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
9
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] The Solar Decathlon is most probably the name of a ______.
选项
A、technology
B、contest
C、strategy
D、machine
答案
B
解析
本题问Solar Decathlon最有可能是什么的名字。由judges will evaluate these homes and declare one the winner可以推断Solar Decathlon最有可能是一项比赛。所以正确答案是B。
转载请注明原文地址:https://tihaiku.com/zcyy/4069730.html
相关试题推荐
TheSolarDecathlonisunderway,andtramsofstudentsfrom14collegesand
TheSolarDecathlonisunderway,andtramsofstudentsfrom14collegesand
(66)Applicationfilesarepiledhighlythismonthincollegesacrossthecoun
(66)Applicationfilesarepiledhighlythismonthincollegesacrossthecoun
(66)Applicationfilesarepiledhighlythismonthincollegesacrossthecoun
(66)Applicationfilesarepiledhighlythismonthincollegesacrossthecoun
(66)Applicationfilesarepiledhighlythismonthincollegesacrossthecoun
(66)Applicationfilesarepiledhighlythismonthincollegesacrossthecoun
(66)Applicationfilesarepiledhighlythismonthincollegesacrossthecoun
Manystudentsfind______jobsduringtheirsummerholidays.A、contemptibleB、tem
随机试题
下列有关综述中应用参考文献的基本原则包括A.参考文献应该为30篇以上 B.必须
音程有和声音程和旋律音程之分。音数为1的二度音程,叫做大二度音程。音数为5的音程
附着式轮廓标用合成树脂类材料做支架或底板时,其抗弯强度应不低于()。A.30M
患者,男,65岁。皮肤、巩膜黄染进行性加重,大便持续变白,病后消瘦明显。应首先考
药师为患者提供胰岛素储存的用药咨询,不包括A.应保存在2~8℃的冰箱中,未开启的
变电运维管理中,熄灯巡视每月不少于()次1$;$2$;$3$;$4
女性,26岁,妊娠30周。3天来腰痛伴尿频、尿痛。两天来发热,体温最高达38.6
某国的货币量发行情况如下:现金货币5000亿元,活期存款500亿元,活期存款以
给水系统分区设置水箱和水泵,水泵分散布置,总管线较短,投资较省,能量消耗较小,
承包工程的结算双方实行()结算方式的,当年结算的工程款应与分年度的工作量一致
最新回复
(
0
)