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
The exploitation of the power in the Sun’s rays is a form of alternative energy now showing new commercial promise. In the
The exploitation of the power in the Sun’s rays is a form of alternative energy now showing new commercial promise. In the
admin
2010-04-24
70
问题
The exploitation of the power in the Sun’s rays is a form of alternative energy now showing new commercial promise.
In the US, manufacturers have made important 【C1】______ in the development of the technology to bring down the cost of solar conversion systems 【C2】______ improving their reliability.
The direct conversion of solar 【C3】______ electrical energy, using photovoltaic cells 【C4】______ distinct advantages as an alternative energy option.
【C5】______ other forms of renewable energy, photovoltaic is based on modular solid state devices which can be mass 【C6】______ at a relatively low cost.
Here wafers of silicon—not dissimilar 【C7】______ ones which are turned into silicon chips— 【C8】______ an electric current when light falls upon them.
When built into panels or modules where each cell interconnects, the amount of electricity generated can be large enough to 【C9】______ a home or even a community.
Over the past 10 years, 【C10】______ extensive research and substantial Government and private industry funding, the price of photovoltaic modules has dropped 【C11】______ .
【C12】______ in 1973-74 the price per peak watt was between US $100 and $150, commercial prices for small array system now vary between $6.50 and $7 per watt.
This rapid price reduction has been accompanied by a 400 per cent jump in the 【C13】______ efficiency of photovoltaic modules.
【C14】______ solar cells are poor converters of sunlight to electricity. Early cells could only manage to mm about five per cent of the incident rays into electricity, but recent development have increased 【C15】______ to more than 10 percent.
【C2】
选项
A、while
B、if
C、of
D、for
答案
A
解析
此处意为“在提高可靠性的同时,降低太阳能转化系统的成本”。
转载请注明原文地址:https://kaotiyun.com/show/T79K777K
0
专业英语四级
相关试题推荐
Businessandgovernmentleadersalsoconsidertheinflationratetobeanimportantgeneralindicator.Inflationisaperiodof
Peoplethinkingabouttheoriginoflanguageforthefirsttimeusuallyarriveattheconclusionthatitdevelopedgradually
Thespeakerlikesteachingbecauseof______.
Thescientistshaveabsolutefreedomastowhatresearchtheythinkitbestto__________.
OxfordUniversityscientistswillexperimentonhundredsofpeopleinahidtounderstandhowthebrainworksduringstatesofc
Indeed,almosteveryscientistnowfindsitimpossibletoreadalltheworksrelevanttohisownsubject,______extensivelyout
Itishardtotrackthebluewhale,theocean’slargestcreature,whichhasalmostbeenkilledoffbycommercialwhalingandis
Theenergygained-fromthesuncanthenbeusedduringthenighttoenablethenecessarychemicalreactionsto______inhisbod
FromachildIwasfondofreading,andallthelittlemoneythatcameintomyhandswaseverlaidoutinbooks.Pleasedwithth
FromachildIwasfondofreading,andallthelittlemoneythatcameintomyhandswaseverlaidoutinbooks.Pleasedwithth
随机试题
山梨醇羟苯乙酯
苯海索治疗帕金森病的机制是
银行贷款筹资是公司收购较常采用的一种筹资方式。但是,向银行申请贷款一般有比较严格的审批手续,对贷款的期限及用途也有一定的限制。( )
下列免征契税的情况有()。
成长动机是一种()。
【2016上】下列不属于发生在法国大革命时期的大事的是()。
根据我国宪法的规定,下列选项中哪些自然资源不能属于集体所有?()
ItmightbeeasiertodosomethingaboutNorthKorea’snucleartruculenceifwecouldmakeheadortailofthecrypticvideosit
Ascientificdiscoveryisoftenmade【C1】______beforesomeoneisabletoputittouse.【C2】______,scientistsdiscoveredhowto
Thegovernmentistobanpaymentstowitnessesbynewspapersseekingtobuyuppeopleinvolvedinprominentcases(1)______thet
最新回复
(
0
)