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
2025-02-19
29
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/3964170.html
相关试题推荐
Aplant-basedautomobilefuelhasjustbecomeavailableinTernland.Acarc
Youshouldspendabout20minutesonthistask.Thechartbelowshowstheamount
Somepeoplethinkthattheamountoftimeandmoneyspentontheprotection
Shouldacountryinvesthugeamountsofmoneyontheresearchofweapons?
Nowadaysalargeamountofadvertisingisaimedatchildren.Parentsobject
ThechartbelowshowstheamountofmoneyperweekspentonfastfoodsinBr
Thetableshowstheamountofwasteproducedbydifferentcountriesin1980,
[img]2014m8s/ct_eirm_eirread_0262_20144[/img]PERSONALCOMPUTERSAVAILABLEFORP
[img]2014m8s/ct_eirm_eirread_0262_20144[/img]PERSONALCOMPUTERSAVAILABLEFORP
[img]2014m8s/ct_eirm_eirread_0262_20144[/img]PERSONALCOMPUTERSAVAILABLEFORP
随机试题
DinaBorzekowsldmadeastudyofagroupofthird-gradestudentsfromsixAm
Howmanyartistsareontherecording?[br][originaltext]Morethan60Cou
[originaltext]W:Imadeabigmistaketoday.Ireadastudent’sarticletothe
直接工程费是指施工过程中耗费的构成工程实体的各项费用,包括()。I.人工费;
关于开发和利用化学课程资源,下列说法不正确的是( )。A.学校应向高中学生开放
关于测绘地理信息档案管理的说法中正确的有( )。A.测绘地理信息业务档案定期保
人在每一瞬间,将心理活动选择了某些对象而忽略了另一些对象。这一特点指的是注意的(
案例十: 下面是某求助者的SCL-90测验结果: 总分243阳性项目数57
A.釉质周期性生长速率改变所形成的间歇线 B.是全身代谢障碍的表现 C.可以
财务管理的核心是基于()的管理。A.安全 B.资产 C.价值 D.利
最新回复
(
0
)