首页
登录
职称英语
What is this passage talking about? [br] [originaltext] We’ve become alarm
What is this passage talking about? [br] [originaltext] We’ve become alarm
游客
2023-11-19
37
管理
问题
What is this passage talking about? [br]
We’ve become alarmed over the health center by the number of students who are experiencing hearing loss. First, I want to go over some basic about hearing. Then we can take a look at our school environment and see if we can figure out some ways to protect hearing. The leading cause of preventable hearing loss is excessive noise. Too much moderate noise for a long time or some types of intense noise for even a short time can damage hearing. Loudness is measured by decibels. One decibel is the lowest sound the average person can hear. Sounds up to 80 decibels generally aren’t harmful. That’s noise like traffic on a busy street. But anything louder than 80 decibels may hurt your hearing. Once you are up to 140 decibels, that’s like a jet plane taking off, then you might even feel pain in your ears. Those are sure sign that your hearing’s at risk. Even one exposure to a really loud noise at close range can cause hearing loss. So what you need to do is limit your exposure to harmful levels. If you pass along this handout, we can take a look at the decibel level of some common campus sounds. Notice how loud those horns are that people take to football games. They are really dangerous if blown right behind you.
选项
A、Traffic on a busy street.
B、Jet plane taking off.
C、Sound that the average person can hear.
D、Sounds up to 80 decibels.
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3200098.html
相关试题推荐
_______rankssecondamongleadingtourismnations.[br][originaltext] Thereh
WhatwouldhappentotheArgentineofficers?[originaltext]Around44military
Themuseumwasbuiltinmemoryofthose[br][originaltext] TheInternational
Themuseumwasbuiltinmemoryofthose[originaltext] TheInternationalRedCr
Accordingtothepassage,landladiesare______.[br]WhatisNOTmentionedasa
Whatisthenewsmainlyabout?[br][originaltext]AnIndonesianferrypacked
Whatisthenewsmainlyabout?[originaltext]AnIndonesianferrypackedwith
WhichofthefollowingisNOTmentionedinthefollowingnews?[originaltext]
WhohadtoleavetheGazaStripandtheWestBank?[originaltext]Israel’sar
Accordingtothetalk,theownerofabikehasto______.[br][originaltext]
随机试题
AnAustralianresearchgroupmayeasehumanity’scollectiveconscienceover
[audioFiles]audio_eusm_j01_260(20099)[/audioFiles]A、Themancouldn’tfindapar
WhyIntegrityMattersWhatIsIntegrity?Thekeytoint
Whatdoesitmeantoobeythelaw?That【B1】______onwhereyouare.Different
男性,38岁,右上腹疼痛、寒战、高热、黄疸1天。查体:体温39.6C,血压83/
自动喷水灭火系统附件水力警铃和报警阀的连接,采用热镀锌钢管,当镀锌钢管的公称直径
基础心理学是研究()。 (A)正常成人心理现象的心理学基础学科 (B
影响农产品需求的因素主要包括( )。A.农产品价格 B.农业资源 C.生产
(2019年真题)在情景化结构面试通常需要遵循“STAR"原则,其中“T”表示(
2019年1月1日,甲有限责任公司资产负债表中股东权益各项目年初余额为:实收资本
最新回复
(
0
)