● The Internet is the worlds largest computer (71) .
(71)
A.network
B.device
C.display
D.disk
第1题:
71-73
第71题:
第2题:
Password is a secret series of(69)that enables a user to access a file, computer, or program. On multi-user systems, each user must enter his or her password before the computer will respond to(70). The password helps ensure that(71)users do not access the computer. In addition, data files and programs may require a password.
A.symbol
B.sign
C.characters
D.characteristic
第3题:
A requirement is a feature of the system or a description of something the system is capable of doing in order to fulfill the system's(71).
A.plan
B.purpose
C.document
D.Design
第4题:
Ink-jet printer belongs to nonimpact printers in which the characters are formed by projecting particles or droplets of ink on to paper.(71) printer is also a nonimpact printer in which the characters are produced by applying hot elements to heat-sensitive paper directly or by melting ink from a(72) on to plain paper. Electrostatic printer creates an electrostatic latent image, which is then made visible by a toner and transferred and fixed on paper. An electrostatic printer may be used in some instances as a(73). Laser printer creates, by means of a laser beam directed on a(74) surface, a latent image which is then made visible by a toner and transferred and fixed on paper. Magnetographic printer creates, by means of magnetic heads operating on a metallic drum, a latent image which is then made visible by a toner and transferred and fixed on paper. Computer-output-microfilm (COM) printer produces on a photographic film a(75) of each page.
A.Hot
B.Warm
C.Heat
D.Thermal
第5题:
Whenever new information is entered, it must be stored somewhere in the computer's(70). RAM only(71)the data temporarily. That is, all information stored in the RAM will disappear if you switch the computer off.
A.processor
B.keyboard
C.printer
D.memory
第6题:
71、Internet使用的协议是()
A.TCP/IP
B.HTTP
C.CSMA/CD
D.X.25/X.75