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
专升本
To get some idea of the amount of heat the sun gives off, think about this, if you could collect all the heat that hits the eart
To get some idea of the amount of heat the sun gives off, think about this, if you could collect all the heat that hits the eart
admin
2015-02-09
38
问题
To get some idea of the amount of heat the sun gives off, think about this, if you could collect all the heat that hits the earth in a two-week period, it would equal the amount of all other known sources and reserves of energy: wood, coal, and oiL But even these sources of energy depend on the sun for their formatioa For example, a tree would certainly never grow and provide fuel in the form of wood were it not for the sun.
Because the sun is so important in the production of all forms of heating fuel, more and more time and money are being spent studying ways to change power from the sun directly into a form of heat. The process currently in use for collecting energy from the sun—known as solar energy is quite simple. The sunlight hits a metal plate known as a flat-plate collector, and the plate absorbs the heat from the sua This heat, in turn, heats a liquid inside the plate. A layer of fiber-glass inside the plate helps prevent this heat from escaping. In this way, solar heat can be stored in a liquid solution equaling about 1 000 watts of electricity per square meter.
In the 1960s, a solar furnace was installed in the Pyrenees Mountains of France to test the use of solar energy. In this furnace, a mirror is used to concentrate the sun’s heat. This concentrated heat keeps temperatures in the furnace as high as 6 000F.
What have the scientists been studying?
选项
A、Ways to change sun power directly into electricity.
B、Ways to change sun power into a form of solid.
C、Ways to change sun power into a form of heat.
D、Ways to change sun power into a form of liquid.
答案
C
解析
细节题。答案可从文章第二段第一句得出。
转载请注明原文地址:https://kaotiyun.com/show/byUC777K
本试题收录于:
英语题库普高专升本分类
0
英语
普高专升本
相关试题推荐
You______thedifficultiesafterIexplainthewholethingtoyou.
Themanagerwouldratherhisdaughter______inthesameoffice.
—Thelightintheofficeisstillon.—Oh,Iforgot______.
______hisjobattheuniversity,he’snowrunninghisownresearchcompany.
Theeyesarethemostimportant【61】ofhumanbodythatisusedto【62】information.Eyecontactiscrucialforestablishin
小明想到一个处理废水的好办法。
Shehappenedtowitnessanaccident______inthestreetlastnight.
Workaholism(工作狂)canbeaseriousproblem.Trueworkaholics(工作狂)wouldratherworkthandoanythingelseandtheyprobablydon
A、Policemanandthief.B、Policemananddriver.C、Teacherandstudent.D、Directorandactress.B
Mycameracanbe______totakepicturesincloudyorsunnyconditions.
随机试题
据《周礼》记载,周朝专设司民之职,这反映出古代很早就有【】
管理的二重性是指( )
在PC机中实现硬盘与主存之间数据传输的主要控制部件是中断控制器。()
患者男性,49岁。因全身乏力、头晕,手指有麻木感前来就诊。体检:面色苍白,巩膜轻度黄染,舌质绛红色,舌乳头萎缩,心率101次/分。实验室检查:红细胞2.3×1012/L,血红蛋白78g/L,白细胞4.9×109/L。Coombs试验阴性。患者确诊还需做
以阴阳失调来阐释真寒假热或真热假寒,其病机是
A.普萘洛尔B.苯妥英钠C.奎尼丁D.利多卡因E.胺碘酮可诱发或加重支气管哮喘急性发作的药物是()。
所谓违法分包的行为,是指()
除法定情形外,外国人在我国就业实行()。
试述西欧中世纪早期教育的基本特点及其产生的原因。
A、Gotowork.B、Tellthenewstootherpeople.C、Buyanumbrella.D、Gohometoclosethewindows.D行动计划题。男士说新闻报道说未来两天会刮风下雨;女士忽然想
最新回复
(
0
)