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
Doug Morrell had already installed solar panels on his house in Coopersville, Mich. , but he was eager to get a little bit green
Doug Morrell had already installed solar panels on his house in Coopersville, Mich. , but he was eager to get a little bit green
admin
2013-07-02
51
问题
Doug Morrell had already installed solar panels on his house in Coopersville, Mich. , but he was eager to get a little bit greener. So the 52-year-old Navy veteran bought something that might seem more at home in the Dutch countryside than in a small town in western Michigan: a personal wind turbine(涡轮机). Turbines like Morrell’s convert the energy of the wind to electricity, while old windmills are geared for mechanical power, like pulling water from a well.
On days with decent wind — which occur frequently enough, since he can feel the breeze from Lake Michigan — the $ 16,000 Swift wind turbine can generate 1.5 kilowatts(kW)an hour, i. e., enough to power the average lightbulb for 15 hours. Together with his solar array, that’s enough to take care of much of his electricity bill.
Thanks in part to a new tax credit put into place by Congress in October, owning your own wind turbine could be the next green trend. While it’s true that wind power has taken off in the U. S. — adding more in new capacity to the electrical grid last year than any other power source — most of that increase comes from utility wind farms, vast fields of turbines more than 300 ft.(90 m)tall. For homeowners seeking renewable-energy sources, however, better-known solar power has always dominated. Home solar power currently generates 12 times as much energy as small wind power, which is defined as turbines that have a capacity of 100 kW or less(though most household turbines will produce 10 kW at most). That’s partly because residential wind turbines require space and sky — at least half an acre of open land — to get access to consistent winds. Still, according to the American Wind Energy Association(AWEA), some 15 million homes in the U. S. fit that definition, and small turbines, unlike large wind farms, can be productive in weaker breezes, which puts more of the country into play, though the best areas are still windy spots like the Midwest or West Texas.
What’s really held back residential wind power has been the lack of federal subsidies, which have fed the growth of other renewables like solar and large-scale wind.
But when Congress passed the bailout(紧急援助)bill this fall, it added a 30% tax credit for small-wind projects, which Stimmel believes will enable the industry to grow 40% next year, even in a down market.
In other words, small wind may not be small potatoes for much longer. And that could be a boost for domestic green businesses as well; U. S. firms control 98% of the small-wind market, in contrast to large-scale wind and solar, in which foreign manufacturers dominate. " Since the tax credit, our phone has been ringing off the hook," says Andy Kruse, a co-founder of Southwest Windpower, a major small-scale-turbine producer in Flagstaff, Ariz. "It’s really exciting to see the market coming to us. "
We learn from Para. 1 that MorreU’s wind turbine______.
选项
A、mainly converts the energy of wind to mechanical power
B、has to work under the condition of wind weather
C、can generate more electricity than his solar array
D、makes MorreU’s meter run backward instead of forward
答案
B
解析
事实细节题。第一段中间部分提到在风力还不错的日子里莫雷尔家这台16,000美元的斯威夫特风力涡轮机可以每小时发电1.5千瓦,能把风能转换成电能,故[B]项正确。老式的风车将风能转化为机械能,不是涡轮机,故[A]项错误。第一段没有提到莫雷尔的涡轮机比他的太阳能电池阵产更多的电能, 故[C]项错误。原文说莫雷尔的涡轮机连同他的太阳能电池阵就差不多足够取代他的电费了,可知是两项加在一起才能生产足够的电能,仅由涡轮机提供的电能不足以使电表倒转,故[D]项错误。
转载请注明原文地址:https://kaotiyun.com/show/lcn7777K
0
大学英语六级
相关试题推荐
ClimateChangeScientistspredictincreasingdroughts,floodsandextremeweatherandsaythereisgrowingevidencethathu
HostilitytoGypsieshasexistedalmostfromthetimetheyfirstappearedinEuropeinthe14thcentury.TheoriginsoftheGyps
Beforethemidnineteenthcentury,peopleintheUnitedStatesatemostfoodsonlyinseason.Drying,smoking,andsaltingcould
A、Commoncausesofanger.B、Judgingpeople’sbehavior.C、Changingpeople’sattitudes.D、Theeffectsofnegativebehavior.B开头对话中
Mountainclimbingisbecomingapopularsport,butitisalsoa【B1】_____dangerousone.Peoplecanfall;theymayalsobecomeil
Ifyouseeafishtailsplashinashallowstream,you’llknowthatatroutisfeedingonunderwaterinsectsthatclingtother
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcenturyandthediffusionofprintinginthe15thand1
A、Plantscanproducesomepoisonouschemicalfordefenceagainstinsects.B、Insectshavebeeneatingplantsformanymillionyea
EversincethemodemOlympicGamesbeganin1896,they’vehadtheircritics.Everyformof【B1】______activityinvitestrouble.Bu
随机试题
气焊某些合金时,如果生成的难熔氧化物浮在熔池表面,将给焊接带来很大的困难。
用于产妇会阴切口感染局部湿敷的溶液是【】
CT计算机中的核心部件是
女,50岁,G3P2,8年前行节育术,月经不规则1年,阴道不规则流血15天,查体:心率62/分,血压100/65mmHg,结膜苍白,子宫略大,稍软,无压痛,宫旁未触及异常,为确定诊断,应首选的检查是()
下列各项,与哮喘发病密切相关的是
按照《建设工程质量管理条例》规定,建设工程发生质量事故,有关单位应当在()小时内向当地建设行政主管部门和其他有关部门报告。
2011年7月,王某夫妇与G旅行社签订了旅游合同。合同约定,王某夫妇参加G旅行社组团到桂林的旅游,时间是7月15日到20日,总费用4200元。合同对旅游行程安排、食宿标准、交通工具等都做了具体的约定。7月18日,在按照约定游览漓江时,因地接社委派的导游员刘
过去办公司从事生产经营活动,既要取得工商管理部门的经营许可证,又要申办营业执照。近年来我国政府逐步扩大“证照分离”改革,除涉及重大公共利益外,企业只要领取营业执照,就可以直接开展相关经营活动,这使得企业办事更加便捷高效。这一改革旨在()。①减少政
∫x2dx=x3。()
人才是强国的根本,人才资源是第一资源。什么是人才,可谓____________,人才应该具备的基本素质倒是____________的,许多领导、学者认为,引领未来社会发展的,也是社会最缺乏的人才必须具备三大条件:品格高尚、才干出色、作风务实。填入
最新回复
(
0
)