In promising to fuse media as diverse as t

题型:单项选择题

问题:

In promising to fuse media as diverse as television, telephone communication, video games, music and data transmission, the era of digital convergence goes better than yesterday’s celebrated "information superhighway". Yet achieving this single technology is far from straightforward. There are currently three major television broadcast standards, and they are all incompatible with each other. But this is nothing compared to the many technologies supporting the Internet, each with a different bandwidth and physical media. The problems faced in designing platforms and communication systems that will be accepted across the world can appear insuperable.
Even once global standards are assured, however, a further obstacle lies in wait. The Internet is plagued by long, erratic response times because it is a pull-technology, driven by patterns of user demands. Push technology, on the other hand, reverses the relationship: servers simply send information to passive users, as in television and radio. But if some form of combination between one-way television flow and interactive Internet is to be the basis of our future media, it is hard to see how it could be operated. Moreover, the problem of fusing Internet with television is also one of defining the services offered. Information, entertainment and relaxation appear at first to be quite different needs. Serious doubts remain over whether consumers will be interested in having to make the sort of mental effort associated with computing while also settling down in front of a sitcom.
Besides the issue of consumer habits, infrastructure costs are set to be immense, and will have to be met by national states or the private sector before being passed on to users. Platforms do not necessarily have to be expensive. The mobile phone is a good example of how something that is technologically sophisticated can almost be given away, with its cost recovered through service charges. Users are then coerced through clever marketing to upgrade to newer phones with more features to reinforce their dependence.
Whatever the outcome, it is obvious that technology will play an increasing part in our everyday lives. Beyond technology, digital convergence embraces the services, industrial practices and social behavior that form modern society. We have in our hands the technology to construct the most sophisticated machines ever built, but if they are unusable, simply because of their operating instructions, then recent lessons have taught us they will not survive. Whatever we design must be simple, reliable and useful. Perhaps this is where artificial intelligence will come in.

By referring to the mobile phone, the author intends to show______

A. a solution to costs involved in the technology.
B. the importance of catering to customers’ needs.
C. a trick imposed on users by telephone companies.
D. the necessity of adding more features to phones.

考点:普通考研考研数学(三)考研数学三
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动物界中种类最多、数量最大、分布最广的一个类群是 [ ]

A.节肢动物

B.软体动物

C.鸟类

D.哺乳动物

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—Amy, would you __ me to the airport to pick up Jim? I don’t won’t to go there alone.

—No problem.

A.accompany

B.follow

C.replace

D.assist

题型:单项选择题

删除Windows身份验证的“Serverl\nt_user”登录的正确语句是______。

A.EXEC sp_revokelogin‘Serverl\tit_user’

B.DELETE sp_revokelogin‘Serverl\nt_user’

C.DROP sp_revokelogin‘Serverl\nt_user’

D.EXEC sp_droplogin‘ServerI\nt_user’

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一患者因大吐泻而出现体虚欲脱、大汗淋漓、脉微欲绝之症。

治疗中禁忌使用的治法是()

A.开窍醒神

B.益气固脱

C.回阳救逆

D.收敛止汗

E.养阴润燥

题型:单项选择题

以下属于组合投资管理中的投资分析的内容有( )。

A.投资选择

B.投资绩效评估

C.宏观分析

D.行业分析

E.微观分析

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