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
2023-08-06
70
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/2901972.html
相关试题推荐
[originaltext]W:Thisweek’sprogramUpYourStreettakesyoutoHarrogate,as
[originaltext]W:Thisweek’sprogramUpYourStreettakesyoutoHarrogate,as
[originaltext]W:Thisweek’sprogramUpYourStreettakesyoutoHarrogate,as
[originaltext]Recentlyafive-yearstudywasconductedbytheCenterforCh
[originaltext]AsophomoreatColoradoStateUniversityfirsthadaproblem
[originaltext]AsophomoreatColoradoStateUniversityfirsthadaproblem
[originaltext]AsophomoreatColoradoStateUniversityfirsthadaproblem
[originaltext]AsophomoreatColoradoStateUniversityfirsthadaproblem
[originaltext]AsophomoreatColoradoStateUniversityfirsthadaproblem
[originaltext]YoucouldsaythatJosephCornellbecameanartistbecauseof
随机试题
Perhapsmorethananythingelse,scientistsareeagertofindoutifMartian
TheoriesofHistoryI.Howmuchweknowabouthistory?A.【T1】______existfo
Her_____asaneconomisthasbeenreinforcedbyhersuccessfulfightagainstinf
A. B. C. D.
如图所示为某三层办公楼卫生间部分排水系统图及平面图,试根据说明、系统图和平面图,
根据蛋白质中必需氨基酸含量,以含量最少的( )为1计算出其他的氨基酸的相应比值
物品的()表现为一种使用价值同另一种使用价值相交换的量的关系或比例。 A.使
在企业员工培训活动中,教学形式受()等因素的影响。A:教师 B:时间 C:教
缩减银行资产规模成为提高资本充足率最常用的手段之一。( )
下列关于持有待售类别分类的基本要求的说法中,正确的有()。A.根据类似交易中出售
最新回复
(
0
)