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
The Solar Decathlon is under way, and teams of students from 14 colleges and universities are building solar-powered homes on th
The Solar Decathlon is under way, and teams of students from 14 colleges and universities are building solar-powered homes on th
admin
2013-01-28
34
问题
The Solar Decathlon is under way, and teams 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 rained 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 run.
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, lake 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 manufacturers involved in the Solar Decathlon and similarly one-sided promotions. By failing to be objective, the pro-solar crowd does consumers a real disservice.
It can be inferred that in promoting solar energy the US government ______.
选项
A、admits its limitation of being expensive
B、rarely mentions its cost to homeowners
C、stands on the side of the majority of consumers
D、remains more objective than the solar equipment manufacturers
答案
B
解析
转载请注明原文地址:https://jikaoti.com/ti/DPqYFFFM
0
考博英语
相关试题推荐
Influenzashouldnotbedismissedasatrivialdisease.Itkillsthousandsofpeopleeveryyearataveryhighcosttotheecono
"Popularan"hasanumberofmeanings,impossibletodefinewithanyprecision,whichrangefromfolkloretojunk.Thepolesare
ThearrivalonourTVscreensof"ViceVersa",thestorywhereapompousfatherchangesplaceswithhisdowntroddenschoolboyso
In1993,amallsecuritycameracapturedashakyimageoftwo10-year-oldboysleadingmuchsmallerboyoutofaLiverpool,Engl
Punditswhowanttosoundjudiciousarefondofwarmingagainstgeneralizing.Eachcountryisdifferent,theysay,andnoonest
Nanotechnology,accordingtoitsfans,willjump-startanewindustrialrevolutionwithmolecular-sizedstructuresascomplexas
Perhapsallcriminalsshouldberequiredtocarrycardswhichread:Fragile;HandlewithCare.Itwillneverso,thesedaystogo
GeneralGeorgeWashingtonandhishungry,raggedtroopscrossedtheDelawareRiverfromPennsylvania,surprisedthegarrisonof
Inadditiontobetteringgroupandindividualperformance,cooperation______thequalityofinterpersonalrelationship.
In1784,fiveyearsbeforehebecamepresidentoftheUnitedStates,GeorgeWashington,52,wasnearlytoothless.Sohehireda
随机试题
某儿科病房于2012年10月3~10日共收治患儿60例,其中新生儿病房15例,有3例发生轮状病毒感染,计算新生儿轮状病毒感染的罹患率为
由花生四烯酸衍生的血管活性介质包括
治疗眩晕痰湿中阻证,应对证加用
患者,男性,45岁,近3个月来排便次数增多,每天3~4次,黏液脓血便,有里急后重感,首选的检查方法是()。
某企业有原值为2500万元的房产,2008年1月1日将其中的30%用于对外投资联营,投资期限10年,每年固定利润分红50万元,不承担投资风险。已知当地政府规定的扣除比例为20%。该企业2008年度应纳房产税()万元。
在当代,法国负责监督宪法实施的机关是()。
有以下程序#include#includestructA{inta;charb[10];doublec;};structAf(structAt);main(){structAa={1001,"ZhangDa",1098.0};a=
Onewaytoovercomeregionalvariationandfacilitatethecommunicationbetweenspeakersofdifferentdialectsistoenforce____
A、Encouragingotherstofollowhiswrong-doingB、Stealingendangeredanimalsfromthezoo.C、Organisingpeopleagainsttheautho
Thereisanewtypeofsmalladvertisementbecomingincreasinglycommoninnewspaperclassifiedcolumns.Itissometimesplaced
最新回复
(
0
)