首页
登录
职称英语
Although many of us may feel air-conditioners bring relief from hot, humid o
Although many of us may feel air-conditioners bring relief from hot, humid o
游客
2024-02-02
4
管理
问题
Although many of us may feel air-conditioners bring relief from hot, humid or polluted outside air, they pose many potential health hazards. Much research has looked at how the movement of air inside a closed environment—such as an office building—can spread disease or expose people in the building to harmful chemicals.
One of the more widely publicized dangers is that of Legionnaire’s disease, which was first recognized in the 1970s. This was found to have affected people in buildings with air-conditioning systems in which warm air pumped out of the system’s cooling towers was somehow sucked back into the air intake(通风口), in most cases due to poor design. The warm air, filled with bacteria, was combined with cooled, conditioned air and was then circulated around various parts of the building. Studies showed that even people outside such buildings were at risk if they walked past air exhaust pipes.
Large air-conditioning systems add water to the air they circulate by means of humidifiers(湿度调节器). In older systems, the water used for this process is kept in special reservoirs, the bottoms of which provide breeding grounds for bacteria which can find their way into the ventilation(通风)system. The risk to human health from this situation has been highlighted by the fact that the immune systems of approximately half of workers in air-conditioned office buildings have developed the ability to fight off the organisms found at the bottom of system reservoirs. But chemicals called "biocides" are added to reservoirs to make them germ-free, and they are dangerous in their own right in sufficient quantities, as they often contain compounds strongly linked to cancers.
Finally, it should be pointed out that the artificial climatic environment created by air-conditioners can also affect us. In a natural environment, whether indoor or outdoor, there are small variations in temperature and humidity. Indeed, the human body has long been accustomed to these normal changes. In an air-conditioned living or work environment, however, body temperatures remain well under 37℃, our normal temperature. This leads to a weakened immune system and thus greater exposure to diseases such as colds and flu. [br] What do we know about Legionnaire’s disease from the passage?
选项
A、It was the most widely concerned office hazard.
B、It can affect people both inside and outside the building.
C、It happens only in air-conditioned office buildings.
D、It does not develop in well-designed buildings.
答案
B
解析
本题主要考查复合句的理解。第2段最后一句表明B是正确选项。A中的most和C中的only都太绝对了,文中并未对A和C中的相关说法加以这样的限定。D也太绝对了,第2段第3句只是说到“大多数情况下是因为空调设计欠佳所致”,并不是说所有设计良好的大厦就不会发生这种情况。
转载请注明原文地址:https://www.tihaiku.com/zcyy/3414958.html
相关试题推荐
Friendsplayanimportantpartinourlives.Andalthoughwetaketheactof
Friendsplayanimportantpartinourlives.Andalthoughwetaketheactof
Friendsplayanimportantpartinourlives.Andalthoughwetaketheactof
Friendsplayanimportantpartinourlives.Andalthoughwetaketheactof
Mostpeoplewouldagreethat,althoughourageexceedsallpreviousagesin
Mostpeoplewouldagreethat,althoughourageexceedsallpreviousagesin
Mostpeoplewouldagreethat,althoughourageexceedsallpreviousagesin
Mostpeoplewouldagreethat,althoughourageexceedsallpreviousagesin
Althoughthestigma(耻辱)onceassociatedwithmentalillnesshasgraduallygon
Althoughthestigma(耻辱)onceassociatedwithmentalillnesshasgraduallygon
随机试题
WhyIndiaIsPoorandCorruptWhileJapanIsRichandCleanA)Inthe
Tensofthousandsofthepoorestpart-timestudentsaretogetextramoneyt
Ilovetravelingbytrain.Fast【B1】______,slowlocaltrainswhichstopate
(三)某镇政府为维护本地区社会稳定组建了社会治安综合治理办公室(以下简称综治办)
急性额骨骨髓炎()A.发热、恶心、叩击痛、出现中心盲点 B.视力下
铸件上常出现金属小结的原因是()A.包埋材料透气性差 B.包埋时未
关于增值税纳税义务发生时间的说法正确的是( )A.赊销和分期收款方式,有书面合
住房公积金个人住房贷款审批主体是( )。A.受托办理贷款银行 B.当地住房公
目前,按我国基金信息披露法规要求,当偏离度达到一定程度时,货币市场基金应刊登偏离
民事法律行为具有以下()特征。 A.应是合法行为 B.是民事主体以设立、变更或
最新回复
(
0
)