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
职业资格
These days, many large city buildings are equipped with their own air-conditioning systems. These systems help keep the building
These days, many large city buildings are equipped with their own air-conditioning systems. These systems help keep the building
admin
2017-03-25
36
问题
These days, many large city buildings are equipped with their own air-conditioning systems. These systems help keep the buildings cool, but they can also damage the environment. Since they use a lot of electricity, for instance, they contribute indirectly to global warming. In addition, the water that flows through the systems is often cooled using chemicals called chlorofluorocarbons, or CFCs, that are believed to damage the Earth’s ozone layer. Recently, though, a system has been built in the city of Toronto, Canada, that cools buildings with little damage to the environment.
In the traditional air-conditioning systems found in most large buildings, water is pumped through the building in a continuous cycle. The water is first cooled to a temperature of 4℃ in machines called chillers. It is then sent to individual units that cool the air in each room. As the water flows through the building, it gradually becomes warmer. Finally, it reaches the roof, where it is left to cool down naturally in a water tower. After that it is returned to the chillers, where the cycle begins again.
Toronto lies on the shore of Lake Ontario, one of North America’s Great Lakes, and the new system makes use of cold water taken from about 80 meters below the surface of the lake. At this depth, the water in the lake remains at 4℃ all year round. This is exactly the temperature to which the water in air-conditioning systems is cooled. However, the water from the lake is not pumped directly into the air-conditioning systems. Instead, it is used to cool the water that is already inside the air-conditioning systems. After that, the lake water is added to the city’ s ordinary water supply.
Enwave, the company that developed this deep-lake cooling system, says that it uses 75 percent less energy than traditional air conditioning. And since no CFCs are used, no damage can be caused to the ozone layer. Not every city is located next to a large lake, but experts believe that systems like the one being used in Toronto could be built elsewhere by using other natural sources of cold water.
What is one advantage of Enwave’ s new system?
选项
A、It keeps buildings much cooler than other methods.
B、It can be used by large cities anywhere in the world.
C、It is much more energy-efficient than traditional systems.
D、It keeps water from being used for more than one purpose.
答案
C
解析
细节题。短文最后一段第一句指出“Enwave…deep-lake cooling system,says that it uses75 percent less energy than traditional air conditioning.”,即与传统的空调系统相比,Enwave公司设计的这种新的制冷系统使用的能源要少75%,由此可知,选项C正确。
转载请注明原文地址:https://kaotiyun.com/show/RB3v777K
本试题收录于:
英语学科知识与教学能力题库教师资格分类
0
英语学科知识与教学能力
教师资格
相关试题推荐
根据下列材料设计教学片段。(1)《义务教育历史课程标准(2011年版)》规定:了解郑和下西洋的航海壮举;知道戚继光的抗倭斗争。(2)课文摘录:1405年,郑和率领二万七千多人,乘坐二百多艘船,第一次出使西洋。庞大的船队驶离刘家港,出长江
______helpsstudentsfacilitatetheirprocessofaccumulatingvocabulary,broadeningscopeofvision,andincreasingtargetlang
Whichofthefollowingdoesateacherwanthis/herstudentstodevelopifhe/sheguidesthemtotakenoteskeywords,abbrev
JuliaGillard,aseducationministerandthenprimeminister,identifiedtheGonskiReportonschoolfunding,laterrenamedthe
JuliaGillard,aseducationministerandthenprimeminister,identifiedtheGonskiReportonschoolfunding,laterrenamedthe
Mostyoungarchitects—particularlythoseinbigcities—canonlydreamaboutworkinginabuildingoftheirown.Andmakingthat
Thesedays,manylargecitybuildingsareequippedwiththeirownair-conditioningsystems.Thesesystemshelpkeepthebuilding
Thesedays,manylargecitybuildingsareequippedwiththeirownair-conditioningsystems.Thesesystemshelpkeepthebuilding
随机试题
A.发冷、麻木B.间歇性跛行C.静息痛D.肢端坏疽E.5"P"征
7个月患儿,呕吐腹泻4天,大便10~15次/天,呈蛋花汤样,尿量极少,皮肤弹性差,呈花纹状,眼窝、前囟明显凹陷,心音低钝,四肢厥冷,大便镜检偶见白细胞,血清钠124mmol/L。该患儿的诊断为
按照()体系标准,对现场试验工作进行管理,并建立相关制度。
采用记账凭证账务处理程序时,总分类账是根据记账凭证逐笔登记的。()
导游服务的作用之一是直接和间接地传播一个国家或地区的传统文化和()。
大强度运动持续30秒至90秒时,主要由()提供能量供运动肌收缩利用。
有家长对孩子说:“我们与别人交同样的多的钱,分水果时不要拿小的”。针对这种现象,胡老师讲“孔融让梨”的故事.教育儿童。胡老师的做法()
M18420673712W0594
对下面句子的修辞方法及其作用的表述,判断不正确的一项是:
Youmaysaythatthebusinessofmarkingbooksisgoingtoslowdownyourreading.(31)probablywill.That’soneofthe(32)fo
最新回复
(
0
)