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[主观题]

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。 Bluetooth is a telecommunications indus

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。

Bluetooth is a telecommunications industry(1)specification that describes how mobile phones, computers, and personal digital assistants (PDAs) can be easily interconnected using a short-range(2)wireless connection. Using this technology, users of cellular phones, pagers, and personal digital assistants can buy a three-in-one phone that can(3)double as a portable phone at home or in the office, get quickly(4)synchronized with information in a desktop or notebook computer, initiate the sending or receiving of a fax, initiate a print-out, and, in general, have all mobile and fixed computer devices be totally(5)coordinated.

Bluetooth requires that a low-cost transceiver chip be included in each device. The transceiver(6)transmits and receives in a previously unused frequency band of 2.45 GHz that is available(7)globally (with some variation of bandwidth in different countries), In addition to data, up to three voice(8)channels are available. Each device has a unique 48-bit address from the IEEE 802 standard. Connections can be point-to-point or(9)multipoint. The maximum range is 10 meters. Data can be exchanged at a rate of 1 megabit per second (up to 2 Mbps in the second generation of the technology). A frequency hop scheme allows devices to(10)communicate even in areas with a great deal of electromagnetic interference. Built-in encryption and verification is provided.

供选择的答案：

1．globally 2．coordinated 3．multipoint 4．communicate 5．specification

6．transmits 7．wireless 8．double 9．channels 10．synchronized

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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…”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。 Programming is a （1) that has variou

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。

Programming is a(1)that has various engineering and(2)aspects. Although most of aspects are interrelated, each of them covers a number of(3)and goals. which are very specific. The progress being made in teaching(4)is reflected by the fact that most(5)science curricula contain a broad spectrum of programming courses, each emphasizing a different aspect of programming.

侠选择的答案：

(1) notation (2) physical (3) function (4) discipline (5) philosophy

(6) software engineering (7) charactenstics (8) mathematical (9) progranun/ng

(10) program (11) method (12) computer

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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。 In computers, encoding is the process o

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 computers, encoding is the process of putting a sequence of(1)characters (letters, numbers, punctuation, and certain symbols) into a specialized(2)format for efficient transmission or storage.(3)Decoding is the opposite process—the conversion of an encoded format back into the original(4)sequence of characters. Encoding and decoding are used in data communications, networking, and storage. The term is especially(5)applicable to radio (wireless) communications systems.

The terms encoding and decoding are often used in reference to the(6)processes of analog-to-digital conversion and digital-to-analog conversion. In this sense, these(7)terms can apply to any form of data, including text, images, audio, video,(8)multimedia, computer programs, or signals in sensors, telernetry, and control systems. Encoding should not be confused with encryption, a process in which data is deliberately altered so as to(9)concealits content. Encryption can be done without changing the particular(10)code that the content is in, and encoding can be done without deliberately concealing the content.

供选择的答案：

1．terms 2．Decoding 3．processes 4．format 5．code

6．multimedia 7．applicable 8．conceal 9．equence 10．characters

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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。 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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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。 Each page element （division or section,

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5题

选出应填入下面一段英语中______内的正确答案 The terms FIFO and LIFO refer to two techniques for （1

选出应填入下面一段英语中______内的正确答案

The terms FIFO and LIFO refer to two techniques for(1)with collection of items to which additions and(2)are to be made. The acronym FIFO(3)for first-in-first-out and LIFO represents last-in-first-out. Derived from business accounting and investing management(4), these techniques have found widespread application in computer science. For example, the LIFO technique has been used in the parsing techniques employed by compilers and in the(5)of data.

供选择的答案：

(1) producing (2) dealing (3) networking (4) searching

(5) deletions (6) locations (7) observations (8) notations

(9) stands (10) represents (11) finds (12) replaces

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第6题

选出应填入下面一段英语中______内的正确答案。 Although the bulk ofindustry resources and energies hav

选出应填入下面一段英语中______内的正确答案。

Although the bulk ofindustry resources and energies have focused on developing the fastest(1)or slickest(2), more and more mindshare is turning to the evolution of the computer interface. Advancements in the areas ofinput device,(3)processing and virtual reality could lead to fundamental changes in the way human and computer interact. The technological battlefield of the future will be adding layers between the user and the raw machine to make the(4)as invisible as possible.(5)represents the next evolutionary step for the interface.

供选择的答案：

(1) voice (2) microprocessor (3) GUI (4) workstation

(5) application software (6) operating system

(7) interface (8) DBMS (9) virtual reality (10) eye-tracking device

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第7题

选出应填入下面一段英语中______内的正确答案。 Asynchronous Transfer Mode （ATM)is a （1) that promi

选出应填入下面一段英语中______内的正确答案。

Asynchronous Transfer Mode (ATM)is a(1)that promises to change the fabric of local and wide area communications.

The key advantage of ATM is the capability to move voice, data, graphics and(2)at speeds ofup to 2 gigabits per second.

At ATM switch allows you to create a(3)network that is completely independent from the(4)configuration ofthe network.

ATM uses a(5)called cell switching to convert data into fixed length cells of 53 bytes each, so they can be switched very quickly and efficiently.

供选择的答案：

(1) technology (2) techniques (3) technique (4) method

(5) methods (6) logical (7) local (8) wide

(9) physical (10) program (11) characters (12) video images

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第8题

选出应填入下面一段英语中______内的正确答案。 Electronic mail, or mail, as it is known to its many fa

选出应填入下面一段英语中______内的正确答案。

Electronic mail, or mail, as it is known to its many fans, has been around for over two decades. Typically, email systems support five basic functions, as described below.(1)refers to the process of creating messages and answers.(2)refers to moving messages from the originator to the recipient.(3)has to do with telling the originator what happened to the message. Was it rejected？ Was it lost？(4)incoming message is needed. So people can read their email.(5)is the final step and concerns what the recipient does with the message after receiving it。

供选择的答案：

(1) Communication (2) Coruposition (3) Displaying (4) Disposition

(5) Network (6) Protocol (7) Reporting (8) Serving

(9) Terminating (10) Transfer

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第9题

从供选择的答案中，选出应填入下面叙述中______内的最确切的解答。 Soon, more of the information we recel

从供选择的答案中，选出应填入下面叙述中______内的最确切的解答。

Soon, more of the information we recelve via the internet could come(1)in digital wrappers.

Wrappers are made up(2)software code that's targeted to do specific things with the data(3)within them, such as helping to define queries for search engines. They also keep(4)from(5)access to that code.

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