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
A、Less than 100 decibels. B、Less than 184 decibels. C、Less than 89 decibels. D、Less than 124 decibels. C细节辨认题。短文中指出,专家认为,即使人们每周只
A、Less than 100 decibels. B、Less than 184 decibels. C、Less than 89 decibels. D、Less than 124 decibels. C细节辨认题。短文中指出,专家认为,即使人们每周只
admin
2012-05-28
57
问题
(30)Millions of youngsters across Europe could suffer permanent hearing loss after five years if they listen to MP3 players at too high a volume for more than five hours a week, European Union (EU) scientists warned Monday. The scientists’ study, requested by the European Commission, attacked the concept of "leisure noise," saying children and teenagers should be protected from increasingly high sound levels. "There has been increasing concern about exposure from the new generation of personal music players which can reproduce sounds at very high volumes without loss of quality," the Commission, the EU’s executive arm, said in a statement. (31)"Risk for hearing damage depends on sound level and exposure time," it said. "More and more young people were exposed to the significant threat that leisure noise posed to hearing." Commission experts estimate that between 50 and 100 million people listen to portable music players on a daily basis. (32) If they listened for only five hours a week at more than 89 decibels (分贝), they would already exceed EU limits for noise allowed in the workplace. But if they listened for longer periods, they risked permanent hearing loss after five years. The scientists calculated the number of people in that risk category at between 5% and 10% of listeners, meaning up to 10 million people in the European Union. Sales of personal music players have soared in EU countries in recent years, particularly of MP3 players. Commission experts estimate unit sales between 184 and 246 million for all portable audio devices just over the last four years, of which MP3 players range between 124 and 165 million.
30. What will happen to people listening to MP3 players at too high a volume for a long time?
31. According to the EU statement, what factors decide the risk for hearing damage?
32. What might be the EU limits for noise allowed in the workplace?
选项
A、Less than 100 decibels.
B、Less than 184 decibels.
C、Less than 89 decibels.
D、Less than 124 decibels.
答案
C
解析
细节辨认题。短文中指出,专家认为,即使人们每周只听5个小时MP3,音量高于89分贝,那就已经超过了欧盟的“工作场合噪音最高限值”。凶此,工作环境的噪音限值应该低于89分贝。
转载请注明原文地址:https://kaotiyun.com/show/m3E7777K
0
大学英语六级
相关试题推荐
A、SheforgottobuyaChristmaspresentforherdaughter.B、Shecouldn’taffordanewbicycleforherdaughterasaNewYearpre
A、Oldpeoplethinkoftheyoungas"aproblem".B、Oldpeoplecreatethis"problem"ofagedifference.C、Oldpeoplehaveapast;
A、Richpeople.B、Computersandlawyers.C、Amurder.D、Crime.D对话中,男士说有钱人通过计算机和律师偷盗,而不是暴力,女士说至少计算机不会杀人,并认为暴力犯罪比白领犯罪更可怕。故正确答案为D。
TheUniversityLibraryisoneofthelargest【B1】______librariesinthecountry,witha【B2】______ofsometwomillionvolumes.T
A、Theydidn’tnoticethem.B、Theygavemythologicalexplanations.C、Theyignoredthem.D、Theychosetoavoidseeingthem.B事实细节题
Duringastateofdeeprelaxation,severalphysiologicalchangestakeplaceinthebody:Thebody’soxygenconsumptionisreduce
Thehumancriterionforperfectvisionis20/20forreadingthestandardlinesonaSnelleneyechartwithoutahitch.Thescore
A、Shesucceededininvesting.B、Shewasknowledgeableforarts.C、Shesucceededinpaintings.D、Shedislikedbooksandarts.B文章
A、Businessexecutives,housewivesandcollegestudents.B、Parentsplanningfortheirchildren’seducation.C、Adultswithorwith
Withtheglobaleconomynowtakingmoreexecutivestofar-awayplaceslikeBeijingandMumbai,jetlagisbecomingabiggerprob
随机试题
东风雪铁龙公司在“非典”期间,为了刺激车市升温,推出降价促销活动,对旗下中低档的富康系列轿车展开全国范围的促销,率先由2003年初的9.78万元调整至8.8万元促销价。富康系列轿车作为东风雪铁龙旗下主力车型之一,被消费者称为中国两厢车的经典。来自北京亚运村
A.内隐斜B.外隐斜C.显斜D.隐斜E.以上均不正确
某女,腹部胀痛,疼痛拒按,胸闷不舒,得热痛增,遇寒痛减,烦渴引饮,身热自汗,小便短赤,大便秘结,苔黄燥,脉滑数,治宜
目前诊断子宫内膜异位症的最佳方法是
常先困脾的邪气是
股票是一种()凭证。
一旦发现游客有中风征兆,导游应立即将其搀扶到旅游车上去休息。()
欢欢小朋友在回答自己为什么是个好孩子时说:“我不撒谎,我帮妈妈扫地,我把玩具让给阳阳先玩。”这是()
关于走私、贩卖、运输、制造毒品罪的正确说法是()。
下面是IP协议中C类IP地址有关规定的叙述,其中正确的是()。
最新回复
(
0
)