首页
登录
职称英语
The biggest safety threat facing airlines today may not be a terrorist with
The biggest safety threat facing airlines today may not be a terrorist with
游客
2024-05-12
10
管理
问题
The biggest safety threat facing airlines today may not be a terrorist with a gun, but the man with a portable computer in business class. In the last 15 years, pilots have reported well over 100 【B1】______that could have been caused by electromagnetic 【B2】______. The source of this interference remains 【B3】______, but increasingly, experts are pointing the blame at portable electronic 【B4】______such as portable computers, radio and cassette players and mobile telephones. RTCA, an organization which advises the aviation industry, has 【B5】______that all airlines ban such devices from being used during "【B6】______" 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 【B7】______airlines. And although some airlines 【B8】______ passengers from using such equipment during take-off and landing, 【B9】______
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 【B10】______
The fact that aircraft may be vulnerable to interference raises the risk that terrorists may use radio systems in order to damage navigation equipment. As worrying, though, 【B11】______ [br] 【B10】
选项
答案
they haven’t been able to reproduce these effects in a laboratory,they have no way of knowing whetherthe interference might be dangerous or not
解析
they can’t reproduce these effects in a lab,they don’t know if the interference might be dangerous
转载请注明原文地址:https://tihaiku.com/zcyy/3594955.html
相关试题推荐
Thebiggestsafetythreatfacingairlinestodaymaynotbeaterroristwith
Thebiggestsafetythreatfacingairlinestodaymaynotbeaterroristwith
Thebiggestsafetythreatfacingairlinestodaymaynotbeaterroristwith
Thebiggestsafetythreatfacingairlinestodaymaynotbeaterroristwith
Whenherealized______(是阴谋诡计诱使他了合同),hethreatenedtostartlegalproceedingst
Theairlines______.(对学生购买机票给予半价优惠).Incidentally,I’vealreadyboughtmyticke
Oneofthegreatestconcernsparentshavewhenfacinganinternationalmove
Oneofthegreatestconcernsparentshavewhenfacinganinternationalmove
Oneofthegreatestconcernsparentshavewhenfacinganinternationalmove
Oneofthegreatestconcernsparentshavewhenfacinganinternationalmove
随机试题
Livinginthedeserthasmanyproblems,__________(缺水并不是惟一的问题).ofwhichthelac
Asavolunteer,JohnApollosislosingweight—theold-fashionedway—byeating
TheMuseumofContemporary(当代的)Art(MOCA)hasstartedanewseriesofprograms
男性,40岁。受凉后发热、寒战、咳铁锈色痰3天。血WBC13.1×109/L。青
下列哪种肝炎是主要通过消化道传播的A.甲型肝炎 B.乙型肝炎 C.丙型肝炎
Askitrailisdenselypackedwithsnow.
《变电运维管理规定》:变电运维防高温管理中规定,重点检查加热驱潮成套装置超越设定
货币乘数就是银行所创造的货币量与法定准备率之比。()
下列关于公允价值的说法,不正确的是()。 A.公允价值是交易双方在公平交易中
架空线路电杆洞深是根据()决定的。A.吊线的类别 B.电杆的类别 C.现场
最新回复
(
0
)