A.可以
B.必須
C.不必要
D.不需要
第1題
從下面提供的答案中選出應(yīng)填入下列英文語句中______內(nèi)的正確答案。
Mobile computers—which(1)laptops, notebooks, subnotebooks and handhelds—(2)so ubiquitous in such a short time, no surprise to hear who say:"It will define the leading edge(3)the next five years or so."The most remarkable(4)mobile computers is the amount of data storage and memory packed(5)their tiny boxes. These devices not only handle windows easily but also run storage-hungry programs.
第2題
A、They have been equipped with modern multi-media teaching facilities.
B、Due to the digital information that exists everywhere, people’s old concepts are no longer true.
C、Information can be accessed by laptops, mobile phones, and iPods.
D、Students can do a lot of things that they couldn’t do in the past.
第3題
In general, ______ tend to be the most energy efficient one.
A.older laptops B.older desktops
C.newer desktops D.newer laptops
第4題
第5題
設(shè)方陣A=(a[subijsub])[subn×nsub]的元素全大于零,且A的每行元素之和均等于1.證明:
第6題
Digital's wireless LAN products are clear leaders in the marketplace. Digital【B11】the industry's most complete portfolio(系列服務(wù)) of mobile and wireless products.【B12】such as wireless PC Cards, wireless ISA adapters and superior wireless bridge, digital cordless telephony【B13】desktop devices to communicate wirelessly with other wireless【B14】, or access network files, services, and devices on the wired network.
Wireless communication technology can also be used for【B15】time data collection in locations【B16】considered too remote, inaccessible or environmentally hostile for conventional wired monitoring systems. Mobile hosts such as notebook and palmtop computers are now widely【B17】and affordable. Today's laptops and notebooks come loaded【B18】almost all imaginable wireless communications devices. This gives desktop PC customers a choice of wireless technology【B19】best suits their mobility and application needs.
Other markets for wireless technology include customer service, retailing, and health care.【B20】every market in the service sector of the economy is a candidate for wireless technologies and services.
【B1】
A.reduces
B.improves
C.disturbs
D.provokes
第7題
A.$490.00
B.$560.00
C.$588.00
D.$686.00
E.$784.00
第8題
They removed personal items-bags,notebooks,her six-year-old son's ______(belong)from the car.
第9題
(Note: The order in which the notebooks are selected does not matter.)
A.3
B.6
C.10
D.14
E.27
第10題
(41)
A.have
B.made
C.had
D.crashed
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