首页
登录
职称英语
[originaltext] An often overlooked renewable energy resource is the power of
[originaltext] An often overlooked renewable energy resource is the power of
游客
2023-08-24
52
管理
问题
An often overlooked renewable energy resource is the power of ocean waves. The relentless line of waves breaking along a coastline represents a steady stream of energy.(16)The problem is that the water in waves actually goes up and down, a motion which is hard to convert into a force pushing only one way, like a flowing river or a blowing wind.
Scientists at the University of California Berkeley designed an underwater device which they say not only solves this problem but has a dual application. "Our device has the advantage that we do not directly convert into electricity.(17)We can decide ourselves if we want to produce fresh water or electricity," Lehmann said. Their carpet-like mechanism, that rises and falls with waves, creates hydraulic pressure, pumping seawater towards the shore. The pressurized water can be used to run turbines(涡轮机), generating electricity. Or it can be pushed through special membranes(薄膜)that extract the salt to create fresh water.
Lehmann said larger versions of the wave carpet could power small coastal communities. "So in general the available resource of wave energy is in the order of 15% of the global energy demand, which is a lot. "
Mechanical engineer Reza Alam said to avoid possible impact on coastal ecosystems,(18)the wave carpet can be deployed in so-called " dead zones" where there is not enough oxygen for marine life to thrive.(19)"Placing a carpet on the seabed in those locations is definitely absolutely safe to the environment," he explained.
Alam said only one-square meter of the wave carpet could supply enough power for two typical American homes, which on a larger scale means that the ocean could cheaply power up entire coastal towns.
16. What is a problem of utilizing ocean waves according to the passage?
17. What is the dual function of the underwater device designed by scientists?
18. Which area should the carpet-like mechanism be deployed?
19. What do we know about the wave carpet?
选项
A、The wave carpet is pretty costly.
B、Properly-installed wave carpet wouldn’t hurt the environment.
C、Current available wave energy can meet 50% of the global energy need.
D、One-square meter of the wave carpet could supply two American communities.
答案
B
解析
短文最后提到,装置只要安装在少氧、海洋生物不活跃的地区,是绝对不会对环境产生影响的。
转载请注明原文地址:https://tihaiku.com/zcyy/2953571.html
相关试题推荐
[originaltext]IntheU.S.today,thecostofhousingisveryhigh.Itisco
[originaltext]IntheU.S.today,thecostofhousingisveryhigh.Itisco
[originaltext]Themostobviousdifferencebetweenradioandtelevisionist
[originaltext]Notlongagoitwasassumedthatthedangersmanwouldmeeti
[originaltext]Notlongagoitwasassumedthatthedangersmanwouldmeeti
[originaltext]M:Howareyournewneighbors?W:Theyseemniceenough,butthey
[originaltext]M:Howareyournewneighbors?W:Theyseemniceenough,butthey
[originaltext]W:Goodafternoon.CanIhelpyou?M:Yesplease.I’mlookingfor
[originaltext]W:Goodafternoon.CanIhelpyou?M:Yesplease.I’mlookingfor
[originaltext]W:MaybeweshouldtakeFrontStreetthismorning.Theradioanno
随机试题
玉雕(jadecarving)是中国最古老的雕刻品种之一。玉石历来被人们当作珍宝,在中国古代,玉被看作是美好品质和君子风范的象征。玉石加工雕琢成为精美的工艺品
[originaltext]M:Susan,Ineedyourhelpthisweekend.W:Whatisit,John?Ano
Mountingevidencehasledastronomerstojustanimprobableconclusion;At
(2018年)增值税一般纳税人登记办法规定,纳税人的年应税销售额超过标准时,应登
EPSP的产生是由于突触后膜提高了对下列哪些离子的通透性A.K+、Cl-,尤其
下列各项,属雌、孕激素协同作用的是()A.乳腺的发育 B.子宫平滑肌对缩
夏普比率、特雷诺比率、詹森α与CAPM模型之间的关系是( )。A.三种指数均以
男性,67岁,慢性肺心病史6年,因呼吸道感染原有症状、体征加重,因睡眠障碍服用镇
社会工作者老林与服务对象小王就求助的问题进行了交流和讨论。老林依据多年服务经验认
下列属于损益类科目的有()。A、制造费用 B、劳务成本 C、所得税费用 D
最新回复
(
0
)