更多"The electronic computer is ______so"的相关试题:
[单项选择]The electronic computer is chiefly characterized by its accurate and rapid computation.（）
A. 电子计算机的主要特性是计算准确和计算迅速。
B. 电子计算机的主要特点是计算准确而迅速。
C. 电子计算机是准确而迅速的。
D. 电子计算机被准确和迅速定为其首要个性。
[单项选择] Electronic computer speeds are restricted not only by the speed of electrons in matter but also by the escalating density of interconnections necessary to connect the electronic gates on microchips. Electrical engineers and physicists have been developing and augmenting the technologies of analog and digital optical computing, in which the information is primarily carried by photons rather than by electrons. Optical computing could, in principle, generate much higher computer speeds, but one of the problems it has encountered lies in accuracy, for these devices have practical limits of 8 to 11 bits of accuracy in basic operations. Recent research has evinced that digital partitioning algorithms in tandem with error-correction codes, can substantially enhance the accuracy of optical computing operations. In the near term optical computers will most likely be hybrid optical/electronic systems that preprocess input data for computation and post-process output data via electronic circuit
A. Digital partitioning algorithms could be applied to electronic, and not just optical circuits.
B. The speed of photons could be shown to be significantly greater than that of electrons.
C. The precision level in basic operations can be substantially increased without great expense.
D. The accuracy of electronic circuits used to preprocess input data and post- process data could be greatly increased.
E. The microchips optical computer systems were shown to require an increasing density of interconnections.
[单项选择]With the introduction of the electronic computer, there is no complicated problem can be solved in a few hours.
A. but
B. which
C. that
D. what
[单项选择]The speed with which an electronic computer works depends on its（）
A. electronic circuits
B. programmer
C. vacuum tubes, or transistors
D. instructions
[单项选择]Computer data bases and electronic mail systems have been around since the late 1970s.（）
A. 计算机数据库和电子邮件自20世纪70年代末，便无处不在了。
B. 20世纪70年代后期以来，计算机数据库和电子邮件系统已被广泛使用。
C. 20世纪70年代末，计算机数据基础和电子邮递系统就已经在大家周围了。
D. 在20世纪70年代后期，计算机数据库和电子邮件已普及了。
[单项选择]Computer date base and electronic mail systems have been around since the late 1970s.（）
A. 计算技术数据库和电子邮件自20世纪70年代末，便无处不在了。
B. 20世纪70年代后期以来，计算机数据库和电子邮件系统已广泛使用。
C. 到20世纪70年代，计算机数据基础和电子邮件系统就已经存在了。
D. 在20世纪70年代后期，计算机数据库和电子邮件已经普及了。
[单项选择]（） some of the tasks done by man before, computers are sometimes called thinking machines.
A. Taking over
B. To have taken over
C. To take over
D. To be taken over
[填空题]
Computer Virus and Virus Scan
A computer virus is a software program that attaches itself to another program in computer memory or on a disk, and spreads from one program to another. Viruses can damage data, cause computers to crash, display offending or bothersome messages, or lie dormant (保持静止的状态) until such time they are set to "awaken". In today’s industry, scanning is no longer considered to be an extravagance--but a necessity. Computer viruses no longer attack your computing environment only but all other computing environments which you contact. Computer viruses can attach themselves to the files being used and later propagate (复制) themselves through disks and files. Important information and hardware losses could plague (瘟疫，烦扰) your computing environment should you not take the proper precautions.
Many anti-virus products, such as Virus Scan, hold up the list of proper precautions. Scheduled periodic scans of your computing environme
[单项选择]
The computer virus is an outcome of the computer overgrowth in the 1980s. The cause of the term "computer virus" is the likeness between the biological virus and the evil program infected with computers. The origin of this term came from an American science fiction The Adolescence of P-l written by Thomas J. Ryan, published in 1977. Human viruses invade a living cell and turn it into a factory for manufacturing viruses. However, computer viruses are small programs. They expand by attaching a copy of themselves to another program. Once attached to the host program, the vi ruses then look for other programs to "infect". In this way, the virus can spread quickly throughout a hard disk or an entire organization when it infects a LAN or a multi-user system. The timing of the attack can be linked to a number of situations, including a certain time or date, the presence of a particular file, the security level of the user, and the number of times a file is used. Like
A. It resembles the biological virus.
B. It works the same way as the human virus.
C. It influences the human as the biological viruses do.
D. It spreads to people who use the infected computers.
[单项选择]Some researchers have undertaken some psychological studies which prove that many children develop fears of ______ dangers.
A. imagination
B. imaginary
C. imaginable
D. imaginative
[简答题]There is some impertinence as well as some foolhardiness in the way in which we buy animals for so much gold and silver and call them ours. One cannot help wondering what the silent critic on the hearthrug thinks of our strange conventions-the mystic. Persian, whose ancestors were worshipped as gods whilst we, their masters and mistresses, groveled in caves and painted our bodies blue. She has a vast heritage of experience, which seems to brood in her eyes, too solemn and too subtle for expression; she smiles, I often think, at our late-born civilization, and remembers the rise and fall of dynasties. There is something, too, profane in the familiarity, half contemptuous, with which we treat our animals. We deliberately transplant a little bit of simple wild life, and make it grow up beside ours, which is neither simple nor wild. You may often see in a dog’s eyes a sudden look of the primitive animal, as though he were once more a wild dog hunting in the solitary places of his youth. Ho
[单项选择]
Passage One
Electronic books could revolutionize reading, but people ought to consider their far-reaching impacts as well. "The e-book promises to wreak a slow havoc (浩劫) on life as we know it," Jason Ohler, professor of technology assessment (评估), university of Alaska Southeast In Juneau, warned the World Future Society, Bethesda, Md. His assessment weighed the pros and cons (赞成和反对的理由) of e-book technology’s impact on social relationships, the environment, the economy, etc. Before you curl up (蜷曲) with an e-book, consider the disadvantages.
They increase eyestrain due to poor screen resolution, replace a relatively cheap commodity with a more expensive one, and displace workers in print book production and traditional publishing. E-books make it easy to share data, thereby threatening copyright agreements and reducing compensation of authors, as well as creating nonbiodegradable (不可生物降解的) trash.
On the other hand, e-books save paper
A. They are unable to be broken down into harmless products.
B. They consume a lot of natural resources.
C. They produce harmful gases.
D. They are capable of being reused.
