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 provides around 40% of the world’s energy needs, mosdy fuelling automobiles. Coal i
Renewable Energy Sources Today petroleum provides around 40% of the world’s energy needs, mosdy fuelling automobiles. Coal i
admin
2015-07-17
120
问题
Renewable Energy Sources
Today petroleum provides around 40% of the world’s energy needs, mosdy 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. Natural gas reserves could plug 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. We could fast reach an energy crisis. We need to rapidly develop sustainable solutions to fuel our future. Less-polluting renewable energy sources offer a more practical long-term energy solution. They may benefit the world’s poor too. " Renewable" refers to the fact that these resources are not used faster than they can be replaced.
The Chinese and Romans used watermills over 2,000 years ago. But the first hydroelectric dam was built in England in 1870. Hydroelectric power is now the most common form of renewable energy,supplying around 20% of world electricity. China’s Three Gorges Dam,which has just been completed, is the largest ever. At five times the size of the US’s Hoover Dam, its 26 turbines will generate the equivalent energy of 18 coal-fired power stations. It will satisfy 3% of China’s entire electricity demand. Surprisingly, some argue that hydroelectric dams significandy contribute greenhouse gases.
In 2003 , the first commercial power station to harness tidal currents in the open sea opened in Norway. It is designed like windmill,but others take the form of turbines.
As prices fall, wind power has become the fastest growing type of electricity generation— quadrupling 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 benign—they can interfere with radar and leave a significant ecological footprint, altering climate and killing sea birds. Migrating birds may have more luck avoiding them. Scotland is building Europe’s largest wind farm, which will power 200,000 homes. The UK’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.
Which is the country with the first commercial power station that makes use of ocean currents produced by tides?
选项
A、China.
B、Norway.
C、England.
D、America.
答案
B
解析
文章第三段说2003年挪威首次运营利用潮汐进行发电的商业电站。所以,B是正确选项。
转载请注明原文地址:https://kaotiyun.com/show/lnGd777K
本试题收录于:
职称英语理工类A级题库职称英语分类
0
职称英语理工类A级
职称英语
相关试题推荐
LanguageLearningItis,everyoneagrees,ahugetaskthatthechildperformswhenhelearnstospeak,andthefactthathedoes
Thedentisthasdecidedtoextractherbadtooth.
In1861itseemedinevitablethattheSouthernstateswouldbreakawayfromtheUnion.
Overthirtycitiesaroundtheworldboastmorethanfivemillionresidents.
CollegeSportsintheUSCollegesportsintheUnitedStatesareahugedeal.AlmostallmajorAmericanuniversitieshavef
FoodandHealthThefoodyoueatdoesmorethanprovideenergy.Itcanhaveadramaticeffectonyourbody’sabilitytofig
EnglishandEnglishCommunityThereisnodenyingthatEnglishisausefullanguage.ThepeoplewhospeakEnglishtodaymake
Ididn’thelphim.Iwouldhavehoweverdidn’thavethemoney.
Herlifeisbecomingmorediverse.
随机试题
女性,38岁,低热、腹泻3个月,大便5~8次/日,呈糊状,不含黏液或脓血。近2日脐周隐痛。查体:下腹可触及一4cm×4cm大小的包块,中等质地,轻度压痛,肠鸣音亢进。化验:血沉70mm/h,PPD皮试硬结直径是15mm,结合肠镜所见诊断为肠结核。
外资银行进入新兴市场国家,新兴市场国家银行业的各主体为了维持自身的生存,会尽可能争取较大的市场份额,充分拓展自身竞争优势,努力向客户提供质优价廉的金融产品和金融服务。这个过程必然带动银行业微观效率的提升。“这个过程”指的是(
龙腾、华夏公司因担保合同发生争议,争议数额为100万元人民币。现依据担保合同的仲裁条款申请仲裁,本案仲裁庭应如何组成?
下列泡沫灭火系统检查不属于系统月检的是()。
商业银行利用理财顾问服务向客户推介投资产品时应了解客户的风险承受能力,替客户选择合适的投资产品。()
以下()不属于资本监管的新三大支柱。
在传统的按年龄编班的班级内,按学生的能力或学习成绩编组的方式是()。
作为调节社会经济运行的一种重要经济杠杆,提高税率通常将()。
1957年10月,()把世界第一颗人造卫星送上太空,标志着航天技术的诞生,揭开了太空技术的序幕。
感知能力发展的干预和训练的关键时期是()
最新回复
(
0
)