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
Constant variations in the amount of sunlight available on Earth at any given location make energy storage a necessary design fe
Constant variations in the amount of sunlight available on Earth at any given location make energy storage a necessary design fe
admin
2020-09-28
80
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.
The primary purpose of the passage is to discuss which of the following?
选项
A、Reasons for the necessity for developing solar-energy systems
B、Different ways of storing solar energy as heat
C、New designs for devices that collect solar energy
D、Procedures for transferring thermal energy between materials
E、Differences between capacities of solids and liquids to store sensible heat
答案
B
解析
本题属于主旨题,而本文是总分结构,因此正确答案只要同义改写本文主旨句即可,故选项B正确。different ways对应的是潜热和显热。A项文中未提及。C项文中未提及。D项属于细节。E项文中未提及。
转载请注明原文地址:https://kaotiyun.com/show/XQVO777K
本试题收录于:
GRE VERBAL题库GRE分类
0
GRE VERBAL
GRE
相关试题推荐
Australianresearchershavediscoveredelectroreceptors(sensoryorgansdesignedtorespondtoelectricalfields)clusteredatthe
JosephGlatthaar’sForgedinBattleisnotthefirstexcellentstudyofBlacksoldiersandtheirWhiteofficersintheCivilWar
Attheendofthenineteenthcentury,arisinginterestinNativeAmericancustomsandanincreasingdesiretounderstandNative
Schoolsexpecttextbookstobeavaluablesourceofinformationforstudents.Myresearchsuggests,however,thattextbooksthat
Schoolsexpecttextbookstobeavaluablesourceofinformationforstudents.Myresearchsuggests,however,thattextbooksthat
Untilrecentlyexpertsbelievedthatenvironment,notgenetics,largelydetermineshumanpersonality.Anewstudy,however,has
Environmentalscientist:Itistruethatoverthepasttenyears,therehasbeenasixfoldincreaseingovernmentfundingforth
Whilethereisnoblueprintfortransformingalargelygovernment-controlledeconomyintoafreeone,theexperienceoftheUnit
ThethousandsofvolcanicislandsandcoralatollsoftheSouthSeashaveatotalpopulationofaboutfourmillion,butthepauc
随机试题
慢性消耗性疾病时,下列哪些细胞可出现脂褐素
黄色泡沫样脓性白带常见于
阳黄患者,经治黄疸消退后,症见脘腹作胀,胁肋臆痛,不思饮食,肢体困倦,大便时秘时溏,舌苔薄白,脉弦细。治疗宜用
新药监测期内的药品应报告该药品发生的
平整度测试方法有()。
下列说法正确的是()。
下列句子中,有语病的一项是()。
下列关于“三农”问题表述有错误的一项是()。
下列国际单位制中对应关系错误的是()。
自我实现预期:当人们对后果有期望或期待时,就会引发某种行为,预期可以通过自我暗示或他人暗示形成自我激励或他人激励,对激发与调动潜在的能力起到一定的作用。积极的预期会产生积极的结果,消极的预期则产生消极的结果。下列现象不属于“自我实现预期”的是()。
最新回复
(
0
)