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 Today petroleum(石油)provides around 40% of the world’s energy needs, mostly fuelling automobiles. Co
Renewable Energy Sources Today petroleum(石油)provides around 40% of the world’s energy needs, mostly fuelling automobiles. Co
admin
2015-07-05
68
问题
Renewable Energy Sources
Today petroleum(石油)provides around 40% of the world’s energy needs, mostly fuelling automobiles. Coal is still used, mostly in power stations, to cover one-quarter of our energy needs, but it is the least efficient, unhealthiest and most environmentally damaging fossil fuel(矿物燃料). Natural gas reserves could fill some of the gap from oil, but reserves of that will not last into the 22nd century either. Most experts predict we will exhaust easily accessible reserves within 50 years. Less-polluting renewable energy sources offer a more practical long-term energy solution. " Renewable" refers to the fact that these resources are not used faster than they can be replaced.
Hydroelectric(水力发电的)power is now the most common form of renewable energy, supplying around 20% of world electricity. China’s Three Gorges Dam is the largest ever. At five times the size of the U. S. ’s Hoover Dam, its 26 turbines(涡轮机)will generate the equivalent energy of 18 coal-fired power stations. It will satisfy 3% of China’s entire electricity demand.
In 2003, the first commercial power station to use tidal(潮汐的)currents in the open sea opened in Norway. It is designed like windmill(风车), but others take the form of turbines.
As prices fall, wind power has become the fastest growing type of electricity generation— quadrupling(翻两番)worldwide between 1999 and 2005. Modern wind farms consist of turbines that generate electricity. Though it will be more expensive, there is more than enough wind to provide the world’s entire energy needs. Wind farms come in onshore and offshore forms. They can often end up at spots of natural beauty, and are often unpopular with residents. And turbines are not totally harmless—they can interfere with radar, alter climate and kill sea birds. Scotland is building Europe’s largest wind farm, which will power 200, 000 homes. The U. K. ’s goal is to generate one-fifth of power from renewable sources, mainly wind, by 2020. But this may cause problems, because wind is unreliable.
China’s Three Gorges Dam______.
选项
A、is the first hydroelectric dam in the world
B、is of the same size as the U. S. ’s Hoover Dam
C、can generate around 3% of world electricity
D、is the largest hydroelectric dam in the world
答案
D
解析
这道题的答案非常明确,在第二段第二句话“China’s Three Gorges Dam is the largestever”。这里ever表示直至目前世界上所建的水库中,三峡水库是最大的。
转载请注明原文地址:https://kaotiyun.com/show/4JQd777K
本试题收录于:
职称英语理工类C级题库职称英语分类
0
职称英语理工类C级
职称英语
相关试题推荐
HealthyFoodStreetsellers,particularlyindevelopingcountries,supplylargeamountsoffood(51)peopleonlowincomes.Thi
From1994to1998thenumberofAmericanswhohaddonatedakidneyreached244.NoonesellsorgansintheU.S.sinceitisill
Peoplearoundtheglobehittheheightoftheirmiseryanddepressionin(51)age,anewinternationalstudysuggests.The
Solvingaproblemcanbebrokendownintoseveralsteps.First,theproblemmustbeidentifiedcorrectly.Psychologistsreferto
StomachUlcerStomachulcersarethecauseofseverepainformanypeople.Doctorshavebeenabletohelplessenthepainof
Didyoudothattoirritateher?
MiddleAge:ALowPointforMostPeoplearoundtheglobehittheheightoftheirmiseryanddepressioninmiddle【51】______,
AAttractionsofTravellingBLanguageProblemWhenEatingOutCRevolutionCausedbyJetsDHowTravellers’ConcernsAreMe
GeologyandHealthTheimportanceofparticularmetalsinthehumandiethasbeenrealisedwithinthepastfewdecades,and
Don’tirritateher,she’sonashortfusetoday.
随机试题
A.Histaskistoensurethefairuseandstorageofpersonalinformationheldincomputer.B.Andthatlatertheyagreeduponc
A.前壁心肌梗B.前侧壁心肌梗C.高侧壁心肌梗死D.内膜下心肌梗E.下壁心肌梗死房室传导阻滞时多见于
A、蝉蜕B、防风C、天南星D、白僵蚕E、蜈蚣既止痉,又通络止痛的药物是()
房室传导阻滞患者禁用或慎用的药是
有限责任公司与股份有限公司相比较,其主要特征是()。
业主大会作出()的决定,必须经专有部分占建筑物总面积1/2以上的业主且占总人数1/2以上的业主同意。
关于求助者的重要问题,以下描述哪些是正确的?()
案例:本学期,李老师承担初二年级的教学任务。李老师在进行“表格数据的图形化”这节课时,她首先提出一个情境:“中国网民有多少?其中有网瘾的又有多少?占的百分比是多少?网络给我们学习和生活带来了很大的便利,如果我们不能正确使用它,就会受到影响。”很多同学都微
如果你负责组织单位新闻发布会,发布官因故迟到一小时,你怎么办?
在现场勘验或者搜查中发现可用以证明犯罪嫌疑人有罪或者无罪的各种物证、书证需要扣押的,由()决定。
最新回复
(
0
)