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
Telecommuting, Internet shopping and online meetings may save energy as compared with in-person alternatives, but as the digital
Telecommuting, Internet shopping and online meetings may save energy as compared with in-person alternatives, but as the digital
admin
2015-07-13
66
问题
Telecommuting, Internet shopping and online meetings may save energy as compared with in-person alternatives, but as the digital age moves on, its green reputation is turning a lot browner. Last year, E-mailing consumed as much as 1.5 percent of the nation’s electricity—half of which comes from coal.
In 2005 the computers of the world ate up 123 billion kilo-watt hours ofenergy. As a result, the power bill to run a computer over its lifetime will surpass the cost of buying the machine in the first place—giving Internet and computer companies a business reason to cut energy costs, as well as an environmental one. One of the biggest energy sinks comes not from the computers themselves but from the air-conditioning needed to keep them from overheating. For every kilowatt-hour of energy used for computing in a data center, another kilowatt-hour is required to cool the furnace like racks of servers.
For Internet giant Google, this reality has driven efforts such as the installation of a solar array that can provide 30 percent of the peak power needs of its headquarters as well as increasing purchases of renewable energy. But to deliver Web pages within seconds, the firm must maintain hundreds of thousands of computer servers in cavernous buildings. "We are actively working to maximize the efficiency of our data centers, which account for most of the energy Google consumes worldwide." remarks Google’s green energy czar Bill Weihl. Google will funnel some of its profits into a new effort, dubbed RE
In the meantime, the industry as a whole has employed a few tricks to save watts. Efforts include rearranging the stacks of servers and the mechanics of their cooling, and using software to create multiple "virtual" computers, rather than having to deploy several real ones. Such virtualization has allowed computer maker Hewlett-Packard to consolidate 86 data centers spread throughout the world to just three, with three backups, says Pat Tiernan, the firm’s vice president of social and environmental responsibility.
The industry is also tackling the energy issue at the computer-chip level. Chipmakers such as Intel and AMD have shifted to so-called multi-core technology, which packs multiple processors into one circuit rather than separating them. "When we moved to multi-core and throttled down microprocessors, the energy savings were pretty substantial," says Allyson Klein, Intel’s marketing manager. Chipmakers continue to shrink circuits on the nanoscale as well, which "means a chip needs less electricity" to deliver the same performance, she adds.
The sentence "its green reputation is turning a lot browner" (Para. 1) shows that the digital industry
选项
A、does not help save energy any more
B、is not so environmental friendly as before
C、consumes most of the nation’s electricity
D、has ruined its own green reputation
答案
B
解析
语义理解题。第一句but之前讲到网络活动可能更节约能源,但转折后却说其环保名声正变得越来越黯淡,第二句更是举例说到耗电量,隐含意思是网络活动变得不够环保,故B项与之相符。
转载请注明原文地址:https://kaotiyun.com/show/zq74777K
0
考研英语一
相关试题推荐
Publicimagereferstohowacompanyisviewedbyitscustomers,suppliers,andstockholders,bythefinancialcommunity,bythe
Oneofthemosteminentofpsychologists,ClarkHull,claimedthattheessenceofreasoningliesintheputtingtogetheroftwo
Oneofthemosteminentofpsychologists,ClarkHull,claimedthattheessenceofreasoningliesintheputtingtogetheroftwo
In1998consumerscouldpurchasevirtuallyanythingovertheInternet.Books,compactdiscs,andevenstockswereavailablefrom
TheUnitedStatesinthe1990shashadsevenyearsofeconomicboomwithlowunemployment,lowinflation,andlowgovernmentdef
ResearchersledbyNewYorkUniversityneuroscientistJosephLeDouxrecentlyclaimedtobethefirstscientiststoeraseasingl
Thepastyearortwohastestedtheideathatallpublicityisgoodpublicity,atleastwhenitcomestobusiness.Undeservedbo
随机试题
人民当家作主和依法治国的根本保障是
患者,男性59岁,慢性肝炎病史20年,腹胀、尿少,近期出现神志恍惚、言语多,考虑肝性脑病,应首先进行哪项血液检查
穿无菌衣和戴无菌手套后,必须保持无菌的部位是()。
下列细菌中,产生毒素与噬菌体有关的是
A.应当至少检查一个最小包装B.可不开箱检查C.应当检查箱内的所有最小包装D.可不打开最小包装根据2013年1月发布的《药品经营质量管理规范》药品批发企业对实施批签发管理的生物制品的验收要求是
李祥与银行签订借款抵押担保合同,以一幢价格为20万元的房屋作抵押,借款15万元,并办理抵押登记;后李祥从袁某处借款7万元,仍以该房屋抵押担保,并办理了登记。李祥又以家中冰箱彩电等总计2.5万元作抵押,向蒋某借款3万元,写了借条和抵押担保书;后李祥从沈某处借
在某建设工程施工过程中,由于出现脚手架倒塌事故而造成实际进度拖后,承包商根据监理工程师指令采取赶工措施后,仍未能按合同工期完成所承包的任务,则承包商()。
下列选项中,()属于建设工程项目管理进度控制的技术措施。
取保候审由哪一部门执行?()
根据下列材料回答问题。2017年()全国规模以上文化及相关产业收入合计数同比增速最高。
最新回复
(
0
)