首页
登录
职称英语
For centuries man dreamed of achieving vertical flight. Leonardo da Vinci co
For centuries man dreamed of achieving vertical flight. Leonardo da Vinci co
游客
2023-07-05
33
管理
问题
For centuries man dreamed of achieving vertical flight. Leonardo da Vinci conceived the first mechanical apparatus(仪器), which could carry a man【C1】______up, but this was only a design and was never tested.
The ancient dream was finally realized in 1940 when a Russian aeronautical(航空学的)【C2】______, piloted a strange-looking craft of steel tubing with a rotating fan on top. It rose awkwardly and vertically into the air from a standing start, hovered a few feet above the ground, went sideways and backwards, and then settled back to earth. That【C3】______was called a helicopter.
Imaginations were fired. People【C4】______that vertical flight transports would carry millions of passengers as do the airliners of today. Such fantastic expectations were not【C5】______. It excels in military missions,【C6】______troops, guns and strategic instruments where other aircraft cannot go. Corporations use them as airborne offices; many urban areas use them in police work, construction and logging companies【C7】______them in various advantageous ways. Engineers use them for site selection and surveying, and oil companies use them as the best way to make offshore and remote work stations accessible to crews and supplies. Any urgent【C8】______to a hard-to-get-to place is a likely task for a helicopter. Among their other【C9】______of uses, they deliver people across town, fly to and from airports,【C10】______in rescue work, and aid in the search for missing or wanted persons. With all these functions, the helicopter has now become an extremely versatile machine.
A)recognize B)vehicle C)caustic D)anticipated
E)actually F)fulfilled G)employ H)carrying
I)mission J)straight K)helpless L)engineer
M)assist N)balancing O)abundance [br] 【C10】
选项
答案
M
解析
这里是一系列动词短语对于直升机的用途进行举例。故应填入动词原形,意思是“在救援工作中……”,故选assist,意为“援助”。
转载请注明原文地址:https://tihaiku.com/zcyy/2811512.html
相关试题推荐
Forcenturiesmandreamedofachievingverticalflight.LeonardodaVincico
Forcenturiesmandreamedofachievingverticalflight.LeonardodaVincico
Forcenturiesmandreamedofachievingverticalflight.LeonardodaVincico
Forcenturiesmandreamedofachievingverticalflight.LeonardodaVincico
Forcenturiesmandreamedofachievingverticalflight.LeonardodaVincico
Tallmenaremorelikelytohavechildrenthantheirverticallychallengedf
Tallmenaremorelikelytohavechildrenthantheirverticallychallengedf
Forcenturiesmandreamedofachievingverticalflight.LeonardodaVincico
Forcenturiesmandreamedofachievingverticalflight.LeonardodaVincico
Forcenturiesmandreamedofachievingverticalflight.LeonardodaVincico
随机试题
Oneday,drought(干旱)maybeathingofthepastatleastincoastalcities.V
Whatismainlytalkedaboutinthenewsitem?[br][originaltext]Britainha
大型复杂项目,一般具有周期较长规模较大、目标构成复杂等特征,因此大型复杂项目的控
基地处理中深层搅拌桩,按设计图示尺寸以()计算。A.面积 B.体积 C.桩
在工人工作时间的研究分析中,有效工作时间包括()。A.基本工作时间 B.辅助
以下不属于医学道德修养的方法:A.学习医学伦理知识 B.躬亲实践 C.坚持内
功效是利水渗湿,泄热的药物是A.薏苡仁 B.滑石 C.茯苓 D.猪苓 E
棘阿米巴引起肉芽肿性阿米巴脑炎,病变中可查到A.滋养体和包囊同时存在B.只有包囊
某客户现年35岁,计划50岁退休,他想在今年年内贷款买房,那么他的还款期限不应超
腹痛规律为进食一疼痛一缓解 A.十二指肠球部溃疡B.胃溃疡C.肠易激综合征
最新回复
(
0
)