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
外语
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 eff
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 eff
admin
2011-02-28
95
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 sounds 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 band. 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.
Decibel might be ______.
选项
A、an effect of noise on human behavior
B、a person’s distance to a noise source
C、a degree of deafness caused by noise
D、a measure of the loudness of sound
答案
D
解析
从这里看,我们可以依据好几个方法来判断decibel的意义:比如说,从intensity和frequency可以按照上下文的规律来推断它的意义;从85这个数字可以从常识来推断它的意思;从exposure则可以从句子的整体表达末判断它的意义等。
转载请注明原文地址:https://kaotiyun.com/show/qMtd777K
本试题收录于:
公共英语三级笔试题库公共英语(PETS)分类
0
公共英语三级笔试
公共英语(PETS)
相关试题推荐
Pollutionisa"dirty"word.Topollutemeanstocontaminate—topsoilorsomethingbyintroducingimpuritieswhichmake【C1】______
Pollutionisa"dirty"word.Topollutemeanstocontaminate—topsoilorsomethingbyintroducingimpuritieswhichmake【C1】______
Pollutionisa"dirty"word.Topollutemeanstocontaminate—topsoilorsomethingbyintroducingimpuritieswhichmake【C1】______
Wehaveknowntheelephants,thegreatestlandmammalofthemall—highlysensitive,intelligent,family-oriented,big-toothedcr
Wehaveknowntheelephants,thegreatestlandmammalofthemall—highlysensitive,intelligent,family-oriented,big-toothedcr
Interlocutor:Now,I’dlikeyoutotalkaboutsomethingforabout3minutes.I’mjustgoingtolisten.I’dlikeyoutodiscussab
Interlocutor:Now,I’dlikeyoutotalkaboutsomethingforabout3minutes.I’mjustgoingtolisten.I’dlikeyoutodiscussab
ItwasthedayIfrozeahouseholdpetthatIbegantoworryaboutmymemory.Technically,itwasnotarealhouseholdpetIfro
"Family"isofcourseanelasticword.Andindifferentcountriesithasdifferentmeanings.ButwhenBritishpeoplesaythatth
Accordingtothepassage,whatdoestheunderlinedphrase"livedabit"mean?Theinterpretersrelyonadrenalinebecause_____
随机试题
根据《人民调解委员会组织条例》,人民调解委员会的性质是()。
在一家运动鞋专卖店,店主将一双运动鞋定价为159元,这种定价策略属于()
有关肾小管的描述,下列哪个是不正确的
A.毒扁豆碱B.阿托品C.山莨菪碱D.新斯的明E.东莨菪碱治疗晕动症可选用()
A、青霉素B、氯霉素C、红霉素D、土霉素E、环丙沙星治疗流行性脑脊髓膜炎首选的药物是
提高受弯构件抗弯刚度(减小挠度)最有效的措施是:
股权投资基金管理人应当提供股权投资基金登记和备案所需的文件和信息,保证所提供文件和信息的()。I.真实性Ⅱ.准确性Ⅲ.完整性
下图是王红同学利用Word制作文档结果的一部分,其中剪贴画的环绕方式为()。
加强党对公安机关的组织领导,是实现党对公安机关领导的组织保证,其实现途径是()。
宋朝王安石的《伤仲永》中说有一个叫方仲永的少年,5岁时就能作诗,但后来由于他父亲没有及时教育,使他到十二三岁时写的诗就不如以前了;到20岁左右,则“泯然众人矣”。“近朱者赤,近墨者黑”体现了()对于人发展的影响。
最新回复
(
0
)