首页
登录
职称英语
The Solar Decathlon is under way, and trams of students from 14 colleges and
The Solar Decathlon is under way, and trams of students from 14 colleges and
游客
2025-05-10
17
管理
问题
The Solar Decathlon is under way, and trams of students from 14 colleges and universities are building solar-powered homes on the National Mall in Washington, D.C. in an effort to promote this alternative energy source. This week judges in this Department of Energy (DOE) sponsored event will evaluate these homes and declare one the winner. Unfortunately, for the participants, it mined on the Sept 26th opening ceremonies, and the skies over the Washington have remained mostly overcast since. However, the conditions may have made for a more revealing demonstration of solar energy than was originally planned.
Although the Solar Decathlon’s purpose is to advertise the benefits of electricity-generating solar panels and other residential solar gadgets, the bad weather has made it hard to ignore the limitations. As fate so amply demonstrated, not every day is a sunny day, and indeed DOE’s "Solar Village on the National Mall" has received very little of what it needs to nm.
Since solar is not an always available energy source, even a community consisting entirely of solar homes and businesses would still need to be connected to a constantly-running power plant (most likely natural gas or coal fired) to provide reliable electricity. For this reason, the fossil fuel savings and environmental benefits of solar are considerably smaller than many proponents suggest.
Washington, D.C. gets its share of sunny days as well, but even so, solar equipment provides only a modest amount of energy in relation to its cost. In fact, a $5,000 rooftop photovoltaic system typically generates no more than $100 of electricity per year, providing a rate of return comparable to a passbook savings account.
Nor do the costs end when the system is installed. Like anything exposed to the elements, solar equipment is subject to wear and storm damage, and may need ongoing maintenance and repairs. In addition, the materials that turn sunlight into electricity degrade over time. Thus, solar panels will eventually need to be replaced, most likely before the investment has fully paid itself off in the form of reduced utility bills.
Solar energy has always had its share of true believers willing to pay extra to feel good about their homes and themselves. But for homeowners who view it as an investment, it is not a good one. The economic realities are rarely acknowledged by the government officials and solar equipment manufactures involved in the Solar Decathlon and similarly one-sided promotions. By failing to be objective, the pro-solar crowd does consumers a real disservice. [br] What does the author say about the weather?
选项
A、It is rare for Washington,D.C. to have such long rainy days.
B、It has been mining since Sept 26th for the most of the time.
C、It is favorable to the manufacturers to promote solar equipment.
D、It has helped see the disadvantages of solar energy.
答案
D
解析
由the conditions may have made for a more revealing demonstration of solar energy than was originally planned可知这种天气可能会使太阳能的利用比所预计的更暴露一些缺点。所以D(有助于看到太阳能的弊端)是正确答案。
转载请注明原文地址:https://tihaiku.com/zcyy/4069731.html
相关试题推荐
TheSolarDecathlonisunderway,andtramsofstudentsfrom14collegesand
TheSolarDecathlonisunderway,andtramsofstudentsfrom14collegesand
TheSolarDecathlonisunderway,andtramsofstudentsfrom14collegesand
(66)Applicationfilesarepiledhighlythismonthincollegesacrossthecoun
(66)Applicationfilesarepiledhighlythismonthincollegesacrossthecoun
(66)Applicationfilesarepiledhighlythismonthincollegesacrossthecoun
(66)Applicationfilesarepiledhighlythismonthincollegesacrossthecoun
(66)Applicationfilesarepiledhighlythismonthincollegesacrossthecoun
(66)Applicationfilesarepiledhighlythismonthincollegesacrossthecoun
Ourstudents’educationalachievementsequal,andinmanycases______,thoseof
随机试题
Tounderstandthemarketingconcept,itisonlynecessarytounderstandthe
[originaltext]W:Hi,John!M:Oh.Hi,Laura.What’reyoudoinghere?W:Uh...I
混凝土电通量试验中,对试件施加60V直流恒电压,并开始记录电流值,直至通电(
除了截面形式和尺寸外其他均相同的单筋矩形截面和T型截面,当截面等高度及单筋矩形截
关于信用卡业务对我国银行业的意义,下列说法错误的是( )。A.提高盈利能力和竞
肺癌早期诊断简单有效的检查方法是A.X线检查 B.痰脱落癌细胞检查 C.纤维
根据以下资料,回答111~115题。 2006年全国共有生产力促进中心
在个人汽车贷款贷前调查中,当借款人的居住地址与户口薄记录地址一致时,必须提供居住
A.个人史 B.既往史 C.现病史 D.家族史 E.月经史及婚育史全身健
商业银行证券投资的工具包括()。A.政府债券 B.金融债券 C.普通股股票
最新回复
(
0
)