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
Renewable energy sources can be replenished in a short period of time. The five renewable sources used most often include hydrop
Renewable energy sources can be replenished in a short period of time. The five renewable sources used most often include hydrop
admin
2010-04-24
48
问题
Renewable energy sources can be replenished in a short period of time. The five renewable sources used most often include hydropower (water), solar, wind, geothermal, and biomass. Renewable energy’s impact on the world’s energy picture is significant. Many important events have occurred during the history of using renewable sources to generate electricity--but the overall consumption from renewable energy sources has declined by about 15 percent from their I996 peak to about 6 quads in 2005.
The use of renewable energy is not new. Five generations (125 years) ago, wood supplied up to 90 percent of our energy needs. Due to the convenience and low prices of fossil fuels, wood use has fallen. Now, the biomass which would normally present a disposal problem is converted into electricity (e.g., manufacturing wastes, rice hulls, and black liquor from paper production).
Historically, low fossil fuel prices, especially for natural gas, have made growth difficult for renewable fuels. The deregulation and restructuring of the electric power industry could have a major impact on renewable energy consumption. Demands for cheaper power in the short term would likely decrease demand for renewable energy, while preferences for renewables included in some versions of proposed electricity restructuring legislation would breathe new life into this industry.
Use of renewables in the United States is not currently expected to approach that of the major fuels, and due to their limitatious (e.g., their intermittent nature-cloudy days have no solar gain, quiet days mean no wind blows to drive wind turbines, dams are primarily for flood control, so hydroelectricity production varies as dams’ water levels change), renewables may never provide "the" answer to all energy problems. Around the world, renewable energy is proving to be of great value.
In 2005, about 6.1 Quadrillion Btu (Quads) of U.S. energy came from renewable fuels. Each of the energy sources we use is measured, purchased, and sold in a different form. Many units of measurement are used to measure the energy we use each day.
In Para. 3, the author implies ______.
选项
A、electric power industry depends on renewable energy
B、economic factor influenced the use of renewable energy
C、electricity restructuring laws have been made
D、legislation will hinder the consumption of renewable energy
答案
B
解析
细节理解题。对应文中第三段 Demands for cheaper power in the short term would likely decrease demand for renewable energy... 可知答案是B。in the short term 就眼前来说legislation n.立法。
转载请注明原文地址:https://kaotiyun.com/show/f22K777K
0
专业英语四级
相关试题推荐
Whatistheprobablerelationshipbetweenthetwospeakers?
Whatisreportedtohavecausedthedeathofatleast17people?
Itisprobablethatwhenmenfirstpaintedtheirfacesmany【C1】______ofyearsago,itwas【C2】______thepurposeoffrightening
Althoughthecolonists______tosomeextentwiththenativeAmericans,theIndians’influenceonAmericancultureandlanguage
Islanguage,likefood,abasichumanneedwithoutwhichachildatacriticalperiodoflifecanbestarvedanddamaged?Judgin
Advertisingmedialikedirectmail,radio,televisionandnewspapers______toincreasethesalesofindustrialproducts.
Ourape-menforefathershadnoobviousnaturalweaponsinthestruggleforsurvivalintheopen.Theyhadneitherthepowerfult
EvangelicalChristians,buoyedbythere-electionofPresidentBush,areturningAmericanschoolsintoabattlegroundoverwheth
High-speedInternetproviderAtHomeCorp.isbuyingExciteInc.,oneoftheleadingdestinationsontheWorldWideWeb,forabo
随机试题
肛管长约
工程监理企业组织形式中,由()决定聘任或者解聘有限责任公司的经理。
根据工程质量事故造成的人员伤亡或者直接经济损失,工程质量事故分为()
全玻幕墙安装符合技术要求的是()。
会计凭证是在经济业务发生或完成时由会计人员填制的凭证,因此它具有一定的法律效力。()
在各生产步骤都要计算产品成本的情况下,采用综合逐步结转分步法进行产品成本核算,不便于通过产品成本明细账分别考察各生产步骤存货占用资金情况。()
某股份有限公司共发行股份3000万股,每股享有平等的表决权。公司拟召开股东大会对另一公司合并的事项作出决议。在股东大会表决时可能出现下列情形中,能使决议得以通过的是()。
在《圣经.旧约》的记载中,带领以色列人走出埃及、回到迦南的领袖是()。
但书
ThemanagersatTurnerswantedtobuythecompanybecauseit
最新回复
(
0
)