首页
登录
职称英语
Constant variations in the amount of sunlight available on Earth at any give
Constant variations in the amount of sunlight available on Earth at any give
游客
2024-01-10
39
管理
问题
Constant variations in the amount of sunlight available on Earth at any given location make energy storage a necessary design feature of terrestrial solar-energy systems. For systems transforming solar to thermal energy, the thermal energy may be stored in matter as either latent heat or sensible heat. Latent heat is absorbed or released whenever matter changes phase, as when matter changes from liquid to gas, for example, or from gas to liquid. Large heat capacities are associated with certain materials, like salts, but in any substance this storage is available only at the unique fixed temperature at which the particular phase transition occurs in that substance. Moreover, materials that have transitions at the temperatures that terrestrial solar-energy systems are likely to encounter are usually destructively corrosive at those temperatures. The storage of sensible heat, on the other hand, allows flexibility as to temperature, in addition, safe substances like water and most rocks have large sensible heat capacities. [br] According to the passage, solar-energy systems located on Earth must store energy for which of the following reasons?
选项
A、At any given location on Earth, the amount of sunlight available frequently changes.
B、The operation of such systems depends on devices that require a power source other than solar energy
C、Demand for the energy produced by such systems varies in unpredictable ways
答案
A
解析
根据题干,本题正确答案应该同义改写第一句,故选项A正确。B项文中未提及。C项文中未提及。
转载请注明原文地址:https://tihaiku.com/zcyy/3349608.html
相关试题推荐
Zoologistshopetolearnwhetherminorvariationsinthemigrationroutesofcer
Rosario______ontheproblematlength,butnoamountofextendedreflectioncoul
Ryan’s______botheredhisfriends,whotiredofinstabilityandconstantchanges
Becauseshewasasuccessfulentrepreneurwhodonatedlargeamountsofmoneyto
Acertainamountoftheoreticalfrenzyaboutcomicstodayis(i)__________.Afte
Sheconstantly______herselffornotlivinguptoherownideals梖ornotworking
Thestruggleofthegenerationsisoneoftheobviousconstantsofhumanaffairs
Borrowingacopyrightedbookfromalibraryamountstoaformoftheft(i)____b
ThestartlingfindingthatvariationsintherateoftheEarth’srotationdepend
Thepressureofpopulationonavailableresourcesisthekeytounderstandinghi
随机试题
ThemandidthefollowingthroughtheInternetthatdayEXCEPT_______.[br][o
HeatStressThemostcommonhealthproblem【T1】______hotweatherisheat
Goodafternoon,folks.Today’sdiscussiontopicis"OnlineShopping".Witho
Whatisthenewsitemmainlyabout?[br][originaltext]VolunteersfromIndo
[originaltext]ManyAmericanwomenbelievebreastcanceristhebiggestthre
城市环境污染从不同角度、不同方面有多种分类,按()划分,可分为大气污染、水体
根据《消防应急照明和疏散指示系统技术标准》及《火灾自动报警系统设计规范》,下列做
下列说法正确的是()。 A.如果股票内部收益率小于必要收益率,则可购买该股票
产品责任险的责任免除有()。A.被保险人根据合同或协议应承担的责任 B.被保
关于SLE病人妊娠问题,哪项不正确A、易发生流产、早产 B、可出现新生儿狼疮
最新回复
(
0
)