switch
Switches (Switch) is an identification based on the MAC ( network card hardware address) , complete the package forwarding packets functional network equipment
A router is a device that forwards data packets between computer networks, creating an overlay internetwork. 路由器（Router）是连接因特网中各局域网、广域网的设备，它会根据信道的情况自动选择和设定路由，以最佳路径，按前后顺序发送信号的设备
路由器是为信息流或数据分组选择路由的设备。Router is a routing device to select the flow of information or data packet
Router (Router) is connected to the Internet , LAN, WAN equipment ,
it will automatically select the channel and routing settings , the best path , according to the equipment before and after the order to send signals
区别
Switch refers to any network -level data relay equipment (although multi-finger bridge ) , while the router is more focused on the network layer
The first switch is a data link layer in the OSI / RM open architecture , which is the second layer , while the router is a beginning design work at the network layer of the OSI model
The switch is a physical address or MAC address to determine the destination address of the forwarding data . While the router is to use the IP address)to determine the data forwarding address交换机是一个物理地址或MAC地址来确定转发数据的目的地址。而路由器是使用的身份证号码不同的网络（即IP地址）来确定数据转发的地址
Traditional switch can only be split collision domain and broadcast domain can not be split ; router can split a broadcast domain
传统的交换机只能分割冲突域和广播域，不能分割;路由器可以分割广播域
路由器支持NAT Router supports NAT而交换机不支持
Windows os
The Windows operating system ( English: Windows ) operating system under Microsoft DOS in 1985 . Microsoft Windows is a color graphical interface operating system . Support Companions function . The default platform is composed of the taskbar and desktop icons Running Windows program operations are controlled by the mouse and keyboard . The left mouse button click Default is selected command, the left mouse button double-click the run command
Windows操作系统是一款由美国微软公司开发的窗口化操作系统。采用了GUI图形化操作模式，比起从前的指令操作系统如DOS更为人性化。Windows操作系统是目前世界上使用最广泛的操作系统
The Windows operating system is a development by the U.S. Microsoft，It uses a GUI graphical mode of operation，Compared to the previous instruction operating system such as DOS more humane. The Windows operating system is the world's most widely used operating system
Unix
UNIX, is a powerful multi-user, multitasking operating system that supports a variety of processor architectures , in accordance with the classification of the operating system , and a timesharing operating system .
Support multi-tasking , multi-user system
Open source code
Simple Mail Transfer Protocol
Simple Mail Transfer Protocol (SMTP) is an Internet standard for electronic mail (e-mail) transmission across Internet Protocol networks.，is a reliable and valid e-mail transmission protocol . It's based on the text of the Protocol. Specifies one or more recipients of a message，and then the message text is transferred。mainly used to transfer e-mail messages between systems and the delivery of notifications relating to the letter.
WAN
Used to achieve the interconnection of different parts of the LAN or MAN , remote computer, network computer communication between the different regions, cities and countries . 3,
WAN is a hybrid network that contains a variety of network
LAN is a single network
WAN IP address can not be repeated
LAN IP address is assigned within the LAN , the LAN IP address can be reused , do not influence each other
The WAN contained greater range than the LAN
Third-generation programming language
A third-generation programming language (3GL) is a refinement of a second-generation programming language.
The third generation brought refinements to make the languages more
programmer-friendly
This includes features like improved support for aggregate data types, and expressing concepts in a way that favours the programmer, not the computer
第三代语言(3GL)是设计更容易被人们所理解的高级程序语言，包括像命名变量的事物。Fortran, ALGOL 和COBOL 是这种语言的早期例子。大部分“现代”语言(BASIC, C, C++)是第三代语言。大部分GLs 支持结构化语言设计。
The third-generation language (3GL) programming language design is more easily understood , including things like named variables . Fortran , the ALGOL and COBOL are early examples of this language . The most " modern" languages ( BASIC, C and C + +) is the third generation language . Most of the GLs to support the design of structured language .
High-level programming language ( third-generation language)include:
Traditional high-level programming language,such as FORTRAN、COBOL、ALGOL、BASIC Common structured programming languages,such as PL/1，PASCAL，C和Ada。
Special language APL、Lisp、PROLOG、Smalltalk、C++、FORT
3.
4GL or fourth-generation language is more close to natural language than 3GL language To access the database language is often referred to as the 4GL
The liquid crystal display ( English: Liquid Crystal Display , often referred to as LCD ) flat thin display device by a number of color or black and white pixels , placed on the front side of the light source or reflector
OSI/ISO
OSI模型，即开放式通信系统互联参考模型（Open System Interconnection Reference Model），是国际标准化组织（ISO）提出的一个试图使各种计算机在世界范围内互连为网络的标准框架，简称OSI。
Proposed by the International Organization for Standardization (ISO), an attempt to make a variety of computer networks worldwide interconnection standard framework , referred to as the OSI .
计算机专业英语第4次作业 1.Windows gives you more control over the__A___ your work. A：operation B：way C：energy D：power 2.Tea or coffee ? Which is your___A___? A：preference B：confusion C：puzzle D：mixture 3.Programs that can destroy another computer's programs are called__D_. A：games B：computer languages C：bugs D：viruses 4.You were _C___ to us by our associates. A：told B：suggest C：recommended D：informed 5.You should be able to tell the meaning of this word from its ___C____. A：company B：conclusion C：context D：communication 6.___B___ refers to the parts of the computer that you can see and touch. A：Software
B：Hardware C：Hardship D：Instruction 7.___C______that, I could do it much better. A：If I do B：If I were do C：Were I to do D：Were I do 8.A network is a group of computers linked by communication lines . 正确 9.Most RAM is temporary, losing its contents when the computer's power is turned off. 正确 10.A program is a series of instruction that guides a computer through a process. 正确 11.写出下列术语的英文或中文意思。 1 message encryption 参考答案： 1 信息加密（术） 2 客户机-服务器结构 2 client-server architecture 3 关系数据库 3 relational database 4 microwave radio 4 微波无线电 5 digital television 5 数字电视 12：[论述题]12.阅读下列短文，从A、B、C、D四个选项中，选出最佳选项。 For every man in the Civil War who died in battle, two or three men died of disease. Doctors of that time knew very little about causes of sickness or ways of preventing it. Thousands of men in poor health became soldiers. Hundreds of others had never had childhood diseases. Many of these soldiers could not withstand the epidemics of measles, mumps, and whooping cough that went through the camps. Army life was hard. Soldiers got few fruits or vegetables. There was no milk unless they happened to find a cow. Neither their clothes nor their shelters protected the troops from rain, snow, and cold. Sickness and disease were spread by insects, rats, and impure drinking water. Often the men drank straight from muddy streams. Gunshot wounds were serious, as in any war,
2014年上半学期计算机专业英语 期末考试试卷（A卷）答案 一、选择题 Ⅰ. Vocabulary(词汇)(30分) (一)．Translate the following words and expressions into Chinese(写出下列词组的汉语。)( 共10分，每题1分) 1. 操作系统 2. 需求分析 3. 网络安全 4. 数据结构 5. 决策支持系统 6. 关系数据库 7. 软件危机 8. 计算机病毒 9. 邮件附件 10．中央处理器（单元） (二)．Fill in the blanks with the corresponding English abbreviatio ns.(根据汉语写出相应的英语缩写。) (共10分，每题1分) 1．DBMS 2．TCP 3．MDI 4．OOP
5．ROM 6．VCD 7．CAD 8．SQL 9．USB 10．B2B （三） Match the following words and expressions in the left column with those similar in meaning in the right column.(将左列的词汇与右列相应的汉语匹配。)(10分，每空1分) 1． c 6. h 2． f 7．j 3． e 8. d 4．g 9. i 5． a 1 0. b Ⅱ. Comprehension(阅读理解) （一）
Fill in the blanks with suitable words or expressions from the lis t given below, and change the form where necessary. （从下面方框中选择合适的词或表达，以其适当的形式填空。）(10分, 每空2分) maintain disciplined requirements coding modified （二） Tell whether the following statements are true(T) or false(F) accord ing to the passage A.（根据上文的内容判断下列句子的正误）（10分,每题2分）1．F 2．T 3．F 4．T 5．F (三)、choose the best answer according to the passage B.(根据上文的内容选择正确的答案。（10分，每题2分） 1．B 2．A 3．D 4．B 5．C (四) Choose the best answer according to Passage C.（根据上文的内容选择正确的答案。10分，每题2分） 1．C 2. D 3. A 4. C 5. B Ⅲ.Translation.翻译(30分) (一) Translate the following sentences into Chinese.（将下列句子翻译成汉语。）（共20分，每题5分）
计算机专业英语题库1-0-8
[单选,共用题干题]Atransportlayerprotocolhasseveralresponsibilities,Oneistocreateaprocess-to-processprogram-to- programcommunication;TCPusesport1toaccomplishthis.Anotherresponsibilityofatransportlayerprotocolistocreatea2anderror- controlmechanismatthetransportlevel.TCPusesasliding3protocoltoachieveflowcontrol.Itusestheacknowledgmentpacket,time- out,andretransmissiontoachieve4control.Thetransportlayerisalsoresponsibleforprovidingaconnectionmechanismfortheapplicationprogram.Theapplicationprogramsends5ofdatatothetransportlayer.空白（1）处应选择（） A.A.numbers B.connection C.diagrams D.resources 传输层协议有多个职责。一是创建进程到进程（程序到程序）的通信，由TCP使用端口号来完成；另一个职责是在传输层创建流和差错控制机制。TCP利用滑动窗口 协议来实现流控制。它使用确认分组、超时、重传机制来完成差错控制。传输层也负责为应用程序提供连接机制，应用程序将数据流发送到传输层，发送端的传输 层负责建立于接收端之间的连接。
计算机专业英语作业答案（供参考） 计算机专业英语作业1 第1－3章作业一．( 词汇) (一)．(写出下列词组的汉语。) 1．（）中央处理器 2 标题栏 3．操作系统4．个人计算机 5．菜单栏6．桌面排版 7．电子表格8．硬盘 9．数据库10．光标 (二)．.(根据汉语写出相应的英语缩写。) 1．随机存储器2．只读存储器 3．传输控制协议P 4．数字视频光盘5．通用串行总线6．计算机辅助设计7．计算机辅助制造8．中央处理器 (三)．.(根据汉语写出相应的英语。) 1．键盘2．鼠标3．扫描仪 4．打印机5．输入6．输出 7．显示器8．存储器9．数据库 10．操作系统11．应用软件 12．字处理器13．网络浏览器 二．(T) (F).(判断正误。) 1．, . (√)
2．'s . (√) 3．: . (√) 4． a 2000 . (×) 5．( ) a . (√) 6. , a . (√) 7. , ’s . (×) 8. ’t . (×) 9. . (×) 10. . (×). 三．.(将左列的词汇与右列相应的汉语匹配。) （一）． 1. （） a. 操作系统 2. b. 输入. 3. ( ) c. 只读存储器 4. ( ) d. 应用软件 5. e. 中央处理器 6. f. 系统软件 7. g. 硬件 8. h. 随机存储器 9. i. 内存 10. j. 输出 1．e 6. j 2．g 7．a 3．h 8. d 4．c 9. f 5．b 10. i (二) ． 1. a
2. b a 3. c 4 d a 0 1 5. e a 6. f 7. g 8. h a 9. i a 1．d 6. a 2．g 7．f 3．h 8. c 4．b 9. e 5．i 四．, . （从下面方框中选择合适的词或表达，以其适当的形式填空。） 1． () . , a . , . , , . , . 2. , , . , a a a , a , a , a . , , . a , , a . , 1-2-3 . a , a ( ) . 3.
少工学结合创新教程....................... 计算机专业英语 2014年上半学期计算机专业英语 期末考试试卷（A卷）答案 一、选择题 I . Vocabulary（词汇）（30 分） （一）.Tran slate the follow ing words and expressi ons into Chin ese（ 汉语。）（共10分，每题1分） 1. 操作系统 2. 需求分析 3. 网络安全 4. 数据结构 5. 决策支持系统 6. 关系数据库 7. 软件危机 8. 计算机病毒 9. 邮件附件 10. 中央处理器（单元） （二）.Fill in the blanks with the corresponding English abbreviations.（ 写出相应的英语缩写。）（共10分，每题1分） 1 . DBMS 2. TCP 3. MDI 4. OOP 5. ROM 6. VCD 7 . CAD 8 . SQL 9 . USB 10. B2B （三） Match the following words and expressions in the left column with those similar in mea ning in the right colum n.（将左列的词汇与右列相应的汉语匹配。写出下列词组的 根据汉语）（10分，每空
1分） 1. c 6. h
1. 开发一个软件产品，开发过程分为五个步骤：需求分析和说明，设计，写代码，测试和维护。 2. 功能测试检验的是用有效的输入是否能够得到所期望的输出。+ 3. EDI指的是两个公司之间通过私有网络使用特定、结构化的格式电子交换商业信息。 4. 一些应用软件，例如Word,允许几个窗口同时在一个叫做MDI的模式下存在，你能够在 一个软件中打开多个文档。 （二）Tran slate the follow ing paragraph into Chi nese. （将下段文章翻译成汉语。）（共10分） 高级语言是一种人造语言，使用它我们可以写不同的指令。这成为可能不是因为计算机处理器如今是如此的技术先进以至于它们可以理解这些语言。你需要将这些语言翻译成计算机处理器能够理解的机器语言。编译器能够完成这项工作。这就意味着高级语言程序不是直接可项目1 3. e 8. d 4. g 9. i 5. a 10. b n . Comprehension（阅读理解） （一） Fill in the bla nks with suitable words or expressi ons from the list give n below ,and change the form where necessary. （从下面方框中选择合适的词或表达，以其适 当的形式填空。）（10分，每空2分） maintain discipli ned requireme nts codi ng modified （二）项目2 项目3 Tell whether the follow ing stateme nts are true（T） or false（F） accord ing to the passage A.（根据上文的内容判断下列句子的正误）（10分，每题2分）项目4 1 . F 2 . T 3 . F 4 . T 5 . F （三）、choose the best answer according to the passage B.（确的答案。（10分，每题2分） 1 . B 2 . A 3 . D 4 . B 5 . C （四）Choose the best answer according to Passage C. 案。10分，每题2分） 1 . C 根据上文的内容选择正 （根据上文的内容选择正确的答 项目5 2. D 3. A 项目6 4. C 5. B 川.Translation. 翻译（30 分） （一）Tran slate the followi ng senten ces in to Chin ese. 20分，每题5分）（将下列句子翻译成汉 语。 ） （共 项目7 项目8 项目9 项目10
1.判断题 （）1. Operating system first appeared during the third computer generation. （）2. Unlike the other buses, the address bus always receives data from the CPU; the CPU never reads the address bus. （）3. The main operations of set algebra are complementation, union and intersection. （）4. If an empty stack is popped, we say the stack overflows, which is normally an error. （）5. The CPU can be shared in a sequential manner only. （）6. Freeware is free software with no restriction. （）7. When writing data to memory, the CPU first outputs the data onto the data bus, then outputs the address onto the address bus. （）8．The FORTRAN programming language was developed during the first computer generation. （）9．A stack is a dynamic set that obeys the FIFO property. （）10．Two popular strategies for resource allocation are static allocation and dynamic allocation. （）11．The CPU can be shared in a sequential manner only. （）12. A program written in the assembly language of one microprocessor can run on a computer that has a different microprocessor. （）13. Object-oriented programming(OOP) is a programming language model organized around “objects” rather than “actions” and data rather than logic. （）14. FORTRAN is a particularly good language for processing numerical data, but it does not lend itself very well to organizing large programs. （）15. C++ and Smalltalk are two of the more popular object-oriented programming language. 2.词汇 Vacuum tube 真空管general purpose 通用transistor 晶体管 ：大规模集成电路）Large Scale Integrated Circuit（LSI． VLSI(Very Large Scale Integrated Circuit）：超大规模集成电路 Mainframe 大型机medium-sized computer 中型机minicomputer 小型机 Microcomputer 小型机 machine language 机器语言assembly language 汇编语言high-level language 高级语言Multiprogramming 多道程序设计virtual memory 虚拟存储time-share 分时 Batch system 批处理系统interactive system 交互式系统 Instruction cycle 指令周期 Address bus, data bus, control bus Internal register内部寄存器external register 外部寄存器flag register标志寄存器 Instruction register 指令寄存器program counter程序计数器combinatorial logic组合逻辑Control signal 控制信号instruction code指令代码instruction pipeline指令流水线Bidirectional 双向的unidirectional 单向的 ALU(Arithmetic Logic Unit) 算术逻辑单元
计算机专业英语作业(1 一、Translate the following sentences into English or Chinese. 1.计算机 2.多媒体 3.硬件 4.软件 5.输入设备 6.存储器 7.外部设备8.处理器 9.鼠标10.语音识别 11.扫描仪12.寄存器 13.Arithmetic and logic unit 14.Binary form 15.Control unit 16.Instruction cycle 17.Execution cycle 18.Central processing unit 19.Universal serial bus 20.Universal parallel bus 二、For each of the following blanks, four choices are given. Choose the most appropriate one. 1.A personal computer keyboard includes . a.a typewriter layout and a set of arrow keys
b.a numeric keypad C.a Set of function keys d.a11 of above 2.A display is a device that is used to display . a.numbers letters b.special characters c. graphic information d.all of above 3.system software includes and . a.operating system and application software b.operating system and programming language c.special—purpose programs and application software d.OS and special—purpose programs https://www.doczj.com/doc/7a8644777.html,rmation flows from a computer into a peripheral device as . a.output b.memory c.a program d.input 5.programs are known collectively as .
计算机英语期末考试试题 I. 单选题. (1*20) 1.A computer system includes both _________ and software. A.cable B.memories C.CPU D.hardware 2.The heart of the computer is _________ A.CPU B.BUS C.CAI D.DIV 3.Which is not input device used with microcomputers ? A.Keyboard B.Printer C.touch screen D.Mouse 4.Basically , a computer consists of four components : Central Processing Unit , _________, Input Device and Output Device. A.Memory B.Keyboard C.Monitor D.The Control Unit 5.A _________ is a small , hand-held object that is pushed around a desktop to move the cursor or pointer on the screen or to select choices from menu displayed on screen. A.keyboard B.mouse C.monitor D.printer 6.Which is "删除" in Chinese ? A.shift B.Control C.Insert D.Delete 7.__________ refers to the parts of the computer that you can see and touch. A. Software B. Hardware C. Hardship D. Instruction 8._________ is used to communicate with another computer over telephone lines A. keyboard B .modem C. printer D. Mouse 9.__________is a device that enables the computer to handle sounds. A. network card B. video card C. sound card D. Monitor 10. The display screen is the most common device used to show you what the computer is doing. A. input B. printing C. output D. electronic 11._________ is a word processing tool that helps you to create quality documents. A. Word 2003 B. Outlook 2003 C. Access 2003 D. Excel 2003 12.The first generation of computer lasted from _________ to 1958. A.1965 B.1946 C.1947 D.1970 13._________ is the application of the computer and communications technology to improve the productivity of office workers. A.CAI B.AI C.OA D.CAM 14._________ is a software system based on graphics, which can run under MS-DOS. A.Office B.Mouse C.OS D.Microsoft Windows 15.Generally software can be divided into two types: software system and _________ system. A.hardware B.DOS C.application D.Windows 16.The _________ is the part of the computer where programs and data are stored. A.Input Device B.Memory C.CPU D.CU 17. refers to data storage equipment that allows the stored data to be accessed randomly rather than just in sequence. A.Random Access Memory B.Magnetic tapes C.Disks D.ROM 18.Word processing , of course, relies on perhaps the most basic computer _________ : the keyboard. A.output device B.input device C.storage D.CPU 19._________ refers to any machine capable of representing information from a
计算机专业英语考试试题及答案 一、判断1.(√)The cpu and memory are located on a special circuit beard in the system unit called the montherbocrd2.(√)the main difference between a supercomputer and a mainframe is that supercomputers are designed to execute a few programs as quickly as possible，whereas mainframes are designedto handle many programs running at the same(but at a slower pace)3.(×)Being computer fluent means that you should be able to build a computer yourself.4.(√)Embedded computers are selfcontained computer devices that have therv own programming and do not receive input5.(√)Currently，the performance of tasks by robot is based on preprinted algorithms1.(×)A web browser is a special device that is installed in your computer that allows it to communicate with devices on a network2.(√)data can be a number a word a picture，or a sound3.(√)strictly defined，a computer is a data processing device4.(√)one of the benefits of becoming computer fluent is being a savvy computer user and consumer and knowing how to avoid viruses the programs that pose treats to computer security 。 5(√)trend-spotting programs，developed for business，have been used to predict criminal activity二.写出中文 1.virtual function虚拟函数2.pointer 指针3.cursor 光标4.package 包裹 5. Boot 引导，自举6 TCP/IP 传输攻之协议/互联网协议7 DNS 域名服务8.HTTP 超文本传
计算机专业英语作业： 1、请将视频“什么是电脑硬件”中所述内容用英文表示。 For most people, computers are becoming a part of real life, the film will help you konw how it works. Their interior looks very complicated, but if the decomposition of parts, you will see a simple side of computers , This is《computer hardware in Plaining English 》,you see them, they are coming all shapes and sizes,but its work in some ways. In fact, if you can see their internals of computers, You will find that they all have the basic parts,the haddwares,do large part of the works in the computers.to explan,let’s look at some things you know ,like a house.what a great thing in the house is you have full space to put all the iterms.in fact ,many houses have basements.The basement is a good place to store debris.Basement, the more you can store.The same principle applies to computers.We need not boxes and bicycles, but photos, music, documents and https://www.doczj.com/doc/7a8644777.html,plete this task in the computer hard drive rather than in the basement, a computer hard drive, holds all your files will be used later, like basements, like the larger hard drive, the more things you can store. Basement is not perfect, going to the basement to take the things you need to spend much time, maybe put a cupboard on the ground floor can help you solve this problem, you can quickly get the items you want, although the cabinet can not put too many items, at least you do not always go to the basement, in the computer too, The computer can not quickly access to the data stored in the hard disk, because the computer go a long way to gain access to the hard disk data. In the computer memory (RAM) is like a cupboard, RAM's full name is called [random access memory], which allows the computer to access data more quickly and, of course, it also means that the operation of RAM to make your computer faster , but this cupboard (RAM) has a drawback, the memory will be cleared of stored data When every time you restart, of course, to make the house a variety of household appliances can operate at the appropriate time, you must have an Explorer to help you manage these appliances, if the weather is too hot , you maybe need to open the air conditioner to adjust the temperature, when it is dark, you need to turn on the lights. Computers, too, must have a bit Explorer to ensure that all other parts are functioning properly, the Explorer is the processor (CPU), small size of the processor, like a computer exclusive (in charge), it will send and receive information and to assist the software to complete the work. The faster the processor, the faster execution speed of the computer would be, so, let us revisit. Hard drive, like a basement, it can store the information you need. Memory, like a cupboard, which can increase data access speed. Processor, like the Field Explorer, always able to complete the work that we deliver, but also to ensure the normal operation of the various parts. Next time, when you use the computer, think about plain English in the host computer's computer hardware what happened, the various parts of computer hardware complement each other, to help you do all the things I Common Craft's Lee LeFever, "Computer hardware of Plaining English "The film recorded by me, if you need a higher quality video, or need to use the authorization of the film, please contact me https://www.doczj.com/doc/7a8644777.html, website. 2、请将以下英文翻译为中文。
一、Give out the full names for the following abbreviations(写出下列缩写词的全称)（15%） WAN__________________________________________________ HTTP__________________________________________________ NT____________________________________________________ CEO__________________________________________________ DBMS________________________________________________ ISP___________________________________________________ XML__________________________________________________ BIOS_________________________________________________ IT____________________________________________________ WWW_______________________________________________ 二、Match the following words and expressions in the left column with those similar in meaning in the right )（10%） 1. output devices a. 操作系统 2. silicon b. 扩展存储器 3. expanded memory c. 硅 4. database administrator d. 输出设备 5. operating system e. 汇编语言 6. assembly language f. 数据库管理员 7. gateway g. 数字图像处理 8. laser technology h. 网关 9. digital image processing i. 制造过程 10.manufacturing process j. 激光技术 1. （ ） 6. （ ） 2. （ ） 7. （ ） 3. （ ） 8. （ ）
计算机专业英语作业（2） 一、Translate the following sentences into English or Chinese. 1．热插拔2．操作系统 3．芯片组4．输入输出端口 5．挂接设备6．键盘 7．触摸屏8．屏幕指针 9．光笔10．游戏杆 11．轨迹球12．显示屏 13．图标14．图形符号 15．高速缓冲存储器16．外部总线 17．远程访问18．调制解调器 19．宽带20．激光打印机 21．Crosshair cursor 22．Dragging and dropping 23．Portable computer 24．Machine address 25．Non-impact method 26．Monochrome output 27．Grayscale output 28．Ink-jet printer 29．Solid-ink printer 30．High-intensity laser beam 31．Replaceable color cartridge 32．Thermal-transfer printer 33．Thermal-wax-transfer printer 34．Dye-sublimation printer 二、For each of the following blanks, four choices are given. Choose the most appropriate one. 1．The basic input device on a sma11 computer is a ． a．display screen b．keyboard