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, mostly fuelling automobiles. Coal is
Renewable Energy Sources Today petroleum provides around 40% of the world’s energy needs, mostly fuelling automobiles. Coal is
admin
2012-12-03
52
问题
Renewable Energy Sources
Today petroleum provides around 40% of the world’s energy needs, mostly fuelling automobiles. Coal is still used, mostly in pover 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.
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.
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 lilling sea birds. Migrating birds may have more luck avoiding them. Scotland is building europe’s largest wind farm, which wil power 200,000 homes. The UK’s goal is to generate onefifth of power from renewable sources, mainly wind, by 2020. But this may cause problems, because wind is unreliable.
According to the passage,resources like wind are
选项
A、renewable.
B、recyclable.
C、damaging.
D、scarce.
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/IYQd777K
本试题收录于:
职称英语理工类B级题库职称英语分类
0
职称英语理工类B级
职称英语
相关试题推荐
TryingtoFindaPartherOneofthemoststrikingfindingsofarecentpollintheUKisthatofthepeopleinterviewed,on
ThenumberofUnitedStatescitizenswhoareeligibletovotecontinuestoincrease.
(46)Yet,afterwrappingaflexiblecuffaroundyourarmandpumpingitup,yourdoctorfrownsandgivesyouthebadnews:youar
1.Ahospitalisaninstitutionthatprovidesmedicalservicesforacommunity.Thedoctors,nurses,andotherpersonnelofaho
ActiveinOldAgeKeepsPeopleMobilePeopleover70whoaren’tactivearemorelikelytodevelopproblemswalkingorclimbin
Single-parentKidsDoBestSinglemumsarebetteratraisingtheirkidsthantwoparents—atleastinthebirdworld.Mother
MigrantWorkersInthepasttwentyyears,therehasbeenanincreasingtendencyforworkerstomovefromonecountrytoanot
EveryDogHasItsSayKimikoFukuda,aJapanesegirl,alwayswonderedwhatherdogwastryingtosay.Wheneversheputonmake
Themanagergotangryjustbecausehissecretarywastenminuteslate.
AWondersMadebyOurSickbutCharmingLittleGirlBHelpingaDoctortoSucceedCHeartsSaddenedbyaRareDisorderofOur
随机试题
英语动词“唱”的原形是sing,过去时形式是sang,这在语法手段的词形变化中叫作()
丛菊两开他日泪,_________。(杜甫《秋兴八首》<其一>)
虚劳患者,口干唇燥,不思饮食,大便燥结,甚则干呕,呃逆,面色潮红,舌红干少苔,脉细数。其证候是
下列根除幽门螺杆菌的方案中首选的是()
我国投资宏观调控的对象不包括()。
当社会总供给大于社会总需求时,为实施宏观调控选择的财政政策工具包括()。
谦虚使人进步。骄傲使人落后,但是现在有些人却说“骄傲”使人进步,“谦虚”使人落后,谈谈你的想法。
权力机关对行政机关的监督不包括()。
[*]
I’mafraidthat’sit______(实际上,这场比赛我们已经输了).
最新回复
(
0
)