奥鹏教育云南开放大学计算机专业英语（）形考作业5

奥鹏云南开放大学平时在线作业

计算机专业英语（19秋）形考作业5

The service started in 1992, but ________only the Microsoft Developer Network CD-ROM was available.
A:interact
B:initially
C:identical
D:inherits
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In this case, you can derive your own class from the AsynCompletedEventArgs class and provide_____ private instance variables and corresponding read-only public properties.
A:additional
B:appropriate
C:alter
D:available
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Many resources are available for free online, while others are available by mail____ a subscript.
A:over
B:by
C:through
D:via
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MSDN2 was opened in November 2004 as a source for Visual Studio 2005 API information, with noteworthy difference being updated web site code, conforming better_____ web standards and thus giving a奥鹏云南开放大学平时在线作业 long awaited improved support for alternative web browsers to Internet Explorer in the API browser.
A:out
B:up
C:on
D:to
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This namespace includes the base classes and interfaces for_____attributes and type converters, binding to data sources, and licensing components.
A:executing
B:performing
C:implementing
D:enforcing
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This article is mainly talked about Computer networking and Internet.　　Computers have been used to coordinate information between multiple locations since the 1950s. The U.S. military’s SAGE system was the first large-scale example of such a system, which led to a number of special-purpose commercial systems like Sabre.　　In the 1970s, computer engineers at research institutions throughout the United States began to link their computers together using telecommunications technology. This effort was funded by ARPA (now DARPA), and the computer network that it produced was called the ARPANET. The technologies that made the Arpanet possible spread and evolved.　　In time, the network spread beyond academic and military institutions and became known as the Internet. The emergence of networking involved a redefinition of the nature and boundaries of the computer. Computer operating systems and applications were modified to include the ability to define and access the resources of other computers on the network, such as peripheral devices, stored information, and the like, as extensions of the resources of an individual computer.Initially these facilities were available primarily to people working in high-tech environments, but in the 1990s the spread of applications like E-mail and the World Wide Web, combined with the development of cheap, fast networking technologies like Ethernet and ADSL saw computer networking become almost ubiquitous. In fact, the number of computers that are networked is growing phenomenally. A very large proportion of personal computers regularly connect to the Internet to communicate and receive information. “Wireless” networking, often utilizing mobile phone networks, has meant networking is becoming increasingly ubiquitous even in mobile computing environments.
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