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提问人：网友anonymity 发布时间：2022-01-07

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从供选择的答案中选出应填入下面一段英文中______内的正确答案。 Video RAM means in general all forms of

从供选择的答案中选出应填入下面一段英文中______内的正确答案。

Video RAM means in general all forms of RAM used to(1). image data for the video display monitor. Somewhat confusingly, the most common(2)of video RAM is called Video RAM (VRAM). All types of video RAM are special(3)of dynamic RAM (DRAM). Video RAM is really a buffer(4)the processor and the display monitor and is often called the frame buffer. When(5)are to be sent to the display, they are first read by the processor as data from some form of main storage RAM and then(6)to video RAM. From video RAM (the frame buffer), the data is converted by a RAM digital-to-analog converter (RAMDAC) into analog(7)that are sent to the display presentation mechanism such as a cathode ray tube (CRT). Usually, video RAM comes in a 1 or 2 megabyte package and is(8)on the video or graphics card in the computer. Most forms of video RAM are dual-ported. While the processor is writing a new image to video RAM, the display is reading from video to(9)its current display content. The dual-port design is the main(10)between main storage RAM and video RAM.

供选择的答案：

1．difference 2．located 3．images 4．store 5．between

6．type 7．written 8．refresh 9．arrangements 10．signals

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更多“从供选择的答案中选出应填入下面一段英文中______内的正确答案。 Video RAM means in general all forms of”相关的问题

第1题

从供选择的答案中选出应填入下面一段英文中______内的正确答案。

A brouter is a network bridge and a router combined in a single product. A bridge is a device that connects one local area network (LAN) to(1)local area network that uses the same protocol (for example,(2)or Token Ring). If a data unit on one LAN is intended for a(3)on an interconnected LAN, the bridge forwards the data unit to that LAN; otherwise, it passes it along on the same(4). A bridge usually offers only one path to a given interconnected LAN. A router connects a network to one or more other(5)that are usually part of a wide area network (WAN) and may(6)a number of paths out to destinations on those networks. A router therefore needs to have(7)information than a bridge about the interconnected networks. It(8)a routing table for this information. Since a given outgoing data unit or packet from a computer may be intended for an(9)on the local network, on an interconneted LAN, or the wide area network, it makes sense to have a single unit that(10)all data units and forwards them appropriately.

供选择的答案：

1．more 2．LAN 3．Ethernet 4．address 5． offer

6．destination 7．consults 8．another 9．networks 10．examines

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第2题

从供选择的答案中选出应填入下面一段英文中______内的正确答案。

Each page element (division or section, heading, paragraph, image, list, and so forth) is(1)viewed as an "object." (Microsoft calls this the "Dynamic HTML Object Model." Netscape calls it the "HTML Object Model." W3C calls it the "Document Object Model.") For example, each(2)heading on a page can be named, given attributes of text style and color, and addressed by(3)name in a small program or "script" included on the page. This heading or any other element on the page can be changed as the result of a(4)specified event such as mouse passing over or being(5)clicked or a time elapsing. Or an image can be moved from one place to another by "dragging and dropping" the image(6)object with the mouse. These event possibilities can be viewed as the(7)reaction capabilities ofthe element or object. Any change takes place immediately since all variations of all(8)elements or objects have been sent as part of the same page from the Web server that sent the page. Thus, variations can be thought ofas different(9)properties ofthe object.

Not only can element variations change text wording or color but also everything contained within a heading object can be(10)replaced with new content that includes different or additional HTML as well as different text. Microsoft calls this the "Text Range technology."

供选择的答案：

1．reaction 2．specified 3．elements 4．name 5．clicked

6．viewed 7．object 8．heading 9．replaced 10．properties

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第3题

从供选择的答案中选出应填入下面一段英文中______内的正确答案。

Java was introduced by Sun Microsystems in 1995 and instantly(1)created a new sense of the interactive possibilities ofthe Web. Both ofthe major Web browsers include a Java(2)virtual machine. Almost all major operating system developers (IBM, Microsoft, and others) have added Java(3)compilers as part oftheir product offerings.

The Java virtual machine includes an optional just-in-time compiler that(4)dynamically compiles bytecode into executable code as an alternative to(5)interpreting one bytecode instruction at a time. In many(6)cases, the dynamic JIT compilation is faster than the virtual machine interpretation.

JavaScript should not be(7)confused with Java. JavaScript, which originated at Netscape, is interpreted at a higher level, is easier to learn than Java, but(8)lacks some of the portability of Java and the speed of bytecode. Because Java applets will run on almost any operating system without(8)requiring recompilation and because Java has no operating system-unique extensions or variations, Java is generally regarded as the most strategic(10)language in which to develop applications for the Web.

供选择的答案：

1．confused 2．compilers 3．dynamically 4．requiring 5．cases

6．interpreting 7．language 8．virtual 9．created 10．lacks

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第4题

从供选择的答案中选出应填入下面一段英文中______内的正确答案。

File Transfer Protocol (FTP),a standard Internet protocol, is the simplest way to(1)exchange files between computers on the Internet. Like the Hypertext Transfer Protocol (HTTP), which transfers displayable Web(2)pages and related files, and the Simple Mail Transfer Protocol (SMTP), which transfers e-mail, FTP is an(3)application protocol that uses the Internet's TCP/IP protocols. FTP is commonly used to transfer Web page files from their creator to the computer that acts as their(4)server for everyone on the Internet. It's also commonly used to(5)download programs and other files to your computer from other servers.

As a user, you can use FTP with a simple(6)command line interface (for example, from the Windows MS-DOS Prompt window) or with a commercial program that offers a graphical user(7)interface. Your Web browser can also make FTP requests to download programs you select from a Web page. Using FTP, you can also(8)update (delete, rename, move, and copy) files at a server. You need to logon to an FTP server. However, publicly available files are(9)easily accessed using anonymous FTP.

Basic FTP support is usually provided as part of a suite of programs that come with TCP/IP. However, any FTP(10)client program with a graphical user interface usually must be downloaded from the company that makes it.

供选择的答案：

1．download 2．exchange 3．update 4．interface 5．server

6．client 7．command 8．pages 9．easily 10．application

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第5题

从供选择的答案中选出应填入下面一段英文中______内的正确答案。

A light-emitting diode (LED) is a semiconductor(1)that emits visible light when an electric current passes throughit.The light is not particularly(2), but in most LEDs it is monochromatic, occurring at a single(3). The output from an LED can range from red (at a wavelength of approximately 700 nanometers) to blue-violet (about 400 nanometers). Some LEDs(4)infrared (IR) energy (830 nanometers or longer); such a device is known as an infrared-emitting diode (IRED).

An LED or IRED(5)of two elements of processed material called P-type semiconductors and N-type semiconductors. These two elements are(6)in direct contact, forming a region called the P-N junction. In this respect, the LED or IRED(7)most other diode types, but there are important(8). The LED or IRED has a transparent package, allowing(9)or IR energy to pass through. Also, the LED or IRED has a large PN-junction area whose(10)is tailored to the application.

供选择的答案：

1．wavelength 2．shape 3．emit 4．device 5．resembles

6．bright 7．visible 8．consists 9．differences 10．placed

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第6题

从供选择的答案中选出应填入下面一段英文中______内的正确答案。

In data processing, using an office metaphor, a file is a related collection of(1)records.For example, you might put the records you have on each of your customers in a(2)file. In turn, each record would(3)consist of fields for individual data items, such as customer name, customer, customer number, customer address, and so forth. By providing the same(4)information in the same fields in each record (so that all records are consistent), your file will be easily(5)accessible for analysis and manipulation by a computer(6)program. This use of the term has become somewhat less important with the advent of the(7)database and its emphasis on the table as a way of collecting record and field data. In mainframe systems, the term data set is generally(8)synonymous with file but implies a specific form of organization recognized by a particular access method. Depending on the(9)operatng system, files (and data sets) are contained within a catalog,(10)directory, or folder.

供选择的答案：

1．information 2．directory 3．database 4．consist 5．program

6．synonymous 7．operating 8．records 9．accessible 10．file

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第7题

从下面提供的答案中选出应填入下列英文语句中______内的正确答案。

Application development increasingly means Windows development, and the popularity of visual development tools has(1)in tandem with Windows itself These tools create beautiful windowing(2), and their fast development cycles and easy learning curves make them a good(3)for many types of PC development projects. Today's developers are leveraging these tools and the abundance of heap, powerful PCs to shift the balance of power to the desktop.

As the world moves inexorably toward Windows and other(4)user interfaces, developers can choose from an abundance of(5)oriented tools. Popular examples include Microsoft Corp.'s Visual Basic, Powersoft Corp.'s PowerBuilder, Gupta Technology Corp.'s SQL Windows，and so on.

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第8题

下列 for 语句中，在 in 后使用不正确的是：_____________ for x in ___________ : print(x)

A、range(0, 10, 5)

B、(1)

C、[1, 2, 3, 4, 5]

D、set('abcd')

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第9题

从下面提供的答案中选出应填入下列英文语句中______内的正确答案。

While most recent attention in the AI field has been focused on expert system software, AI(1)has also seen dramatic advances. Activity in the past years was characterized by new low-cost, powerful LISP machines, the introduction of A1 workstations, LISP compilers becoming available for all major professional and engineering workstations, and the personal computer emerging as a(2)tool for expert system development .The next few years will see this technology evolve further.

Because the(3)of an AI computer represents a sizeable investment, companies should carefully(4)all options that are available as well as have a good idea of what the next generation of systems will offer in order to(5)the optimum system. This publication provides the information necessary to gain this understanding.

供选择的答案：

(1) choice (2) read (3) important (4) software (5) hardware

(6) significant (7) emergence (8) survey (9) purchase (10) select

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