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
18
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] 【C3】
选项
答案
B
解析
这里需要名词作主语,且此名词可以被叫作直升机,可选的只有vehicle,意为“交通工具”。
转载请注明原文地址:https://tihaiku.com/zcyy/2811505.html
相关试题推荐
Forcenturiesmandreamedofachievingverticalflight.LeonardodaVincico
Forcenturiesmandreamedofachievingverticalflight.LeonardodaVincico
Forcenturiesmandreamedofachievingverticalflight.LeonardodaVincico
Tallmenaremorelikelytohavechildrenthantheirverticallychallengedf
Tallmenaremorelikelytohavechildrenthantheirverticallychallengedf
Tallmenaremorelikelytohavechildrenthantheirverticallychallengedf
Tallmenaremorelikelytohavechildrenthantheirverticallychallengedf
Forcenturiesmandreamedofachievingverticalflight.LeonardodaVincico
Forcenturiesmandreamedofachievingverticalflight.LeonardodaVincico
Forcenturiesmandreamedofachievingverticalflight.LeonardodaVincico
随机试题
In1959,Hawaiibecamethefiftiethstateintheunion(1)_____Congresssof
CourseName:ADBackup/RestoreandDisasterRecoveryPreparedby:Samu
A.基牙 B.具有一定应力缓冲作用 C.固定桥黏固于基牙上并与桥体相连的部分
传播过程的构成要素有( )。A.传播者 B.受传者 C.反馈 D.传播媒
进行购置设备与租赁设备的方案比选,需要分析设备技术风险、使用维修特点,其中对(
下列有关仲裁协议的效力说法正确的有()A、发生纠纷后,一方当事人既能向仲裁协议约
易引起急性肾衰竭的药物是A:肾上腺素 B:去甲肾上腺素 C:麻黄碱 D:多
银行在汽车贷款业务开展中是独立作业的,与其他行业、单位无关。()
根据金融法律制度的规定,下列关于非公开募集基金的表述中,正确的有()。A.各类
耻骨及坐骨支骨折造成尿道滴血,此骨折属于A.稳定骨折 B.青枝骨折 C.开放
最新回复
(
0
)