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职称英语考试理工类A级阅读判断题

11月22日 编辑 fanwen51.com

[英语面试须知]英语面试有哪些须知是求职者所不知道的呢?一起来看看。 1. What isimportant to you in a job? 这个工作对你最重要的是什么? Challenge, the feeling of acplishment, and k...+阅读

职称英语考试理工类A级阅读判断题California Gives Green Light to Space Solar PowerEnergy beamed down from space is one step closer to reality,now that California has given the green light to an agreement that would see the Pacific Gas and Electric pany buy 200 megawatt (兆瓦)of power beamed down from solar-power satellites beginning in 2016.But some major chal lenges will he to be overed if the technology is to be used widely.A start-up pany called Solaren is designing the satellites,which it says will use radio wes to beam energy down to a receiving station on Earth.The attraction of collecting solar power in space is the almost uninterrupted sunshine ailable in eosynchronous(与地球同步的)orbit.Earth-based solar cells,by contrast,can only collect sun.Light during daytime and when skies are clear.But space-based solar power must grapple(努力克服)with the high cost per kilogram of launching things into space,says Richard Schwartz of Purdue University in West Lafayette,Indiana, If you're talking about it being economically viable or power of the Earth,it's a tough go.he says.Cal Boerman,Solaren's director of energy services,says the pany designed its satellites with a view to keeping launch costs down.We knew we had to e up with a different,revolu-tionary design,he says.A patent the pany has won describes ways to reduce the system'Sweight,including using inflatable minors to focus sunlight on solar cells,so a smaller number cancollect the same amount of energy.But using minors introduces other chaHenges,including keeping the solar cells from overhea-ting,says Schwartz.You he to take care of heat dissipation(散发)because you're now concen-trating a lot of energy in one place,he says.According to the pany's patent,Solaren's solarcells will be connected to radiators to help keep them cool.Though Boerman says the pany believes it can make space-based solar power work,it is notexpecting to crowd out other forms of renewable energy.Laws in California and other states requireincreasing use of renewable energy in ing years,he points out.To meet those needs,we're go-ing to need all types of renewable energy sources,he says.16.Solar-power satellites will use radio wes to beam energy down from space.A.RightB.WrongC.Not mentioned17.Solaren is going to design 200 solar-power satellites.A.RightB.WrongC.Not mentioned

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