首页
登录
职称英语
In a little-known part of the counter-terrorism world, one of the most effec
In a little-known part of the counter-terrorism world, one of the most effec
游客
2023-10-19
17
管理
问题
In a little-known part of the counter-terrorism world, one of the most effective detection systems is a 600-pound animal【C1】________works for about 20 pounds of fish a day.
Since the 1960s, the United States and a handful of other countries have trained dolphins and sea lions to detect sea mines and swimmers, 【C2】________(recover) inert torpedoes (鱼雷) and to test objects used in Naval exercises.
Program officials estimate that the sea lions in the Marine Mammal Program【C3】________(recover) millions of dollars of U. S. Naval torpedoes and instrumentation【C4】________(drop)on the sea floor.
The US Navy kept its Marine Mammal Program a secret until the 1990s, and this spring CNN became one of only a handful of media outlets to see firsthand【C5】________ the program works.
The program has trained about 75 Pacific bottlenose dolphins, with natural bio-sonar (生物声呐) that track, better than any manmade device; and 35 California sea lions, with superb underwater eyesight.
Not only do these trained marine mammals track and retrieve millions of dollars in U. S. military eguipment, they are also helping to save lives.
The Navy won ’ t disclose whether the dolphins and sea lions have effectively intercepted(拦截) terrorist 【C6】________(attempt)to do harm to any U. S. facilities.
" Either way, it serves as a deterrent (遏制的) effect. " says Christian Harris, operations supervisor for the program. The mammals can be deployed via C-130 cargo aircraft to perform their missions anywhere in the world within 72 hours. They have been used in exercises from Alaska to Hawaii, 【C7】________(operate)in great temperature and environmental ranges. They also have the capability to operate off vessels.
Dolphins most recently were deployed in the Irag war, 【C8】________(perform) mine detection and clearance operations in the Persian Gulf【C9】________(ensure)safe passage for humanitarian ships 【C10】________(deliver)aid. Some of these Iraq war "veterans" are now back home, tasked with a new mission: guarding nuclear submarines in their homeports of Bremerton, Washington, and Groton, Connecticut. [br] 【C4】
选项
答案
dropped
解析
本题考查动词的过去分词充当后置定语的用法。此处的drop与instrumentation构成被动结构,故答案是dropped。
转载请注明原文地址:https://tihaiku.com/zcyy/3112063.html
相关试题推荐
Inalittle-knownpartofthecounter-terrorismworld,oneofthemosteffect
Inalittle-knownpartofthecounter-terrorismworld,oneofthemosteffect
Inalittle-knownpartofthecounter-terrorismworld,oneofthemosteffect
Inalittle-knownpartofthecounter-terrorismworld,oneofthemosteffect
Inalittle-knownpartofthecounter-terrorismworld,oneofthemosteffect
Inalittle-knownpartofthecounter-terrorismworld,oneofthemosteff
Inalittle-knownpartofthecounter-terrorismworld,oneofthemosteff
Inalittle-knownpartofthecounter-terrorismworld,oneofthemosteff
Inalittle-knownpartofthecounter-terrorismworld,oneofthemosteff
Inalittle-knownpartofthecounter-terrorismworld,oneofthemosteff
随机试题
Sincethelate1960s,anotherimageof"oneworld"hasedgeditswayintocon
[originaltext]Thomas:PamelaThomas.Goodmorning.Chang:Goodmorning.Thisis
[originaltext]W:EnglishLanguageCenter.MayIhelpyou?M:I’mcallingtofin
图书的面封应该印有( )等。A.书名 B.责任编辑名 C.著译者名 D.
阅读下面这首诗,完成题。 移居(其二) 陶渊明 春秋多佳日,登高赋新
蓄电池室的温度宜保持在()℃,最高不应超过35℃,并应通风良好。0~25
自我意识发展的第二飞跃期是( )A.幼儿期 B.童年期 C.青春期 D.
行政机关对某企业作出责令停产停业的处罚决定,该企业认为行政机关在作出行政处罚决定
(2018年真题)2021年5月,某建筑安装公司(增值税一般纳税人)以清包
监盘库存现金是证实资产负债表中所列库存现金是否存在的一项重要程序,还可以实现的审
最新回复
(
0
)