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
30
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://jikaoti.com/ti/jn6sFFFM
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
AMakingfriendswithnewacquaintancesBCloselinkbetweencompanionshipandbelongingnessCHowtosatisfyotherpeople’s
Streetsellersparticularlyindevelopingcountries,supplylargeamountsoffood【H1】peopleonlowincomes.Thissectoralsoemp
FoodSafetyandFoodborneIllnessesFoodsafetyisanincreasinglyimportantpublichealthissue.Governmentsalloverthew
Thefarmersalsowanttousethewatertoirrigatethe(barren)land.
WhatIstheCoolestGasintheUniverse?WhatisthecoldestairtemperatureeverrecordedontheEarth?Wherewasthislow
ReinventingtheTableAnearthscientisthasrejiggedtheperiodictabletomakechemistrysimplertoteachtostudents.(46)But
Myfatherisaphysician.
Don’tirritateher,shehatestobedisturbedwhensleeping.
ThispoemdepictsthebeautifulsceneryofasmalltownintheSouth.
随机试题
某公司员工都具有理财观念。有些购买基金的员工买了股票,凡是购买地方债券的员工都买了国债,但所有购买股票的员工都不买国债。根据以上前提。以下哪选项一定为真?
甲公司适用的所得税税率为25%,2015年度按照税法规定计算的应交所得税为1000万元。期末,通过比较资产、负债的账面价值与其计税基础,确定应纳税暂时性差异为600万元,可抵扣暂时性差异400万元,上述暂时性差异均与直接计入所有者权益的交易或事项无关。甲公
在下列经济指标中,不仅能够有效评价不同企业的成本水平,而且能综合反映企业全部产品成本水平及其节约、超支程度的指标是()
属于鉴证业务关系人的有()。
可寄生于猫体内的线虫是
对于尿糖检测阳性可能会是
中国公民王林就职于国内某会计师事务所,本年除薪金收入外,其他收入情况如下:(1)1月将新购1套公寓住房出租,租期半年,收取租金3000元。7月将该套公寓以市场价出售,扣除购房成本及相关交易税费后所得50000元。(2)为某报社财经专栏撰稿,稿件以连载形
在()中,任何人都不可能通过对公开或内幕信息的分析来获取超额收益。
作为我国行政事业单位国有资产管理的重要法规文件,()的颁布,标志着我国行政事业单位国有资产管理工作迈上了新的台阶。
小张夫妇因夫妻关系紧张向社会工作者小李求助。小李与他们面谈后发现,小张夫妇因工作早出晚归,孩子放学后没人管,两人经常指责对方不负责任。因此,小李向他们建议,孩子放学后可以到社区的青少年中心接受托管服务。根据上述内容,小李除了扮演服务提供者的角色外,还扮演了
最新回复
(
0
)