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Solaren is going to design 200 solar-power satellites．
A．Right
B．Wrong
C．Not mentioned
答案
更多“Solaren is going to design 200 solar-power satellites．A．RightB．WrongC．Not mentioned”相关的问题
第1题
California Gives Green Light to Space Solar Power
Energy 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 Company buy 200 megawatts(兆瓦)of power beamed down from solar-power satellites beginning in 2016．But some major challenges will have to be overcome if the technology is to be used widely．
A start-up company called Solaren is designing the satellites，which it says will use radio waves to beam energy down to a receiving station on Earth．
The attraction of collecting solar power in space is the almost uninterrupted sunshine available in geosynchronous(与地球同步的)orbit．Earth-based solar ceils，by contrast，can only collect sunlight 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 for power of the Earth，it's a tough go，”he says．
Cal Boerman，Solaren's director of energy services，says the company designed its satellites with a view to keeping launch costs down．“We knew we had to come up with a different，revolutionary design，” he says．A patent the company has won describes ways to reduce the system's weight，including using inflatable mirrors to focus sunlight on solar cells，so a smaller number can collect the same amount of energy．
But using mirrors introduces other challenges，including keeping the solar cells from overheating，says Schwartz．“You have to take care of heat dissipation(散发)because you're now concentrating a lot of energy in one place，”he says．According to the company's patent，Solaren's solar cells will be connected to radiators to help keep them cool．
Though Boerman says the company believes it can make space-based solar power work，it is not expecting to crowd out other forms of renewable energy．Laws in California and other states require increasing use of renewable energy in coming years，he points out．“To meet those needs，we're going to need all types of renewable energy sources，”he says．
Solar-power satellites will use radio waves to beam energy down from space．
A．Right
B．Wrong
C．Not mentioned
第2题
Where are they going？
A．They are going to the cinema.
B．They are going to a concert.
C．They are going to a party.
第3题
Where is the man going？
A．He is going home.
B．He is going to school.
C．He is going to his office.
第4题
A．She is going to study.
B．She is going to teach.
C．She is going to travel.
D．She is going to visit friends.
第5题
A．He's going to attend a meeting.
B．He's going to solve a problem.
C．He's going to write a report.
D．He's going to help the woman.
第6题
Where is the man going？
A．He's going to a post office.
B．He's going to school.
C．He's going home.
第7题
What are they going to do？
A．They are going to have lunch together.
B．They are going to discuss a problem together.
C．They are going to the cinema together.
第8题
A．She's going to New York.
B．She's going to Chicago.
C．She's going to Washington.
D．She's going to San Francisco.
第10题
A．It's going to attract a lot of students.
B．It's going to be a lot of fun.
C．It's going to require a lot of reading.
D．It's going to work out quite well.
