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
The biggest safety threat facing airlines today may not be a terrorist with a gun, but the man with the portable computer in bus
The biggest safety threat facing airlines today may not be a terrorist with a gun, but the man with the portable computer in bus
admin
2010-03-03
29
问题
The biggest safety threat facing airlines today may not be a terrorist with a gun, but the man with the portable computer in business class. In the last 15 years, pilots have reported well over 100 incidents that could have been caused by electromagnetic interference. The source of this interference remains unconfirmed, but increasingly, experts are pointing the blame at portable electronic devices, such as portable computers, radio and cassette players and mobile telephones.
RTCA, an organization which advises the aviation industry, has recommended that all airlines ban such devices from being used during "critical" stages of flight, particularly take-off and landing. Some experts have gone further, calling for a total ban during all flights. Currently, rules on using these devices are left up to individual airlines. And although some airlines prohibit passengers from using such equipment during take-off and landing, most are reluctant to enforce to total ban, given that many passengers want to work during flights.
The difficulty is predicting how electromagnetic fields might affect an aircraft’s computers. Experts know that portable devices emit radiation which affects those wavelengths which aircrafts use for navigation and communication. But, because they have not been able to reproduce these effects in a laboratory, they have no way of knowing whether the interference might be dangerous or not.
The fact that aircrafts may be vulnerable to interference raises the risk that terrorists may use radio systems in order to damage navigation equipment. As worrying, though, is the passenger who can’t hear the instructions to turn off his radio because the music’s too loud.
It can be inferred from the passage that the author ______.
选项
A、is in favor of prohibiting passengers’ use of electronic devices completely
B、has overestimated the danger of electronic devices completely
C、hasn’t formed his own opinion on this problem
D、regards it as unreasonable to exercise a total ban during flight
答案
A
解析
推理题。作者开篇指出“The biggest safety threat facing airlines today may not be a terrorist with a gun,but the man with the portable computer in business class.”可见作者对电磁干扰是非常关心的,对飞机上使用电子设备是非常忧虑的,因此也就不难推理出“作者赞成彻底禁止使用电子设备。”
转载请注明原文地址:https://jikaoti.com/ti/Mb3MFFFM
本试题收录于:
大学英语三级A级题库大学英语三级分类
0
大学英语三级A级
大学英语三级
相关试题推荐
A—DamagereportJ—AislesignB—ExhibithallK—BoothareaC—TradefairL—BoothnumberD—
A、Repairthecopymachine.B、Dothecopyingfortheman.C、Borrowacopymachine.D、Buysomepaperonline.D细节推断题。男士询问女士复印纸在哪里,女
A、Themanisinterviewingajobapplicant.B、Thewomanisworkingforabigcompany.C、Themanbelieveshehasabrightfuture.
A、It’sgoingtosnow.B、Ithasalreadysnowed.C、Themandoesn’tlikesnowing.D、Theweatherreportisright.BW:Ihearit’sgo
A、TotheScienceMuseum.B、TotheHistoryMuseum.C、TotheArtMuseum.D、TotheSpaceMuseum.AWheredoesthemanwanttogo?本题
______howtodealwiththetroubleofthecomputer,Martinhadtoaskhisbrotherforhelp.
Inordertoimproveourspeaking,whatshouldwedo?Weshould______toourclassmatesandEnglishteachersdaily.Whatshou
DinnerpartiesorbanquetsoccurfrequentlyinChinaamongthosewhocanaffordtoeatwell.Whentheguestsareusheredintoth
A--BuyerBehaviorB--MarketSegmentationC--TargetAudienceD--Adv
ThereisanoldsayinginEnglish:"Laughteristhebestmedicine".Untilrecently,fewpeopletookthesayingveryseriously.N
随机试题
(2020年临沂)车胤囊萤、孙康映雪、孙敬头悬梁、苏秦锥刺股的历史故事充分体现了()因素在人身心发展中的作用。
A、表面成像B、最小回声模式C、最大回声模式D、X线模式E、混合模式粗略显示肝癌
男,25岁。右膝关节和左足跟肿痛4周,曾有下半夜腰痛病史4年。查体:右膝肿胀压痛,浮髌征阳性,左侧4字征阳性,左侧骶髂关节压痛,左侧足跟肿胀压痛。对诊断最有价值的检查是()
下列对建立工作分解结构的几个步骤的排序,正确的是()①识别项目的主要组成部分;②识别每一可交付成果的组成单元;③确定所分解的每一单元是否可以“恰当”地估算费用和工期,能够独立控制;④证实分解的正确性。
股份有限公司为了使已发行的可转换债券尽快地实现转换,或者为了达到反兼并、反收购的目的,应采用的策略是( )。
下列个人所得应按“工资、薪金所得"项目征税的有()。
下列不属于承租人治安责任的是()。
A、B、C、D、C
Mostworksofartarekeptindoors,inagallery,privatehome,officebuilding,ormuseum.Onecategoryofartwork,fashionedt
Oldagehasalwaysbeenthoughtofastheworstagetobe;butitisnot【B1】____fortheoldtobeunhappy.Witholdageshould
最新回复
(
0
)