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
2011-06-29
36
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 (航空) industry, has recommended that all airlines ban (禁止) such devices from being used during "critical" stages of light, 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 a 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 aircraft 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 aircraft may be vulnerable (易受损的) to interference raises the risk that terrorists may use radio system 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 electromagnetic interference
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
文章全文并没有直接说出A项,依据文章开头,以及文章最后一段开头句可看出作者态度很明确。
转载请注明原文地址:https://kaotiyun.com/show/2r6O777K
0
考博英语
相关试题推荐
Readthearticleabouttheinterviewperformancebelow.ChoosethecorrectwordtofilleachgapfromA,BorC.Foreac
Lookatthechartbelow.Itshowstheturnoverandprofitofeightcompanies(A-H)inthreeyears.Whichcompanydoeseachsen
Someeducatorstrytoputstudentsofsimilarabilitiesintothesameclassbecausetheybelievethiskindof______groupingisa
IncomeinequalityintheUnitedStatesremainedrelativelystableforaperiodofnearlyfortyyears.Beginninginthe1970’s,h
PerhapsthemosttypicallyAmerican(types)offeaturemovie,thewestern,(hasbeen)aresurgence(in)popularity(inrecentye
Superstitionisadifficultquestion.WecannotquitesaythatsuperstitioninBritainisdead.Itshistoryisboth【76】longand
ThereisonquestionbutthatNewtonwasahighlycompetentMinisterofMint.Itwasmainlythroughhisefforts【1】theEnglishcu
Theprivatelifeofhavingeachindividualmakehisorherownchoiceofbeliefsandinterest______withouttheoverarchingpu
Accordingtothepassage,"scientificsubculture"means______.
随机试题
煤焦油瓷漆内缠带起层间加强作用。
企业的产品成本报表由________组成()
《炉中煤》一诗选自郭沫若的诗集《_______》。
计算机信息系统包括信息管理、信息检索和_______三个方面。
可引起血管扩张性肺门增大的疾病是
A.脉位的浮沉B.脉力的大小C.脉形的长短D.脉率的快慢E.脉律的齐否结脉与促脉的主要不同点,在于
某办公楼共3层,总建筑面积约6000m2。楼内安装自带电源非集中控制型消防应急照明和疏散指示系统,其中18W应急照明灯30只,3W应急照明灯8只,安全出口标志灯12只,单向悬挂应急标志灯16只,单向壁挂应急标志灯48只。应急照明配电箱安装在每一层的楼层配电
铁路民警小王巡逻时发现,某村一老大爷因为子女不尽赡养义务,想要卧轨自杀,下列现场处置措施恰当的有()。
《国家赔偿法》和《行政诉讼法》规定由国家承担赔偿责任的违法具体行政行为包括非法限制或剥夺公民人身自由以及()等侵犯公民、法人或其他组织财产权的行为。
Today,studentswhowanttolearnEnglishintheUShaveawidechoiceofcoursesandinstitutionsto【B1】_______.And,becauset
最新回复
(
0
)