成电子产品制作的全过程；握器件的识别检测以及读懂相对应的电路原理图并进行PCB设计制作，锻炼焊接工艺的基本技能能力。掌握电子电路安装、调试技术等技能并能认识常见故障同时也是为之后更深一步的学习与实验打下不可或缺的坚实基础。 2、实验要求： 此次的电子工艺的的任务为设计并制作一个基于LM317KC、LM337KC范围为1.25-12V的可调稳压源。通过实验，要求一是学生本人对电路的分析，要求我们懂的并掌握对其电路的元件、元件所组成的部分作用及其工作原理的分析；二是对电路的设计要符合实用、美观等定性要求!在满足上述两大定性要求下，还要求学生： 1）掌握专用工具、仪器仪表的正确使用； 2）掌握并使用相关仪器仪表对电路元件好坏的测定； 3）完成稳压源电路的实物线路布置，分析电路图并将其布线焊接出来； 4）能正确使用仪器仪表，完成产品的全部测试，并能排除故障； 5）学习Multisim电路仿真与设计软件的使用，设计电路图并进行仿真； 6）在稳压源电路的基础上，焊接PCB板收音机电路。 二、实习使用的仪器设备、工具及材料： 1、仪器设备：万用表、变压器 2、工具： 1）焊接工具：30W电烙铁、 2）辅助工具：吸锡器、松香、钳子、镊子、剥线钳 3、制作材料：1个LM317集成稳压器，1个LM337集成稳压器1个，B5K电位器，120Ω和1kΩ电阻各2个，1个2200uf/50V有极电容，各2个1000uf/50V、10uf/25V、100uf/25V型有极电容、100pf无极电容，8个1N4007二极管 三、实习产品 1、产品名称：±1.25~12V可调稳压电源； 2、工作原理：如下图所示
研究生英语考试试卷
General English Qualifying Test for Non-English Major Graduate Students 2008 (A 卷) ******************************考试注意事项*************************** 一．本考试由两部分组成：试卷一（Paper One）包括听力理解、词汇与结构、阅读理解三部分，共70题，按顺序统一编号；试卷二（Paper Two）包括改错、写作。 二．试卷一的答案请按要求在答题卡上填涂，否则无效。试卷二的改错、写作部分请直接在试卷二上答题. Paper One Part I Listening Comprehension (20 points) Section A Directions: In this section, you will hear 10 short conversations. At the end of each conversation, a question will be asked about what was said. Both the conversation and the question will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices marked A., B., C. and D., and decide which is the best answer. Then mark the corresponding letter on the Answer Sheet with a single line through the center. Example: You will hear: You will read: A. At the office. B. In the waiting room. C. At the airport. D. In a restaurant. From the conversation we know that the two were talking about some work they had to finish in the evening. This is most likely to have taken place at the office. Therefore, A. "At the office" is the best answer. You should choose [A] on the Answer Sheet and mark it with a single line through the center. 1. A. The weather has been warm lately. B. The furnace has broken down. C. The building’s heating system dries the air. D. The woman should put medicine on her lips. 2. A. A furnished house. B. A recent book. C. A refinished cellar. D. A new record. 3. A. They need to turn up ahead. B. She doesn’t know where State Street is. C. There was no left turn at the last intersection. D. The man missed the turn.
广东工业大学 操作系统 真题 附答案
学院： 专业： 学号： 姓名： 装 订 线 广东工业大学考试试卷 ( A ) 课程名称: 操 作 系 统 考试时间: 第 周星期 ( 年 月 日) 题 号 一 二 三 四 五 总分 评卷得分 评卷签名 复核得分 复核签名 一、 填空题：（每空1分，共20分） 1． 操作系统有多种类型:(1)允许多个用户以交互方式使用计算机的操作系统,称 为 ；(2)允许多个用户将若干个作业提交给计算机系统集中处理的操作系统称为 ；(3)使计算机系统能及时处理由过程控制反馈的数据并作出响应的操作系统称为 。 2． 进程是对正在运行程序的一次抽象。有时进程必须相互作用，这种相互作用会导致 竞争条件，为了避免竞争条件，OS 引进了 的概念，它是满足如下条件的一段代码: 在这段代码中某一时刻只有一个进程访问共享区域。 3． 产生死锁的原因是： ； 。 4． 固定式分区产生 零头，可变式分区产生 零头。 5． 四种I/O 控制方式是 、 、 、 和 。 6． 在设计I/O 软件时,一个关键的概念是 ,它的基本含义是应用程序 独立于具体使用的物理设备. 7． 文件的物理结构有三种： 、 、 。 8． 完成一个磁盘服务请求的总时间由 、 、 组成。 9． 在UNIX 系统中，可通过系统调用 来创建进程。
二、单项选择题：（每题1分，共10分）Array 1. 操作系统是对 ( ) 进行管理的软件。 A.软件 B.硬件 C.计算机资源 D.应用程序 1.分配到必要的资源但未获得处理机时的进程状态是 ( ) 。 A.就绪状态 B.执行状态 C.阻塞状态 D.撤销状态 2.( )是操作系统中最重要、最基本的概念之一，它是系统分配资源的基本单位， 是一个具有独立功能的程序段对某个数据集的一次执行活动。 A. 程序 B. 作业 C. 进程 D. 线程 3.下面 ( ) 算法不是进程调度算法。 A.LRU B.FCFS C.SJF D.HPF 4.关于存储器管理，以下说法错误的是（）。 A.虚拟存储器是由指令的寻址方式所决定的进程寻址空间，由内外存共同组成。 B.覆盖、交换、请求式调入和预调入都是操作系统控制内存和外存数据流动的方式。 C.内存信息保护方法有：上下界保护法、保护键法、软件法等。 D.内存分配算法中，最佳适应算法比首次适应算法具有更好的内存利用率。 5.位示图法可用于（）。 A.文件目录的查找 B.分页式存储管理中主存空闲块的分配和回收 C. 页式虚拟存储管理中的页面置换 D. 可变式存储管理中空闲区的分配和回收 6.现有三个作业同时到达，每个作业的计算时间均为2小时，它们在一台处理机上按单 道方式运行，则平均周转时间为（） A.2小时 B.3小时 C.4小时 D.6小时 7.进程控制块是描述进程状态和特性的数据结构，一个进程（）。 A.可以有多个进程控制块 B.可以和其他进程共用一个进程控制块 C.可以没有进程控制块 D.只能有惟一的进程控制块 8.在可变式分区分配方案中，某一作业完成后，系统收回其主存空间，并与相邻空闲区 合并，为此需修改空闲区表，造成空闲区数加1的情况是( ) A.无上邻空闲区，也无下邻空闲区 B.有上邻空闲区，但无下邻空闲区 C.有下邻空闲区，但无上邻空闲区 D.有上邻空闲区，也有下邻空闲区 9.用户程序通过系统调用creat来创建一新文件时，在执行creat()的过程中，用户进 程运行在下。 A.系统态 B.用户态 C.系统态或用户态 D.目态 三、判断题（每题 1 分，共 10 分） 1.实时系统在响应时间、可靠性及交互作用能力等方面一般都比分时系统要求高。（） 2.多个进程可以对应于同一个程序，且一个进程也可以执行多个程序。（） 3.系统处于不安全状态也可能不会产生死锁。( ) 4.虚拟存储器是一个假想的地址空间，因而这个地址的大小是没有限制的。（） 5.设备独立性是指系统具有使用不同设备的能力。（） 6.隐式链接结构可以提高文件存储空间的利用率，但不适合文件的随机存取。（） 7.为了提高磁盘对换空间的利用率，一般对其使用离散的分配方式。( ) 8.线程是调度的基本单位,但不是资源分配的基本单位。( ) 9.访问控制矩阵比访问控制表更节约空间。( ) 10.在UNIX文件系统中，文件的路径名和磁盘索引结点之间是一一对应的。( )
研究生英语期末考试 选择(缩印版)
一.同义词 16.Children may ridicule other children new to a neighborhood. A. make fun of 17.It is useless to attempt to flee from every danger, some risks must be taken. C. run away 18.Many pure metals have little use because they are too soft, rust too easily, or have some other drawbacks. B. disadvantages 19.Magazines are the fifth most important advertising medium, and magazine advertising requires a substantial investment from advertisers. D. considerable 20.Efforts to ameliorate housing conditions for the poor were halted because government funds were cut off. C. improve 21.Because of the close collaboration of architect and builder, the building was completed ahead of schedule. B. joint work 22.After World War , the Vietnamese believed that the French would allow them to be an autonomous people. A. self-governing 23.Physical well-being presupposes that one should vary his diet and often have some wholesome food. C. healthful 24.The layout of the book, with the text on the left and the notes on the right, makes it a pleasure to use. B. arrangement 25.A child leaving home before he is ready is analogous to bird trying to leave the nest before it can fly. D. similar 单选 26.He had always been oblivious to the way Ruth looked, and had never once paid her a compliment. 27.I like the professor's lecture because he amplified his lecture with some vivid slide shows. 28.On the seminar the historians still cannot agree on the date on which the particular war commenced . 29.Despite the news that her son had been dead years ago, she still clung to the hope that he would return some day. 30.During the night a person's temperature may drop one or two degrees, and it can be difficult to arouse him in the morning if his body hasn't become hot yet. 31.The farmers were more anxious for rain than the people in the city because they had more at stake. 32.Man often wonders how the earth evolved from a hot, violent birth to the celebrated watery planet that stands out in pictures from space. 33.When business is depressed , there is usually an obvious increase in unemployment. 34.Social structure organization is simply the way that people, groups, and institutions are organized with respect. to one another. 35.One of the reasons for his popularity in our village is that he asks after almost everyone every time when he comes back from the big city. 二.同义词 16.The winner was deprived of his gold medal because he was found to have taken stimulants before the race. C. was deprived of 17.The army launched a major assault against the rebel army and many citizens joined the army. A. attack 18.Because Charles had forgotten his key, he was locked out. B. unable to in 19.His behavior had been perturbing me more than had cared to admit. D. troubling 20.Lighting levels are carefully controlled to fall within an acceptable level for optimal reading convenience. A. ideal 21It is said that you can intimidate your enemies by speaking in a low voice and carrying a big stick. C. frighten 22 .If you know in advance that the examination is going to be easy, you have no incentive to study very much. D. motive 23.The soldier discovers martial stirrings in his breast as he puts on his uniform. B. excitement 24.Many pure metals have little use because they are too soft, rust too easily, or have some other drawbacks. C. disadvantages 25.You'll succeed in the final examination if you stick to your belief that you are not a failure. A. adhere to 单选 26Care should be taken to decrease the length of time that one is subjected to loud continuous noise. 27.The teacher set up those obstacles for no other purpose than to challenge the students to overcome them. 28.The police who was lack of experiences was completely, taken in by the thief's disguise. 29.My aunt wound a brightly-colored thread round her finger so as not to forget her appointment. 30.They could not go to the theater together because his free time never coincides with hers. 31.A (n) personnel manager has a variety of role relations with people occupying related statuses. 32.This is a difficult job that needs to be tackled whole-heartedly-not ply at. 33.The curtain had risen hardly when shot startled the audience. 34.He would go to endless trouble to help anyone he thought worthy of encouragement. 35.Some professors prefer to control discussion while others prefer to guide the class without dominating it. 三.同义词 16. If you know in advance that the examination is going to be easy, you have no incentive to study very much. B. motive 17.The mother soothed the disappointed child and then promised to take him on a picnic as soon as it stopped raining. D. comforted 18.It is not easy to remain tranquil when events suddenly change your life. C. calm 19.Sales are an accurate gauge of a book's popularity rather than a representation of it's real value. A. criterion 20.Because Charles had forgotten his key, he was locked out. D. unable to in 21.The army launched a major assault against the rebel army and many citizens joined the army. B. attack 22.The winner was deprived of his gold medal because he was found to have taken stimulants before the race. A. was deprived of 23.At the international conference on the nuclear weapons several dissenting statements were made. D. opposing 24.The dominant theme is of tranquility and peacefulness. C. major 25.A conservative person opposes change and too many new ideas. A. unprogressive 单选 26.It is very likely that the Martian will also be adapted to underground existence, for conditions are much more equable underground. 27.The medicine scientists discovered that the prime reason for her lung cancer is excessive smoking. 28.The interviewer interpreted the applicant's late arrival as a sign of disorganization, undependability or lack of interest in the job. 29.After about an early age of 13, perceptions have already been formed and ambitions cast. 30.South Africa's black majority got its first real say in governing early last December. 31.Technology has facilitated the sharing of information and the storage and 32.delivery of information, thus making more information available to more people. 32.Jack is the very person who can be entrusted with either money or secret information. 33.He stopped the car so abruptly that he was hit by the car behind him. 34.The black people launched civil movement, struggling for abolition of slavery. 35.After a long journey, the tourists who experienced danger and hardship reached their destination at length.
广工2012操作系统复习
简答题 1.请画出进程的三种基本状态及其状态转换图。 2.简述死锁的四个必要条件。 A互斥条件。B请求和保持条件。C不剥夺条件。D环路等待条件。 3.防止死锁有哪些策略？ A掘弃“请求和保持”条件。B掘弃“不剥夺”条件。C掘弃“环路等待”条件。 4.简述动态重定位。 在动态运行时装入的方式中，作业装入内存后的所有地址都仍然是相对地址，将相对地址转换为物理地址的工作，被推迟到程序指令要真正执行时执行。 5.简述Spooling操作。 为了缓和CPU的高速性与I/O设备低速性间的矛盾而引入了脱机输入、脱机输出技术。该技术是利用专门的外围控制机，将低速I/O设备上的数据传送到告诉磁盘上；或者相反。这样，便可在主机的直接控制下，实现脱机输入、输出功能。此时的外围操作与CPU对数据的处理同时进行，我们把这种联机情况下实现的同时外围操作称为SPOOLing（Simultaneous Peripheral Operation On-Line），或称为假脱机操作。 6.请解释设备独立性原则。 应用程序独立于具有使用的物理设备。未了实现设备独立性而引入了逻辑设备和物理设备这两个概念。在应用程序中，使用逻辑设备名称来请求使用某类设备；而系统在实际执行时，还必须使用物理设备名称。 7.请回答文件的物理结构有哪几种类型。 A连续结构。B链接结构。C索引结构
综合应用题 1．考虑一个有760个字节程序的如下存储器引用： 12，90，351，190，180，475，30，550，635，650，227，430，640，710，745，10，15，650，740，249。 假定主存中每块为100个字节，有三块供该程序使用，采用页式虚拟存储管理方式，程序开始执行时已将程序的前3页依次装入主存，对于以上的存储器引用序列，给出其页面走向，并分别使用FIFO算法和LRU算法计算缺页中断次数。 因为主存中每块可以存放100个字节，因此逻辑上每页也为100字节，对于给定的存储器引用地址除以100后取整，即是该地址所在的页面号因此页面走向为：0,0,3,1,1,4,0,5,6,6,2,4,6,7,7,0,0,6,7,2 2．假定在某移动臂磁盘上，刚刚处理了访问75号磁道的请求，目前正在80号磁道上读信息，并有下列请求序列等待访问磁盘： 请求序列 1 2 3 4 5 6 7 8 欲访问磁道160 40 190 188 90 58 32 102 请用SCAN算法（电梯调度算法）列出实际处理上述请求的次序。 FCFS：160.，40,190,188,90,58,32,102 电梯调度算法：90,102,160,188,190,58,40,32 循环扫描算法：90,102,160,188,190,32,40,58 最短寻找时间优先算法：90,102,58,40,32,160,188,190 3．三个进程R，M，P共享两个缓冲器B1和B2，B1和B2都只可存放一个记录。进程R每次把读入的一个记录存入B1；进程M把B1中的记录取出并加工，然后把加工好的记录存入B2；进程P把存放在B2中的加工过的记录取出并打印。请用PV操作描述并解决该问题。 S1：=1 S2：=0 S3：=1 S4：=0 4.为了实现文件的共享，办法之一是把文件目录分成用户文件目录和索引结点。现设目录文件存放在磁盘上，盘 块长度为1024 字节，每个文件说明占48 个字节，其中，文件名占 6 字节，指向相应索引结点的指针占 2 字节。设一个目录文件原来共有256 个目录表目，请求出未分解和分解后的找到一个文件所需平均访盘次数？ （1）未分解：(48*256)/1024=12(盘块) (1+2+3+...+12)/12=(1+12)/2=6.5(次) （2）分解后：(8*256)/1024=2(盘块) (1+2)/2 + 1 =2.5(次)