THE BATTERIES ( ) 28 VDC.

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THE BATTERIES ( ) 28 VDC.

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单选题

THE BATTERIES ( ) 28 VDC.

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材料题

. They are putting viruses to work,teaching them to build some of the worlds smallest rechargeable batteries.Viruses and batteries may seem like an unusual pair,but theyre not so strange for engi-neer Angela Beicher,who first came up with the idea. At the Massachusetts Institute ofTechnology(MIT)in Cambridge,she and her collaborators bring together different areas of science in new ways.In the case of the virus-built batteries,the scientists combine what they know about biology,technology and pr

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In order to reduce the chance of detentions ships should routinely verify the following except for ____.

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he Alliance of Auto Manufacturers says,The technology(for zero emissions)isnt here yet;it still needs advancement in driving range to make it more appealing to a wider consumer audience.Auto makers blame it on the batteries．Power runs out on most cars after about 70 miles．However,some cars can now go more than 100 miles on a charge．Batteries are expensive．Carmakers say there is nothing they can do about it.Tim Carmichael of the Clean Air Coalition says,The automakers have not built a vehicle un

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