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
2013-01-25
44
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 bah during all flights. Currently, rules on using these devices are left up to individual airlines. And although some airlines prohibit passengers from using such e-quipment 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/0F1O777K
0
考博英语
相关试题推荐
Inthepast10years,thecompanyhasgradually_____allofitssmallerrivals.
Thedaywasbreakingandpeoplebegantogotoworksothemurdererwasunableto_____ofthebody.
DadCan’tHandleTheseToysAnyparentwithachild【C1】______theagesof3and11cantellyou【C2】______technologyhascrept
Afterseveralnucleardisasters,a________hasragedoverthesafetyofnuclearenergy.
Duringthepasttenorfifteenyears,agreatdealofattentionhasbeen【C1】______to"tellingitlikeitis,"or"lettingitallh
Pleaseputyouremptycigarettepacketsandpaperbagsinthe______binsprovided.
Perhapsallcriminalsshouldberequiredtocarrycardswhichread:Fragile;HandlewithCare.Itwillneverso,thesedaystogo
Standardusageincludethosewordsandexpressionsunderstood,used,andacceptedbyamajorityofthespeakersofalanguagein
Thephoneringsatwork.Youpickitupandthecaller【61】intoacomplaint:"IaskedforacataloguethreeweeksagoandIstill
随机试题
在用获利机会来评价绩效时,假设用证券的卢值衡量风险,由每单位风险获得的风险溢价可计算得到()。
车削薄壁工件时,一般尽量不用径向夹紧方法,最好应用轴向夹紧方法。()
牙石形成的时间为
A.出现各种出血症状,严重脱水,低蛋白血症B.呼吸麻痹,昏迷惊厥,瞳孔散大,对光反射消失C.急性肾功能衰竭,粒细胞减少,再生障碍性贫血D.呼吸表浅不规则,面色苍白发绀,瞳孔极度缩小呈针尖样E.四肢麻木,谵妄,痉挛,脑水肿,意识障碍,精神错乱罂粟
应在哪个阶段组成项目组赴现场进行实地调查、收集基础资料并进行估算的工作?[2007年第39题]
《农村土地承包法》规定,土地承包应当依照以下程序进行:本集体经济组织成员的村民会议选举产生承包工作小组;承包工作小组依照法律、法规的规定拟定并公布承包方案;依法召开本集体经济组织成员的村民会议,讨论通过承包方案;公开组织实施承包方案;签订承包合同。(
NASAisreleasingseveralimagestakenbytheHubbleSpaceTelescope,whichistheclosestyetlookattheredplanet.Altogethe
根据《物权法》的规定,下列民事主体可以设定浮动抵押权的是()。
E—R模型向关系模型转换时,三个实体之间多对多的联系m:n:p应该转换为一个独立的关系模式,且该关系模式的关键字由(49)组成。
A、Hehadaterriblevacation.B、Hewouldliketohavearest.C、Hewillnevergotravellingagain.D、Hehasrecoveredfromtired
最新回复
(
0
)