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【单选题】

Windows 98通过提供虚拟机的机制来实现多任务处理功能。下列叙述中,错误的是

A.
Windows 98支持386处理器的三种工作模式
B.
在Windows 98的保护模式下,所有的应用程序都运行在保护级别最低的0环
C.
在通常情况下,Windows 98采用的是并发方式的多任务处理
D.
在Windows 98中,Windows虚拟机分为系统虚拟机和MSDOS虚拟机
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【单选题】Dalvik虚拟机属于Android系统架构中的

A.
应用层
B.
应用框架层
C.
系统运行库层
D.
Linux内核层

【单选题】49() A. Talking on a cell phone while driving brings you joy anyway. B. The estimate is based on surveys with office workers. C. The younger group did 10 percent better when not interrupted. D. Howeve...

A.
A Bad Idea
B.
Think you can walk, drive, take phone, calls, e-mail and listen to music at the same time Well, New York’s new law says you can’t (46) The law went into force last month, following research and a shocking number of accidents that involved people using electronic gadgets(小巧机械)when crossing the street.
C.
Who’s to blame (47) "We are under the impression that our brain can do more than it often can," says Rene Marois, a neuroscientist(神经科学家)in Tennessee. "But a core limitation is the inability to concentrate on two things at once."
D.
The young people are often considered the great multitaskers. (48) A group of 18- to 21-year-olds and a group of 35-to 39-year-olds were given 90 seconds to translate images into numbers, using a simple code. (49) But when both groups were interrupted by a Phone call or an instant message, the older group matched the younger group in speed and accuracy.
E.
It is difficult to measure the productivity lost by multitaskers. But it is probably a lot. Jonathan Spira, chief analyst at Basex, a business-research firm, estimates the cost of interruptions to the American economy at nearly $ 650 billion a year. (50) The surveys conclude that 28 percent of the workers’ time was spent on interruptions and recovery time before they returned to their main tasks.

【单选题】在 KVM 中,虚拟机网卡连接物理网络的方式有两种,分别是

A.
桥接、地址转换
B.
地址转换、直通
C.
桥接、直通
D.
直通、桥接

【单选题】48() A. Talking on a cell phone while driving brings you joy anyway. B. The estimate is based on surveys with office workers. C. The younger group did 10 percent better when not interrupted. D. Howeve...

A.
A Bad Idea
B.
Think you can walk, drive, take phone, calls, e-mail and listen to music at the same time Well, New York’s new law says you can’t (46) The law went into force last month, following research and a shocking number of accidents that involved people using electronic gadgets(小巧机械)when crossing the street.
C.
Who’s to blame (47) "We are under the impression that our brain can do more than it often can," says Rene Marois, a neuroscientist(神经科学家)in Tennessee. "But a core limitation is the inability to concentrate on two things at once."
D.
The young people are often considered the great multitaskers. (48) A group of 18- to 21-year-olds and a group of 35-to 39-year-olds were given 90 seconds to translate images into numbers, using a simple code. (49) But when both groups were interrupted by a Phone call or an instant message, the older group matched the younger group in speed and accuracy.
E.
It is difficult to measure the productivity lost by multitaskers. But it is probably a lot. Jonathan Spira, chief analyst at Basex, a business-research firm, estimates the cost of interruptions to the American economy at nearly $ 650 billion a year. (50) The surveys conclude that 28 percent of the workers’ time was spent on interruptions and recovery time before they returned to their main tasks.