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
专升本
Before a new airliner goes into service, every part of it is tested again and again. But there are two tests that are more impor
Before a new airliner goes into service, every part of it is tested again and again. But there are two tests that are more impor
admin
2018-07-18
43
问题
Before a new airliner goes into service, every part of it is tested again and again. But there are two tests that are more important than all the others. One of them is very strange and the other is very dangerous.
The first of these is called the "tank test". A modern airliner must fly at very high altitudes. Air must be pumped into the plane so that the passengers can breathe. The metal structure of the plane has to be very strong for this reason.(71)
When the plane is filled with air, or "pressured" , the air presses against the skin of the plane inside.
The pressure on a small window, for example, is like a huge foot that is trying to get out. If a small part of the plane were to crack, the plane would explode in the sky. This is what happened to the first Comets. In order to test the structure of the plane, it is lowered into a huge tank of water. Then it is filled with air. The pressure inside the plane is greater than it ever will be when it is in the air. Finally, there is an explosion. Engineers can discover which part of the plane has cracked. This part is made stronger.
The most dangerous test happens when the new plane is going through test flight in the air.(72)
The test pilot must find exactly what happens when all the engines are shut off at once.
He takes the plane up very high. Then he shuts the engines off, the plane begins to fall like a stone. It is the pilot’ s job to find out how he can get control of the plane again. These two tests are examples of how planes are made safe before they ever carry passengers.
A test flight is dangerous because the test pilot has to______.
选项
A、fly his plane at a very high altitude
B、secure a safe landing in a plane crash
C、find out how to handle a plane when its engines stop working
D、fix the damaged engines during the flight
答案
C
解析
事实细节题。由文章第三段第二句“The test pilot must find exactly what happens when all the engines are shut off at once.”及倒数第二句“It is the pilot’s job to find out how he can get control of the plane again.”可知,答案应选C。
转载请注明原文地址:https://kaotiyun.com/show/gCPC777K
本试题收录于:
英语题库普高专升本分类
0
英语
普高专升本
相关试题推荐
Thehousesinthisdistricthavebeensoldout,forthereisalargeandsupermarketnearly.
Parttimeeducation,thatis,attendingschoolatnightorforoneweekendamonth,tendstodragtheprocessoutovertimeand
Listeningisanextremelycomplexcommunicativeactivity.Inordertohaveabetterunderstanding,toanticipatewhatiscoming
Findingitdifficultto______totheclimateinthecity,hedecidedtomovetothenorth.
Whatshouldyouthinkaboutintryingtofindyourcareer?Youareprobablybetteratsomeschoolsubjectsthanothers.Thesema
OneBritishschoolisfindingthatallowingchildrentolistentomusicoreventohavetheTVonwhilestudyingishelpingimpr
MostAmericansdon’tliketogetadvicefrommembersoftheirfamily.Whentheyneedadvice,theydon’tusually【C1】______people
Towork______withthemachine,youmustreadtheinstructionscarefully.
A、Readingitsadsinthenewspapers.B、Callingitspersonneldepartment.C、Contactingitsmanager.D、Searchingitswebsite.D
在大会上许多专家呼吁政府制订一项全国人口计划以避免土地和水源的进一步污染。
随机试题
女性,32岁,1周来无明显原因出现皮肤散在出血点,伴牙龈出血。1天来出血加重。急诊化验:Plt8×109/L。临床诊断为特发性血小板减少性紫癜(ITP)。该患者可能出现的实验室检查结果是
物流经营者应根据客户特征,如配送产品特性、地理分布等,合理定位配送区域,同时对不同的配送区域可采取差别性的配送服务政策。()
中国游客成为世界“金主”“土豪”疯狂购物的新闻________,世界各国商业街专门挂出中文路标、配备中国导购更是________。可是,在美国地面上升国旗、唱国歌、大合影、狂购物,样样出新、件件破格________。如果把它归结成一场简单的爱国之旅,疯狂刷
下列叙述不正确的一项是:
J.Martin指出,自顶向下的全局规划可以划分为粗略的方式和【】的方式。
城域网的建设方案多种多样,但有一些共同的特点,下列()不是其中包括的。
CharacterAnalysisofShakespeareanPlaysI.Characteranalysis—characterevaluationasthebestwaytostarttheanalysisof
A、Thesparklingofeyes.B、Theopeningofmouth.C、Themovementofmuscles.D、Theblinkingofeyes.A录音提到达尔文和他的一名同事证实,人们很容易就能判断一
A、Changetheirsleeppatternstoadapttotheirnewbornbabies’.B、Sleepinthesameroombutnotinthesamebedastheirbabie
Theholidaysareatimeforeating:piesatThanksgiving,chocolatesforAdventandoverflowinggiftbasketsofcookiesandcand
最新回复
(
0
)