首页
登录
职称英语
[originaltext] Lionfish are known for their beauty and unusual look. But lio
[originaltext] Lionfish are known for their beauty and unusual look. But lio
游客
2024-03-09
11
管理
问题
Lionfish are known for their beauty and unusual look. But lionfish are also poisonous, with extremely long and separated spines to carry and shoot poison. The native environment for lionfish includes the South Pacific and Indian Ocean.
However, sea experts say lionfish were at some time released into the Atlantic Ocean, likely by people who had kept them in tanks. Lionfish are currently considered a great threat to coral reefs and related sea life in coastal waters of the southeastern United States and Caribbean.
Scientists say the fish is a top predator that competes for food and space with native fish in the area. Now there is a new solution for fighting back.
University researchers are developing an underwater robot to hunt down, kill and collect lionfish.
A student-led team at Worcester Polytechnic Institute in Massachusetts developed the robot. The team recently demonstrated the device and is continuing to test and make changes to it.
The team says that the robot is designed to recognize the lionfish, chase it and shoot the animal with a spear, which then separates from the robot and floats the fish to the surface for collection. Craig Putnam is a computer science professor at Worcester Polytechnic Institute and a director of the school’s Robotics Engineering Program. He says the robot was built to simplify the process of hunting down and collecting this aggressive fish.
Putnam said his team trained the robot system by showing it thousands of images of lionfish in different colours, from many directions and under different lighting conditions. The robot can correctly identify lionfish about 95% of the time, he added.
Questions 12 to 15 are based on the passage you have just heard.
12. What does the speaker say about lionfish?
13. What are lionfish doing to the Atlantic Ocean?
14. What can we learn about the team that developed the robot?
15. How did the team train the robot system to hunt down the lionfish?
选项
A、By putting it into a tank full of the fish.
B、By remote-controlling it to attack the fish.
C、By showing it thousands of images of the fish.
D、By equipping it with a sensing device.
答案
C
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3518232.html
相关试题推荐
[originaltext]Havingsuccessandbeingabletomeetone’sgoalsrequireskn
[originaltext]Havingsuccessandbeingabletomeetone’sgoalsrequireskn
[originaltext]Researchsubjectswhohavelivedwithlimitedhumancontacts
[originaltext]Fear,anger,hateandsadnessarefouremotionsthatcanaffe
[originaltext]Fear,anger,hateandsadnessarefouremotionsthatcanaffe
[originaltext]Fear,anger,hateandsadnessarefouremotionsthatcanaffe
[originaltext]Lionfishareknownfortheirbeautyandunusuallook.Butlio
[originaltext]ParticipantsinGirlsonRockgettoexploreforests,hikemo
[originaltext]ParticipantsinGirlsonRockgettoexploreforests,hikemo
[originaltext]W:Whatdoyouthinkaboutthemovie?M:Well.IthinkHa
随机试题
关于女性外生殖器的叙述,正确的是A.阴阜位于耻骨联合前面,皮下脂肪丰富,青春期该
患者,男,70岁,诊断为COPD并发呼吸衰竭。血气分析:PaO47mmHg,Pa
下列关于情景分析中的情景说法正确的有()。 Ⅰ.可从对市场风险要素的历史
某混凝土试块强度值不满足规范要求,但经法定检测单位对混凝土实体强度经过法定检测后
城市土地使用权出让的主要方式是()。A.协议 B.招标 C.拍
社会工作者在询问社区居民的公共服务需求时,大部分居民反映社区的停车位太少,希望社
为了掌握市场信息,有效安排生产运营,某乳品生产企业进行了市场调查和市场预测活动。
下列关于试运行的说法,错误的是()。A.试运行发生在工程管理权移交给业主后
土基达到最大干密度时所对应的含水量称为()A.最大含水量B.最小含水量C.最
下列凭证属于外来原始凭证的有()。A、付款收据 B、银行转来的各种结算凭证
最新回复
(
0
)