题目内容

52.A _____ records information about you during a Web surfing session such as what Web sites you visited, how long you were there, what ads you looked at, and what you bought.

A.copyright
B.key logger
C.firewall
D.clickstream

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57._____ are types of hackers who break into other people's computer systems and may just look around. They may steal credit card numbers or destroy information, or otherwise do damage.

A.Zombies
B.White-hat hackers
C.Black-hat hackers
D.Drones

60.A(n) ______ is hardware and/or software that protects a computer or a network from intruders.

A.Web log
B.worm
C.firewall
D.public key

如果系统在始末两个平衡态之间经历的过程是无限缓慢的，则系统所经历的每一个中间状态都可以近似地看成是平衡态，我们将此变化过程称为过程。

卡诺循环是由两个可逆过程和两个可逆绝热过程组成的循环。