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
If you live in a large city, you are quite familiar with some of the problems of noise, but because of some of its harmful effec
If you live in a large city, you are quite familiar with some of the problems of noise, but because of some of its harmful effec
admin
2014-03-28
39
问题
If you live in a large city, you are quite familiar with some of the problems of noise, but because of some of its harmful effects, you may not be aware of the extent of its influence on human behavior. Although everyone more or less knows what noise is, i. e. it is sound that one would rather not hear, it is perhaps best to define it more precisely for scientific purposes. One such definition is that noise is sounds that are unrelated to the task at hand. Thus stimuli(刺激物)that at one time might be considered relevant will at another time to be considered noise, depending on what one is doing at the moment. In recent years there has been a great deal of interest in the effects on human behavior, and concepts such as "noise pollution" have arisen, together with movements to reduce noise.
Exposure to loud noises can definitely produce a partial or complete loss of hearing, depending on the intensity, duration, and frequency composition of the noise. Many jobs present noise hazards(危险), such as working in factories and around jet aircraft, driving farm tractors, and working in music halls where rock bands are playing. In general, continuous exposure to sounds of over 80 decibels can be considered dangerous. Decibel values correspond to various sounds. Sounds above 85 decibels may, if exposure is for a sufficient period of time, produce significant hearing loss. Noise can have unexpected harmful effects on performance of certain kinds of tasks, for instance, if one is performing a watch keeping task that requires vigilance(注意), in which he is responsible for detecting weak signals of some kind(e. g. watching a radar screen for the appearance of aircraft).
Communicating with other people is unfavorably affected by noise. If you have ridden in the rear of a jet transport, you have noticed that it was difficult to carry on a conversation at first, and that, eventually you adjusted the loudness of your speech to compensate for the effect. The problem is noise.
Jet aircraft is mentioned in the passage as an example of______.
选项
A、means of modern transport
B、sources of loud sound
C、people’ s interest in noise
D、movements to reduce noise
答案
B
解析
转载请注明原文地址:https://jikaoti.com/ti/9MmGFFFM
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
Theboywhoappliedtojointhearmywas______becausehewasunderage.
Inancienttimesthemostimportantexaminationswerespoken,notwritten.IntheschoolsofancientGreeceandRome,testingus
Theoldcoupledecidedtomoveoutoftowntoaquiet______,wheretheyhadspentseveralyearsimmediatelyaftertheirmarria
Itis(scientific)______tothinkthatsciencecansolvealltheproblemsforhumanbeings.
Therearetwofactorswhichdetermineanindividual’sintelligence.Thefirstisthesortofbrainheisbornwith.Humanbrains
Shehasboughtsomelovely______tomakeherselfadress.
Itisduringhissparetime______Johnsonhasbeenstudyingacourseinhistory.
Thecar______seventymilesperhouruntilitreachestheriversideataboutteno’clocktonight.
Whatshouldyouthinkaboutwhentryingtofindyourcareer?Youareprobablybetteratsomeschoolsubjectsthanothers.These
—Excuseme.Whereisthewashroom,please?—______
随机试题
生物碱类镇痛药的代表性药物是
研究生产环境和劳动者健康之间相互关系规律的学科是凡生产性有害因素所引起职业病的学科是
患者,女,30岁。分娩后2周发生阴道大量出血入院。护士对患者进行健康评估时,与病情最不相关的是()。
案情:《政府采购法》规定,对属于地方预算的政府采购项目,其集中采购目录由省、自治区、直辖市政府或其授权的机构确定并公布。张某在浏览某省财政厅网站时未发现该省政府集中采购项目目录,在通过各种方法均未获得该目录后,于2013年2月25日向省财政厅提出公开申请。
赵某与陈女订婚,付其5000元彩礼,赵母另付其1000元“见面礼”。双方后因性格不合解除婚约,赵某诉请陈女返还该6000元费用。法官根据《婚姻法》和最高法院《关于适用若干问题的解释(二)》的相关规定,认定该现金属彩礼范畴,按照习俗要求返还不违反法律规定,遂
根据F1DIC条款,业主应补偿因异常恶劣的气候条件而造成的承包商的停工、损失。()
撒哈拉沙漠南缘的11个国家正联手打造一条横穿非洲大陆的绿化带。读图文资料,回答问题。材料一这条被称为“绿色长城”的绿化带,计划总长度为7100千米,宽15千米。材料二绿化带沿线地区的天然树木旱季落叶。新建的绿化带要求树木种植的密度比较大,且树
十九大报告指出,十八大以来的五年,经济保持__________增长,在世界主要国家中名列前茅,国内生产总值从五十四万亿元增长到_________万亿元,稳居世界第二,对世界经济增长贡献率超过百分之三十。()
劳动教养的时间,从通知收容之日起计算,通知以前先行羁押的,1日折抵劳动教养2日。( )
InthegrandschemeofthingsJeremyBenthamandJohnStuartMillarenormallythoughtofasgoodguys.Betweenthem,theycame
最新回复
(
0
)