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、It is too expensive. B、It is not precise. C、It is dangerous. D、It is time-consuming. D讲话人在讲座最后提到,只要有可能,他们就会使用直升机来帮助他们绘制冰面地图和寻找
A、It is too expensive. B、It is not precise. C、It is dangerous. D、It is time-consuming. D讲话人在讲座最后提到,只要有可能,他们就会使用直升机来帮助他们绘制冰面地图和寻找
admin
2021-09-29
91
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、It is too expensive.
B、It is not precise.
C、It is dangerous.
D、It is time-consuming.
答案
D
解析
讲话人在讲座最后提到,只要有可能,他们就会使用直升机来帮助他们绘制冰面地图和寻找合适路线,但是这样做不仅相当困难也很耗时,因此答案为D)。
转载请注明原文地址:https://kaotiyun.com/show/kKD7777K
0
大学英语六级
相关试题推荐
A、Herbusinessskills.B、Herstudyexperienceabroad.C、Hercriticalthinkingability.D、Herculturalknowledge.B短文开篇谈到,Ashley在
A、ArealbookB、Acomputerfile.C、Ahandhelddevice.D、Apieceofpaper.B短文开头即对电子书下定义,指出它是以电脑文档的形式出现的,故B为答案。
Recentlythegovernmenthasissuedsomepreferentialpoliciestoencouragecollegestudentstoestablishtheirownbusiness.Whi
Here’sawarningfromhealthexperts:Sittingisdeadly.Scientistsareincreasinglywarningthatsittingforprolongedperiods
Howmuchproteindoyoureallyneed?A)Themarketingistempting:Getstrongermusclesandhealthierbodieswithminimaleff
PeerPressureHasaPositiveSide[A]Parentsofteenagersoftenviewtheirchildren’sfriendswithsomethinglikesuspicion
A、Improvehiscumulativegrade.B、Develophisreadingability.C、Sticktothetopicassigned.D、Listtheparametersfirst.C题干问的
A、Sellingdirecttothepublic.B、Sellingthroughtheirownchains.C、Sellingbyonlinestores.D、Sellingthroughsmallshops.C
A、Wrongoperation.B、Equipmentfailure.C、Weathercondition.D、Terroristattack.C
A、BecauseheusedtoliveinFrance.B、BecausehelikeschattingwithFrenchpeople.C、BecausehestudiesFrenchatschool.D、Be
随机试题
简述公共关系的活动内容。
Itisinterestingtoobservethewayin【61】childrensooftenreactagainsttheirparents’ideas,whileatthesametime【62】their
POX染色多呈阴性,PAS反应阳性产物为红色粗颗粒状或块状,底色不红,可能是:()
男、1l岁,10天来右腰胁部阵发性绞痛。体检:无水肿、血压正常,肾区叩击痛(一)。尿常规:尿蛋白(土),镜检红细胞满视野/HP。家族有肾结石病史进一步的检查是
中枢性呼吸衰竭的突出症状是()。
银行从业人员在接受监管者监管时应做到()。
WithournewQuickPaysystem,yourmonthlysubscriptionfeewillbedebitedautomaticallyfromthebankaccountofyour—一.
[2009年GRK真题]由工业垃圾掩埋带来的污染问题在中等发达国家中最为突出,而在发达国家与不发达国家中反而不突出。不发达国家是因为没有多少工业垃圾可以处理。发达国家或者是因为有效地减少了工业垃圾,或者是因为有效地处理了工业垃圾。H国是中等发达国家,因此,
Aperson’shomeisasmuchareflectionofhispersonalityastheclotheshewears,thefoodheeatsandthefriendswithwhomh
NewJerseySchoolDistrictEasesPressureonStudents,BaringanEthnicDivide[A]Thisfall,DavidAderhold,thechiefofa
最新回复
(
0
)