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
2023-07-01
65
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] The author most probably wants the readers to treat biocides with an attitude of_____.
选项
A、caution
B、trust
C、enthusiasm
D、criticism
答案
A
解析
第3段最后两句讨论生物杀灭剂的用处,其中最后一句中的but,dangerous和cancers等词说明作者认为要慎用这种杀灭剂。作者并没对杀灭剂全盘否定,只是说过量使用会引发危险,因此D不对。
转载请注明原文地址:https://www.tihaiku.com/zcyy/2798695.html
相关试题推荐
Althoughthestigma(耻辱)onceassociatedwithmentalillnesshasgraduallygon
Althoughthestigma(耻辱)onceassociatedwithmentalillnesshasgraduallygon
AlthoughtheOlympicCharter,theofficialconstitutionoftheOlympicmovem
AlthoughtheOlympicCharter,theofficialconstitutionoftheOlympicmovem
Althougheachbabyhasanindividualscheduleofdevelopment,generalpatter
Althougheachbabyhasanindividualscheduleofdevelopment,generalpatter
Althougheachbabyhasanindividualscheduleofdevelopment,generalpatter
Althougheachbabyhasanindividualscheduleofdevelopment,generalpatter
Althougheachbabyhasanindividualscheduleofdevelopment,generalpatter
Althougheachbabyhasanindividualscheduleofdevelopment,generalpatter
随机试题
ThewritermentionsrainforestsandtheozonelayerA、becausehebelievesanxiety
[A]befriend[B]directly[C]drives[D]slide[E]various[F]enormous[G]dumb[H]p
A、Food.B、Healthcare.C、Cleaning.D、License.A本题考查细节。由句(10)可知,女士说养宠物最大的开支可能是食物。
[originaltext]M:(4)Mary,Ihopeyouarepackedandreadytoleave.W:Yes,I’
BythetimeIcomebackfrommyholidays,you______yourpaper.A、willhavefini
碾压贫混凝土作半刚性基层材料时,其强度试验采用与无机结合料稳定()相同的1:1的
关于建设工程质量缺陷责任期的说法,正确的是( )。A.一般为两年,从工程预验收
发包方应监督检查承包方在施工现场的专(兼)职安全员配置和履职、作业人员安全教育培
在团队绩效考评的环节中,首先要做的是( )。A.确定团队绩效测评和个体绩效测评
位于A市A区的甲加工厂和新加坡乙贸易公司签订了一份加工合同,由甲方为乙方加工制作
最新回复
(
0
)