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
In early 2004 eight tiny sensors were dropped from a plane near a military base in California. After hit ting the ground, the se
In early 2004 eight tiny sensors were dropped from a plane near a military base in California. After hit ting the ground, the se
admin
2009-05-24
91
问题
In early 2004 eight tiny sensors were dropped from a plane near a military base in California. After hit ting the ground, the sensors—also known as smart dust sensors organized themselves into a network and quickly detected a fleet of military vehicles on the ground. They determined the direction, speed and size of a series of military vehicles traveling along the road and later transmitted the data to a computer at a nearby base camp.
Smart dust sensors are minicomputers—as small as a grain of rice in some cases—that can monitor and evaluate their physical environment and can relay the information via wireless, communication. They can monitor elements such as temperature, moisture, humidity, pressure, energy use, vibration, light, motion, radiation, gas, and chemicals. These devices will soon have many applications, such as use in emergency rescue.
Software has been developed to run these minicomputers. A key feature of the software is the ability of the sensors to automatically organize themselves into a communications network and talk to each other via wireless radio signals. If any one connection is interrupted, the sensors will self-correct and pass the information on to the next available sensor.
Each sensor has a chip that does the computing work recording things like temperature and motion at its location. Each sensor also has a tiny radio transmitter that allows it to talk to other sensors within 100 feet or so. With a single network of 10,000 sensors—thought to be the biggest array(排列) of sensors currently possible, you could cover 9 square miles and get information about each point along the way. The data finally works its way to a base station that can send the information to a computer or to a wireless network.
The scientists who are working with this technology say smart dust sensors can be used to detect the location or movement of enemy troops in areas too dangerous or remote for soldiers to operate. Scattering hundreds of self-networking sensors from a manned or unmanned plane onto the battlefield, in theory, could produce critical information and lead to strategic advantage. Sensors could also be used to detect the presence of chemical weapons and could give troops the time needed to put on protective gear.
选项
A、giving troops their protective gear
B、organizing themselves into a computer network
C、detecting the movement of military vehicles nearby
D、operating in remote and dangerous War zones
答案
A
解析
其余3项在文章中都可以找到。
转载请注明原文地址:https://kaotiyun.com/show/AxYi777K
本试题收录于:
GCT工程硕士(英语)题库专业硕士分类
0
GCT工程硕士(英语)
专业硕士
相关试题推荐
What’sthepurposeoftheconference?WhichofthefollowingstatementsisTRUEaccordingtothereport.
Theproblemwiththereadingcourseasmentionedinthefirstparagraphisthat______.Themainideaofthepassageisthat__
The"madmoments"inthefirstparagraphreferstothetimewhenwe______.Bygivingtheexample"youmeetMrs.Beattyandyou
Duringthesummersessiontherewillbearevisedscheduleofservicesfortheuniversitycommunity.Specificchangesforinterc
WhendidAmyJohnsonbecomeinterestedinflying?Whatisthepassagemainlyabout?
AccordingtoMcWhorter,thedeclineofformalEnglish______.Theword"talking"(Line5,Paragraph2)denotes
SmartdustsensorscandoallthefollowingEXCEPT______.Tocoveranareaof3squaremilesandgetinformationabouteachpoi
SmartdustsensorscandoallthefollowingEXCEPT______.Ifconnectionbetweentwosensorsisblocked,thenetworkwillautoma
Privateenterpriseisthething.Wewenttoapartyontheriverearlierthissummer.Thehost【31】isoldenoughtoknowbetter,
Privateenterpriseisthething.Wewenttoapartyontheriverearlierthissummer.Thehost【31】isoldenoughtoknowbetter,
随机试题
剥落起因、防治方法。
定性预测的方法有()
A.蛋白质B.甘油三酯C.葡萄糖D.胆固醇E.戊糖热价最高的营养物质是
胚胎期造血叙述正确的为()。
指定交割仓库的日常业务分为()阶段。
某民间非营利组织接受海外人士捐赠的一项专利权,捐赠方没有提供有关凭据,公允价值为100万元。该民间非营利组织正确的会计处理是()。
孙膑“增兵减灶”灭庞涓,诸葛亮上演“空城计”等体现了信息具有()特征。
吴某向人民法院提起行政诉讼,法院以向上级请求为由一直未予任何答复,吴某应当如何处理?()
新版发票自8月1日由地税局正式启用以来,已经越来越为人们所熟悉:但很少有人知道,每张发票都包含了多项科技成果。据地税局的同志介绍,新版发票采用的数字喷码丝网工位印刷技术是目前世界上最先进的印刷技术之一,有效提高了字迹的分辨率。如将新版发票放在5倍放大镜下,
A、Theirqualityisprettyterrible.B、Theycanbewellenjoyed.C、Thedialoguesinthemcanbeheardclearly.D、Theaudioofthe
最新回复
(
0
)