首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
考研
If phone calls and web pages can be beamed through the air to portable devices, then why not electrical power, too? It is a ques
If phone calls and web pages can be beamed through the air to portable devices, then why not electrical power, too? It is a ques
admin
2011-02-25
63
问题
If phone calls and web pages can be beamed through the air to portable devices, then why not electrical power, too? It is a question many consumers and device manufacturers have been asking themselves for some time. But to seasoned observers of the electronics industry, the promise of wireless recharging sounds depressingly familiar. In 2004 Splashpower, a British technology firm, was citing “very strong” interest from consumer-electronics firms for its wireless charging pad. Based on the principle of electromagnetic induction (EMI) that Faraday had discovered in the 19th century, the company’s “Splashpad” contained a coil that generated a magnetic field when a current flowed through it. When a mobile device containing a corresponding coil was brought near the pad, the process was reversed as the magnetic field generated a current in the second coil, charging the device’ s battery without the use of wires. Unfortunately, although Faraday’s principles of electromagnetic induction have stood the test of time, Splashpower has not — it was declared bankrupt last year without having launched a single product.
Thanks to its simplicity .and measurability, electromagnetic induction is still the technology of choice among many of the remaining companies in the wireless-charging arena. But, as Splashpower found, turning the theory into profitable practice is not straightforward. But lately there have been some promising developments.
The first is the formation in December 2008 of the Wireless Power Consortium, a body dedicated to establishing a common standard for inductive wireless charging, and thus promoting its adoption. The new consortium’s members include big consumer-electronics firms, such as Philips and Sanyo, as well as Texas Instruments, a chipmaker.
Fierce competition between manufacturers of mobile devices is also accelerating the introduction of wireless charging. The star of this year’s Consumer Electronics Show held in Las Vegas was the Pre, a smart-phone from Palm. The Pre has an optional charging pad, called the Touchstone, which uses electromagnetic induction to charge the device wirelessly.
As wireless-charging equipment based on electromagnetic induction heads towards the market, a number of alternative technologies are also being developed. PowerBeam, a start-up based in Silicon Valley, uses lasers to beam power from one place to another.
It now seems to be a matter of when, rather than if, wireless charging enters the mainstream. And if those in the field do find themselves languishing in the disillusionment, they could take some encouragement from Faraday himself. He observed that “nothing is too wonderful to be true if it be consistent with the laws of nature.” Not even a wirelessly rechargeable iPhone.
The author gives the example of Touchstone to show
选项
A、the smart phone Pre has enough creativeness to be the star of the show.
B、intensified competition promotes the introduction of wireless charging.
C、big companies have been trying hard to promote wireless charging.
D、the Wireless Power Consortium has done a great job up till now.
答案
B
解析
推理判断题。Touchstone出现在第四段末尾。一般来说,例子是用来支持作者的观点的,因此我们首先要找到作者的论点。本段的主题句是首句,提到移动设备制造商之间激烈的竞争加速了无线充电技术的引入,[B]项表达的正是此意,故为答案。[A]项是对第四段第二句和第三句的错误理解,举Pre为例只是为了证明激烈的竞争促进了无线充电技术的发展;[C]项推理无依据;[D]项错误明显, Touchstone是Palm推出的,与Wireless Power Consortium无关。
转载请注明原文地址:https://www.kaotiyun.com/show/udZ4777K
0
考研英语一
相关试题推荐
Youhearagreatmanycomplaintstodayabouttheexcessivesecurityconsciousnessofouryoungpeople.Mycomplaintisthe(1)__
Ascientistwhodoesresearchineconomicpsychologyandwhowantstopredictthewayinwhichconsumerswillspendtheirmoney
Ascientistwhodoesresearchineconomicpsychologyandwhowantstopredictthewayinwhichconsumerswillspendtheirmoney
ThemoralhighgroundhasalwaysbeenfemaleterritorybecauseThereishopeforthe21stcenturyifwomencan
Peoplewhoareunhappy______Ifsuchunhappypersonsdon’tchangetheirbadbehaviour,whatshouldpeopledoaccordingtothea
(46)Basedonaccumulatedsocialresearch,therenowcanbelittledoubtthatsuccessfulandwell-adjustedchildreninmodemsoci
Acommonassumptionabouttheprivatesectorineducationisthatitcatersonlytotheelite.(1)_____,recentresearchpoints
Asmanyofthestoriesinthisbookareaboutman-eatingtigers,itisperhaps(1)_____toexplainwhythoseanimals(2)_____ma
Asmanyofthestoriesinthisbookareaboutman-eatingtigers,itisperhaps(1)_____toexplainwhythoseanimals(2)_____ma
随机试题
海南岛是个绿色宝岛,森林覆盖率超过()%。
论述商品价值量与劳动生产率的关系。
如果发现计算机感染了病毒,可采用_________两种方式立即进行清除。
戏曲作品:《桃花扇》
经产妇,产后第1天,诉下腹痛。查有低热,出汗,咽不充血,无恶心呕吐、腹泻,脐下2横指处触及一硬块上界,白细胞110×10y/L,中性0.75,最可能的诊断是( )
传染性非典型肺炎的病原体为
下列级数中发散的是( )。
1.背景2009年某市一重点工程项目,采用工程量清单方式公开招标。经资格预审后,确定A、B、C、D、E共5家施工单位为合格投标人。招标人规定发放招标文件的开始时间为4月20日,截止时间为4月23日,并要求投标人在领取招标文件的同时递交投标保证金50万元,
按照行政行为的对象或者行政相对人是否为特定的人或组织,行政行为可以分为抽象行政行为和具体行政行为。下列关于具体行政行为的表述中,不正确的是()。
InBritain,ministersareappointedbytheQueenontherecommendationof______.
最新回复
(
0
)