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
外语
As another active hurricane season in the Atlantic winds down, some atmospheric scientists say they have the tools to stop or sl
As another active hurricane season in the Atlantic winds down, some atmospheric scientists say they have the tools to stop or sl
admin
2013-09-24
66
问题
As another active hurricane season in the Atlantic winds down, some atmospheric scientists say they have the tools to stop or slow the powerful storms. Their efforts, however, are hampered by a lack of funding and tricky legal issues.
Until recently, the US Department of Homeland Security has been investigating whether seeding storm clouds with pollution-size aerosols(particles suspended in gas)might help slow tropical cyclones. Computer models suggest that deploying(散开)aerosols can have "an appreciable impact on tropical cyclone intensity.’’ writes William Cotton, an atmospheric scientist at Colorado State University. He and his colleagues recently reviewed such work in the Journal of Weather Modification. In fact, human pollution may already be weakening storms, including August’s Hurricane Irene. "Computer models all predicted that the intensity of Irene would be much greater than it was," Cotton notes.
Other would-be storm stoppers, including Microsoft billionaire Bill Gates, have focused on feeding cold water to the hot storms to slow their momentum. The Gates-backed plan proposes using a fleet of wave powered rafts to spread the colder ocean water pumped up from the depths in the path of an onrushing storm. The trouble with that process is that it could prove unwieldy(难操纵的). It would require hundreds of devices, and because storms are so difficult to track, placing them would be a challenge. Moreover, would dispelling storms with cold water be a good idea? Tropical cyclones, for all their destructive force, are one of the planet’s ways of redistributing heat from the tropics to the poles. Shutting that down might have unforeseen consequences, and shifting a storm’s course could cause punitive action from people in the new path, as a team of engineers, public policy experts and atmospheric scientists wrote in Environmental Science and Technology in April.
Regardless, for all their power, tropical cyclones are sensitive. To exploit that sensitivity, scientists would need accurate information on a storm’s future course, says meteorologist Ross Hoffman of Atmospheric and Environmental Research. But the US government is cutting funding for the satellites that make such tracking and prediction possible. For now flood maps and evacuation(疏散)plans remain our best protection.
What would be a challenge to the Gates-backed plan?
选项
A、To keep track of the powerful storms.
B、To build the durable wave-powered rafts.
C、To pump up water from the depths of the ocean.
D、To invent hundreds of related devices.
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/RHc7777K
0
大学英语四级
相关试题推荐
ThenewUShealth-insurancerulesaredesignedtohelpthosecaughtinMedicare’s"doughnuthole",offerseniorsmorepreventati
ThenewUShealth-insurancerulesaredesignedtohelpthosecaughtinMedicare’s"doughnuthole",offerseniorsmorepreventati
AnimalsontheMoveItlookedlikeascenefrom"Jaws"butwithoutthedramaticmusic.Ahugesharkwaslowlyswimmingthrou
ORPHANSwhoseparentsdiedofAIDSinHenanProvincehavebeengivennewhope.Lastweekthe【B1】______governmentansweredthech
Theaccessibilityofcleanwaterisoneofthemostimportantcomponentsinthehealthofyoungchildren.Inmanyareas,disease
Educatinggirlsquitepossiblyyieldsahigherrateofreturnthananyotherinvestmentavailableinthedevelopingworld.Women
Alandfreefromdestruction,pluswealth,naturalresources,andlaborsupply—allthesewereimportant【C1】______inhelpingEngl
A、Jessiealwayssayswhatshethinks.B、Jessieseemstohavealotonhermind.C、Jessieiswrongtofindfaultwithherboss.D
A、Americansalwaysseemtobeonthemove.B、Americansknowalotaboutinternationalaffairs.C、Americans’areverypatient.D、
A、Theyweremainlyplacedbythefireside.B、Theywereusedbyhuntersinthepasture.C、Theywereusedasmajormotivepower.D
随机试题
组合件是由数个元件组成的独立部件,按其用途不同有定位元件、________元件、________元件、________元件、________元件等。
具有攻毒蚀疮功效的药物是()
张某,咳喘短气,动则尤甚,咳声低弱,痰吐稀薄,自汗恶风,易感冒,舌淡红,苔薄白,脉细弱。本病例宜选方是
下列关于低胆固醇膳食配餐原则应除外哪项()。
反映组织最高管理者的质量宗旨、经营理念和价值观的是()。
网络企业是核心企业利用自己的技术和品牌优势,负责生产产品中的关键部件,其他相关业务分别通过()形式给予其他具有相对优势的单位。
Hereismyideaabouthowafriendislike.Firstly,【M1】______afriendissomeoneyoucanshareyoursecrets.Ifyou【M2】______
A.Ⅰ型疱疹病毒B.Ⅱ型疱疹病毒C.水痘一带状疱疹病毒D.柯萨奇病毒A16E.柯萨奇病毒A4引起带状疱疹的病毒是()。
Hedidn’tcatchthelatebus,______hehadtowalkhome.
HuiyuanServiceApartmentLocatedintheAsianGamesVillage,witha10,000㎡centralgardenandachildren’splayground.Eig
最新回复
(
0
)