首页
登录
职称英语
These days, many large city buildings are equipped with their own air-condit
These days, many large city buildings are equipped with their own air-condit
游客
2023-07-05
68
管理
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°C 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°C 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. [br] What happens in the end to the water from Lake Ontario?
选项
A、It is used by the residents of Toronto.
B、It is returned to a place deep in the lake.
C、It is cooled down before being used again.
D、It is added to the water inside air-conditioning systems.
答案
A
解析
细节题。短文第三段最后指出After that,the lake water is added to the city’s ordinary water supply.即湖水最后应用到城市居民用水中。故选A。
转载请注明原文地址:https://tihaiku.com/zcyy/2809840.html
相关试题推荐
Thesedays,manylargecitybuildingsareequippedwiththeirownair-condit
Thesedays,manylargecitybuildingsareequippedwiththeirownair-condit
Thesedays,manylargecitybuildingsareequippedwiththeirownair-condit
Thesedays,manylargecitybuildingsareequippedwiththeirownair-condit
Thesedays,manylargecitybuildingsareequippedwiththeirownair-condit
[originaltext]TwohoursfromthetallbuildingsofManhattanandPhiladelph
[originaltext]TwohoursfromthetallbuildingsofManhattanandPhiladelph
[originaltext]TwohoursfromthetallbuildingsofManhattanandPhiladelph
Althoughmanyofusmayfeelair-conditionersbringrelieffromhot,humido
Althoughmanyofusmayfeelair-conditionersbringrelieffromhot,humido
随机试题
Toooftenteachers’______withparentsinvolvecomplaintsaboutchildren’smisb
[originaltext]M:Ofthetwohouseswehaveseen,whichonedoyouthinkfitsou
TheJourneyofSelfImprovementI.Phasesofthejourneyof
图中部件的名称是()。 A.电磁阀 B.水流指示器 C.压力开关
已知岩石的岩石干重度γd=20kN/m3,岩石的天然重度γG=23kN/m3,饱
参与抗肿瘤作用的细胞有A、CTL B、NK细胞 C、中性粒细胞 D、嗜酸性
变电站通风设施进出口、自然排水口应有(____)等防止小动物进入措施。密闭百叶板
某银行2008年初关注类贷款余额为4000亿元,其中在2008年末转为次级类、可
下列不属于破坏金融管理秩序的行为是()。A:银行工作人员为不符合条件的社会公益组
胎盘的合成功能,不包括哪项A.缩宫素酶 B.前列腺素 C.绒毛膜促性腺激素
最新回复
(
0
)