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
2016-07-17
52
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.
One of the problems with wind farms is that______.
选项
A、there is not enough wind
B、wind is not reliable
C、they can only be built on the sea
D、they might influence the world economy
答案
B
解析
文章最后一句话指出英国到2020年五分之一的电力来自风力发电的目标会产生问题,因为风是不稳定、不可靠的(unreliable),本题正确答案为B。
转载请注明原文地址:https://kaotiyun.com/show/OxQd777K
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
Inmostsectorsoftheeconomy,itisthesellerwhoattemptstoattractapotentialbuyerwithvariousinducementsofprice,qu
Itisreportedthatonlyapartofpeopleexperienceintheirlife.Whenahormonalreleaseistriggered,itwillreducethepr
Itisreportedthatonlyapartofpeopleexperienceintheirlife.Paraplegicsandtetrap1egicsarepeoplewhomosteasilyexp
Painissomethingthateveryoneexperiencesatsometime,toagreateroflesserdegree(在或大或小的程度)Chronicorlong-termpain,how
1.Cancerisadiseaseinwhichcellsmultiplywithoutcontrol,destroyhealthytissue,andendangerlife.About100kindsofca
Peoplearoundtheglobehittheheightoftheirmiseryanddepressionin(51)age,anewinternationalstudysuggests.The
Mothersandmatchmakers(媒人)havealwaysknownthatnotbeingmarriedisadefinitehealthhazard.Butwhenateamofresearchers
HitchhikingWhenIwasinmyteens(十几岁)and20s,hitchhikingwasamainformoflong-distancetransport.Thekindnessorcu
TooPoliteforWordsAJapanesecolleaguetheotherdaywastalkingaboutameetingwithamanwhomsheabruptlydescribedu
Itisnotpossibleforpeopletoremembereverthingthattheyhavethought.
随机试题
城乡贫困户救助
EnglishandEnglishCommunityThereisnodenyingthatEnglishisausefullanguage.ThepeoplewhospeakEnglishtodaymake
输卵管内侧端连于_______,其开口称_______;外侧端以_______开口于腹膜腔。
股骨骨折后因处理不当,大量脂肪滴进入血液,该脂肪栓子常栓塞于
临床上用于治疗雄性极速圆形脱发的是()。
板式塔的压强降比浮阀塔及固定舌形塔都低,操作弹性范围( )。
甲公司为增值税一般纳税人,主要从事货物运输服务,2014年8月有关经济业务如下:(1)购进办公用小轿车1部,取得增值税专用发票上注明的税额为25500元;购进货车用柴油,取得增值税专用发票上注明的税额为51000元。(2)购进办公室装修
学生的实际发展水平与在成人的指导下可能达到的水平之间的差距,维果茨基称之为()。
在中国共产党的历史上,对毛泽东思想作出系统概括和阐述的党的文献有()。
Theinterview—about3minutesInthisparttheinterlocutorasksquestionstoeachofthecandidatesinturn.Youhavetogivei
最新回复
(
0
)