Wind turbines are efficient sources of cheap energy but also a source of concern as their huge spinning blades (叶片) frequently kill birds and bats. A new type of wind generator developed in Spain offers a creative solution to that problem.In 2002, Spanish inventor David Yanez saw a short ...
B. Wind turbines are efficient sources of cheap energy.C. A new generator will come onto the market by 2017.D. Yanez has made a generator for the benefit of people. 相关知识点: 试题来源: 解析 62.B.细节题.根据文章内容,In 2002, Spanish inventor David Yanez saw a short film about the ...
More cheap wind turbines are key to power strategy, says HuhneMICHAEL SETTLE
inJapanandChile.AnditwasinChileshediscoveredshecould getlast-minutecheap dealson shipsgoingto Antarcticafrom theislandsoff TierradelFuego,thesouthernmosttip ofthe SouthAmericanmainland.“IjustdecidedIwantedtogo,”shesays.“IhadnoideaaboutwhatI?d findthereandIwasn?tnervous.Ijustwantedto doit.AndIwantedto...
请认真阅读下列短文.从短文后各题所给的A.B.C.D四个选项中.选出最佳选项.并在答题卡上将该项涂黑.Wind turbines are efficient sources of cheap energy but also a source of concern as their huge spinning blades frequently kill birds and bats. A new type of wind g
二接第5板136 big wind turbines (凤力 轮 ) are in the dry placcs of New Moxico. The 210-foot C. cost a lot of money turbines are on wind farms. These wind farms D. give people cheap electricity can bring clean energv(能 ) to many towns and( )42. Bothwell's company2to kee...
Here’s the problem: Solar panels and wind turbines are cheap, clean, reliable sources of electricity, right up until they’re not. The sun sets; the wind flags. They can’t power an electricity grid alone. Coal and natural-gas plants can fill in the gaps today. But as ...
The shad‐ owing phenomenon comes from installing too many wind turbines in a limited area to save costs on land use. Moreover, the short distance between wind farms compromises the indi‐ vidual performance of each farm. The vast use of public financial support policies may have led to fast...
I think that a lot of the protesters assume that wind turbines will save the day, or we can just import oil from Brazil. If it were that easy, we would have found solutions long ago. still-wind on February 23, 2011 - 2:23pm Permalink | Parent | Comments top Gail: If I may ...
3. Wind Farm The wind farm utilizeswind turbines that range from 1 to 7 megawatts. The design of the generator makes use of a wound rotor asynchronous generator model. This model obtains its excitation from the grid by means of AC/DC to DC/AC converters. This is for the reasonth...