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
A study published in the New England Journal of Medicine estimated that there are an average of 30 in-flight medical emergencies
A study published in the New England Journal of Medicine estimated that there are an average of 30 in-flight medical emergencies
admin
2017-02-01
9
问题
A study published in the New England Journal of Medicine estimated that there are an average of 30 in-flight medical emergencies on U.S. flights every day. Most of them are not grave; fainting, dizziness and hyperventilation(换气过度)are the most frequent complaints. But 13% of them—roughly four a day—are serious enough to require a pilot to change course. The most common of the serious emergencies include heart trouble(46%), strokes and other neurological problems(18%), and difficult breathing(6%).
Let’s face it: plane riders are stressful. For starters, cabin pressures at high altitudes are set at roughly what they would be if you lived at 5,000 to 8,000 feet above sea level. Most people can tolerate these pressures pretty easily, but passengers with heart disease may experience chest pains as a result of the reduced amount of oxygen flowing through their blood. Low pressure can also cause the air in body cavities to expand—as much as 30%. Again, most people won’t notice anything beyond mild stomach cramping. But if you’ve recently had an operation, your wound could open. And if a medical device has been implanted in your body—a splint, a tracheotomy(气管切开术)tube or a catheter(导管)—it could expand and cause injury.
Another common in-flight problem is deep venous thrombosis(深静脉血栓)—the so-called economy-class syndrome. When you sit too long in a cramped position, the blood in our legs tends to clot. Most people just get sore calves. But blood clots, left untreated, could travel to the lungs, causing breathing difficulties and even death. Such clots are readily prevented by keeping blood flowing; walk and stretch your legs when possible.
Whatever you do, don’t panic. Things are looking up on the in-flight-emergency front. Doctors who come to passengers’ aid used to worry about getting sued; their fears have lifted somewhat since the 1998 Aviation Medical Assistance Act gave them "good Samaritan" protection. And thanks to more recent legislation, flights with at least one attendant are starting to install emergency medical kits with automated defibrillators(电击去颤器)to treat heart attacks.
Are you still wondering if you are healthy enough to fly? If you can walk 150 ft. or climb a flight of stairs without getting winded, you’ll probably do just fine. Having a doctor close by doesn’t hurt, either.
Heart disease takes up about ______ of the in-flight medical emergencies on US flights.
选项
A、13%
B、46%
C、18%
D、6%
答案
D
解析
根据首段末句,心脏病占飞行中医疗重症的46%;而根据倒数第2句,重症在美国所有飞行中的医疗急症中占13%。结合这两句可知,心脏病应占所有急症中13%的46%,即约6%,因此选项D为本题答案。
转载请注明原文地址:https://kaotiyun.com/show/kKF7777K
0
大学英语六级
相关试题推荐
AslongastheAmericanlandwasnotcompletelysettledandtheelementsof【B1】______orderwerenotyetimposedonthefrontier,
Foryears,scientistshavebeenstudyinghowmusicaffectsthebrainanditsfunctions.Classicalmusic,【B1】______songsbyMoza
A、Allscientistsacceptitsdefinition.B、ItisasequenceofDNA.C、Peopleknowverylittleaboutit.D、Itisthesmallestunit
Inthe1980s,homeschoolingmadeacomebackintheU.S.whenreligiouslyconservativeparentsconvincedstatestoapproveandgi
A、CreatingAbstractExpressionism.B、Paintingpeopleandanimals.C、Sponsoringanewartmovement.D、Exploringrealisticmethods
A、HewaswonderingifthespeakerwasusedtolivinginAmerica.B、Hewastryingtoshowfriendlinesstothespeaker.C、Hewante
A、Helikedwritingwhenhewasachild.B、HeenjoyedreadingstoriesinReader’sDigest.C、HeusedtobeaneditorofReader’sD
A、EarlynewspapersinEngland.B、Theearlyhistoryofmagazines.C、ThelifeofDanielDefoe.D、Differencesbetweennewspapersan
随机试题
__________是Windows7操作系统组织和管理文件和文件夹的重要工具,它显示了计算机中所有文件、文件夹和驱动器的层次结构。
某项目第一年初投资1000万元,第二年初投资1500万元,第二年末开始有收益,每年末净收益为500万元,连续10年若该行业基准收盎率为10%,则该项目的静态投资回收期及净现值为()。
企业国有产权转让中涉及的职工安置、社会保险等有关费用,不得在评估作价之前从拟转让的国有净资产中先行扣除,也不得从转让价款中抵扣。()
在产业资本的三种职能形式中属于生产资本的职能有()。
在本届运动会上,所有参加自由泳比赛的运动员都参加了蛙泳比赛。再加入以下哪项陈述,可以推出“有些参加蝶泳比赛的运动员没有参加自由泳比赛”?()
一定时期内流通中所需的货币量与()。
在新的历史条件下,我们要深化对劳动价值论的认识,主要是要深化
如果函数f(x)的定义域为[1,2],则函数f(x)+f(x2)的定义域是[].
Therearemanymedicalproblemsinthemodernsociety.Oneofthemostalarmingmedicalproblemsintheworldisa【21】diseasena
GerardCroisetfromHollandcould"see"whatwasgoingonsomewhereelseandheusedhisgift(天赋)tohelpthepolicetofindmi
最新回复
(
0
)