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
财经
When we analyze the salt salinity(盐浓度)of ocean waters, we find that it varies only slightly from place to place. Nevertheless, s
When we analyze the salt salinity(盐浓度)of ocean waters, we find that it varies only slightly from place to place. Nevertheless, s
admin
2015-02-08
60
问题
When we analyze the salt salinity(盐浓度)of ocean waters, we find that it varies only slightly from place to place. Nevertheless, some of these small changes are important. There are three basic processes that cause a change in oceanic salinity. One of these is the subtraction of water from the ocean by means of evaporation. In this manner, the salinity is increased, since the salt stays behind. If this is carried to the extreme, of course, white salt would be left behind; this, by the way, is how much of the table salt we use is actually obtained.
The opposite of evaporation is precipitation, such as rain, by which water is added to the ocean. Here the ocean is being diluted so that the salinity is decreased. This may occur in areas of high rainfall or in coastal regions where rivers flow into the ocean. Thus salinity may be increased by the subtraction of water by evaporation, or decreased by the addition of fresh water by precipitation.
Normally, in hot regions where the sun is very strong, the ocean salinity is somewhat higher than it is in other parts of the world where there is not as much evaporation. Similarly, in coastal regions where rivers dilute the sea, salinity is somewhat lower than in other oceanic areas.
A third process by which salinity may be altered is associated with the formation and melting of sea ice. When seawater is frozen, the dissolved materials are left behind. In this manner, seawater directly beneath freshly formed sea ice has a higher salinity than it did before the ice appeared. Of course, when this ice melts, it will tend to decrease the salinity of the surrounding water.
In the Weddell Sea, the densest water in the ocean is formed as a result of this freezing process , which increases the salinity of cold water. This heavy water sinks and is found in the deeper portion of the oceans of the world.
Which of the following statements is TRUE according to the passage? ______
选项
A、Oceanic salinity has great effect on sea life
B、Many factors combine to cause changes in oceanic salinity
C、The movement of the water is related to the amount of salt
D、The temperature of the water has much to do with the oceanic salinity
答案
D
解析
按照出题顺序,此题考查的是海水盐度变化的第三个原因。根据第四段可知,海水冻冰后,杂质析出,因此冰下的海水比冰冻前的盐度高;冰融化后,海水盐度又会降低。所以答案为D,即海水温度与盐度有很大关系。
转载请注明原文地址:https://kaotiyun.com/show/Xtgc777K
本试题收录于:
英语题库银行系统招聘考试分类
0
英语
银行系统招聘考试
相关试题推荐
Scienceisadominantthemeinourculture.Sinceittouchesalmosteverytacetofourlife.educatedpeopleneedatleastsomeac
Allcoupleshaveproblemsanddisagreements,soit’scriticalthattheylearnhowtocommunicateabouttheminawaythatwillbe
Themassmediaisabigpartofourculture,yetitcanalsobeahelper,adviserandteachertoouryounggeneration.Themassme
Themanager______theworkershowtoimprovetheprogramsince9a.m.
Whenweanalyzethesaltsalinity(盐浓度)ofoceanwaters,wefindthatitvariesonlyslightlyfromplacetoplace.Nevertheless,s
Thelargeramachineandthemorenumerousitsparts,thegreaterlikelihoodofabreakdownandthemoreexpensivetorepair.Wh
BankMortgageRatesWillFallSeveralofCanada’slargestbanks【K1】______todecreasetheirmortgagerates.RoyalBankrevea
Cultureisoneofthemostchallengingelementsoftheinternationalmarketplace.Thissystemoflearnedbehaviorpatternschara
Manypeoplebelievetheglarefromsnowcausessnow-blindness.Yet,darkglassesornot,theyfindthemselvessufferingfromheadac
Scienceisadominantthemeinourculture.Sinceittouchesalmosteveryfacetofourlife,educatedpeopleneedatleastsonlea
随机试题
为了克服企业管理中产生的信息延误现象,法约尔提出了【】
计算机病毒是计算机系统中一类隐藏在网络中的蓄意进行破坏的捣乱程序。()
四妙勇安汤治疗脱疽适用于:
A.乳腺内有多发胀痛、质韧之肿块B.乳房红肿、胀痛,内有触痛伴波动感的肿块C.乳腺内有单发、光滑、活动度大的肿物D.乳腺内有单发、质硬、活动度差的肿物E.乳腺内有单发囊性结节最可能提示为乳腺纤维腺瘤的是
对犬股动脉扩张作用最显著的活血化瘀药是
多尿、多饮、多食,体重减轻,常觉软弱、乏力,伴皮肤瘙痒、肢体麻木、外阴瘙痒,应该属于()的表现
某患者,女,19岁,从2楼跌下左腹部跌伤,左5、6、7肋骨骨折,脾破裂。入院时精神紧张。T38.4℃,面色苍白,肢端冰冷,脉搏细速,112次/分,BP132/98mmHg,尿量减少。该患者的休克状态应属于()
该梁第二阶段时的梁端剪力(设计值)最接近( )项数值。假定叠合梁的截面尺寸满足规范的要求,箍筋间距s=200mm,并已知截面有效高度为610mm,叠合构件的剪力设计值V=165.9kN。则叠合梁中箍筋的最小配箍面积与( )项数值最为接近。
物流信息指的是在物流活动进行中产生及使用的()。
“获指标逾期不买车”该受罚吗?既然无法保证市民在多长时间内参加摇号一定能摇到,那么就没有理由对那些________的市民予以惩罚,这是一个基本的公平。更何况,大到国家政策尚且可能________,普通家庭因为种种原因而临时改变购车计划,凭什么就得挨罚呢?填
最新回复
(
0
)