首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、Cruising in the Southern Ocean. B、Finding ways of avoiding collisions. C、Using satellites to map the White Continent. D、Keepin
A、Cruising in the Southern Ocean. B、Finding ways of avoiding collisions. C、Using satellites to map the White Continent. D、Keepin
admin
2021-09-29
49
问题
As we all know, cruising in the Southern Ocean isn’t always plain sailing. But as it is becoming important to find better ways of navigating safely and avoiding future collisions because of increasing visitor ships, the Antarctic Polar View project is using satellites to map the sea ice to help ships find the best way in the vast White Continent. There are very large lumps of heavy ice in the water which might look beautiful, but I believe you do not want to hit it with a ship, because if it happened your ship would be damaged. Therefore, navigating through it is an important problem, not only in terms of the safety of the ship, but also in terms of the speed of the ship, and the efficiency of the ship. You could have another choice—take a quicker and cheaper route rather than spending an excessive amount of time going through an area of very thick ice. The quickest way to travel is to clear water channels, but it is a difficult task to find these routes.
The area we’re dealing with is absolutely enormous. The only way of monitoring that area of ocean effectively is by using satellites. Therefore, we use a satellite named NVSAT, which is a satellite that collects information and picks up differences in ocean surface roughness and that helps us to see the difference between open water and the sea ice.
Radar allows the Antarctic team to see straight through the clouds down to the surface of the sea. With detailed images, it’s even possible to see cracks in the surface which can lead to dangerous ice falls. Wherever possible we would use helicopters quite a lot and put them up in the air to map the ice and look for where we might find what we call leads, you know, which are large areas of clear water that the ship might be able to move through. But it is certainly a much more difficult and time-consuming operation.
OK. That’s all for today’s talk. Next time, I will share with you more about this mapping project. Thank you!
Questions 23 to 25 are based on the recording you have just heard.
23.What is the Antarctic Polar View project about?
24.Which is a major function of the satellite named NVSAT?
25.What is the disadvantage of using helicopters to help map the ice?
选项
A、Cruising in the Southern Ocean.
B、Finding ways of avoiding collisions.
C、Using satellites to map the White Continent.
D、Keeping the safety of ships.
答案
C
解析
在讲座开头讲话人就谈到,Antarctic Polar View项目借助卫星绘制海冰地图,以帮助船只在浩瀚的白色大洲中找到最佳行进路线,因此答案为C)。
转载请注明原文地址:https://kaotiyun.com/show/VKD7777K
0
大学英语六级
相关试题推荐
Forthispart,youareallowed30minutestowriteashortessayentitledOnSchoolViolence.Youshouldwriteatleast150word
ExerciseIsGoodforYourBodyandYourMind[A]Thebenefitsofexercisearewidelyknown:ithelpsyoulivelongerandlowe
Thecloserelationshipbetweenpoetryandmusicscarcelyneedstobeargued.Bothareauralmodeswhichemployrhythm,rimeand
Maybeunemploymentisn’tsobadafterall.Anewstudysaysthat,incomenotwithstanding,havingademanding,unstableandthank
Here’sawarningfromhealthexperts:Sittingisdeadly.Scientistsareincreasinglywarningthatsittingforprolongedperiods
ProductionoftheAmbassador,thefirstcartobemadeinIndia,hasbeenhaltedbecauseoffallingdemand.ModelledontheMorr
Iamoneofthemanycitypeoplewhoarealwayssayingthatgiventhechoiceweshouldprefertoliveinthecountryawayfromt
Howmuchproteindoyoureallyneed?A)Themarketingistempting:Getstrongermusclesandhealthierbodieswithminimaleff
A、Fromwatchesontheirwrists.B、Fromwatchesoftherich.C、Fromclocksintheshops.D、Fromclocksinthesquares.D
Citiesaregettingsmarter,embeddedwithmoreInternet-connecteddevicesthataregeneratingdatainunbelievablevolumes.Yet
随机试题
美国心理学家麦考比和马丁将父母教养方式划分为四种。其中()父母很少给子女情感支持以及日常生活和学习上的关心,对孩子放任自流,以父母自己为中心,不考虑孩子的意见。
不同组织器官的碱性磷酸酶(ALP)由于合成修饰后的电泳迁移率不同,琼脂糖凝胶电泳可将其分为6种同工酶,从阳极到阴极的顺序为
关于B细胞,正确的说法是
工程建设投资估算指标是编制建设工程投资估算的依据,下面对投资估算指标表述正确的是()。
丙材料供应方应向( )申请代位权。丙材料供应方获得代位权后,可以向甲方索要( )万元。
简述问题解决的基本特点。
科技与道德之间的联系首先表现为科技总是要接受道德的评价。科技本身并不包含或显现其特定的道德价值。但是,由于科学技术活动是在人类社会中进行的,是人类社会活动及其成果的一部分,并且总是和人类的生存发展相联系。因此,科学技术本身也就是人类道德评价的对象。科学技术
设f(χ),φ(χ)在点χ=0某邻域内连续,且χ→0时,f(χ)是φ(χ)的高阶无穷小,则χ→0时,∫0χf(t)sintdt是∫0χtφ(t)dt的()无穷小.【】
TheInternetraisesmajorissuesandchallengesforeducation,notjustinChinabutallovertheworld.Yetitsimplycannotbe
Althoughcreditcardsarebecomingamore【B1】______partofthefinancialscene,theyarestill【B2】______withsuspicionbymany
最新回复
(
0
)