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
Explorer of the Extreme Deep Oceans cover more than two-thirds of our planet. Yet, just a small fraction of the underwater w
Explorer of the Extreme Deep Oceans cover more than two-thirds of our planet. Yet, just a small fraction of the underwater w
admin
2012-09-10
51
问题
Explorer of the Extreme Deep
Oceans cover more than two-thirds of our planet. Yet, just a small fraction of the underwater world has been explored. Now, Scientists at the Woods Hole Oceanographic Institution (WHOI) in Massachusetts are building an underwater vehicle hat will carry explorers as deep as 6, 500 meters (21, 320 feet). The new machine, known as a manned submersible or human-operated vehicle ( HOV) , will replace another one named Alvin which has an amazing record of discovery, playing a key role in various important and famous undersea expeditions. Alvin has been operating for 40 years but can go down only 4, 500 meters (14, 784 feet). It’s about time for an upgrade, WHOI researchers say.
Alvin was launched in 1964. Since then, Alvin has worked between 200 and 250 days a year, says Daniel Fornari, a marine geologist and director of the Deep Ocean Exploration Institute at WHOI. During its lifetime, Alvin has carried some 12, 000 people on a total of more than 3 , 000 dives. A newer, better versions of Alvin is bound to reveal even more surprises about a world that is still full of mysteries, Fornari says. It might also make the job of exploration a little easier. "We take so much for granted on land. " Fornari says. "We can walk around and see with our eyes how big things are. We can see colors, special arrangements. "
Size-wise, the new HOV will be similar to Alvin. It’ll be about 37 feet long. The setting area inside will be a small sphere, about 8 feet wide, like Alvin. It’ll carry a pilot and two passengers. It will be just as maneuverable. In most other ways, it will give passengers more opportunities to enjoy the view, for one thing. Alvin has only three windows, the new vehicle will have five, with more overlap so that the passengers and the pilot can see the same thing.
Alvin can go up and down at a rate of 30 meters every second, and its maximum speed is 2 knots (about 2. 3 miles per hour) , while the new vehicle will be able to ascend and descend at 44 meters per second. It’ll reach speeds of 3 knots, or 3. 5 miles per hour.
Which of the following statements is NOT a fact about Alvin?
选项
A、It can carry explorers as deep as 6, 500 meters.
B、It has played a key role in various important undersea expeditions
C、It was launched in the sixties of the twentieth century.
D、It has been used for more than 40 years.
答案
A
解析
文章第一段从第三句开始说,科学家正在研制一艘可将研究人员带到6500米深处的潜水装置,而它将替代Alvin,因为Alvin只能潜到4500米深处。A不是事实,所以是正确选择。
转载请注明原文地址:https://kaotiyun.com/show/KcLd777K
本试题收录于:
职称英语理工类A级题库职称英语分类
0
职称英语理工类A级
职称英语
相关试题推荐
AdaptationofLivingThingsCertainanimalsandplantsdevelopcharacteristicsthathelpthemcopewiththeirenvironmentbe
CanAddedCalciumHelpOlderBones?NewZealandresearcherssayguidelinesadvisingseniorstoconsumeatleast1,000to1,2
ScientistsDevelopWaysofDetectingHeartAttackGermanresearchershavecomeupwithanewgenerationofdefibrillators(除颤
WhichofthefollowingstatementsisNOTtrueoftheJapaneseconceptcar?WhatisthefunctionofthecameramentionedinPara
Thepassageindicatesthatancienttreatmentsforinjuryanddiseasewere______.Whatdothemajorityofthepeopleinthewor
ThePriceofIdleness1.ElectricaldevicessuchasCDplayers,vidoesandburglaralarmsareconsumingmoreenergyinstandbymo
ADon’tBeaPerfectionistBTheBenefitsofKnowingWhereWeWanttoGoCHardWorkPlusGoodLuckDTheOutcomesofOurEf
Inthelattercasetheoutcomecanbeseriousindeed.
FrancehaskeptintimatelinkswithitsformerAfricanterritories.
SmartWindowWindowsnotonlyletlightintocutdownanelectricityuseforlighting,butthelightcomingthroughthewin
随机试题
ToHaveaBetterConversationIntroductionToconversewellrequiresabalancebetween【T1】________Rulesforabet
对流运输指______或______,在______或______运输路线上做相对方向的运输。
汽车特约维修机构的设惫配置以中、小修为主。个别车辆集中区域可设1个承担大修的维修站。()
对冷冻机油凝固点的一般要求是:凝固点比蒸发温度低5~10℃。()
下列关于PPT文稿的目录的说法中,错误的是()
牡丹皮中具镇痛,解痉作用的成分为( )。
静脉溶栓治疗首选()。
李某为环境影响评价工程师,依照《环境影响评价工程师职业资格制度暂行规定》,其下列做法中正确的是()。
甲公司2015年8月对某生产线进行更新改造,该生产线的账面原值为380万元,已计提累计折旧50万元,已计提减值准备10万元。改良时发生相关支出共计180万元。被替换部分的账面价值为20万元。2015年10月工程交付使用,改良后该生产线预计使用年限为5年,预
从业人员在职业活动中应遵循的内在的道德准则是()。
最新回复
(
0
)