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
55
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 is not the cause of the decrease in the oceanic salinity? ______
选项
A、Precipitation
B、Rain and snow
C、Formation of ice
D、Addition of water by rivers
答案
C
解析
本题采用排除法。根据第二段“The opposite of evaporation is precipitation…so that the salinity is decreased.”,“in areas of high rainfall”和“in coastal regions where rivers flow into the ocean”可以排除A、B、D项,答案选C。
转载请注明原文地址:https://kaotiyun.com/show/Wtgc777K
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
【2015农业银行】下列推论中最缺乏根据的是()。
【2015农业银行】3,10,31,94,(),850。
Iftherewerenohungryproblem,thepeopleoftheworld__________amuchhappiertimeintheirdailylife.
【招商银行】Itusedtobesostraightforward.Ateamofresearchersworkingtogetherinthelaboratorywouldsubmittheresultsofth
Whattheremoteareasneed_______educationtochildrenandwhatthechildrenneed______goodtextbooksatthemoment.
Technologyhascometotherescueofthosewhohatetobeoutoftouch.Firsttherewerebeepers;nowtherearecellularphones.T
Cross-culturalCommunicationinBusinessNegotiationsBusinessWeeklybyDr.RodSteinerNovember2006The
Itisnecessarythattheplan______beforeThursday.
You’rebusyfillingouttheapplicationformforapositionyoureallyneed;let’sassumeyouonceactuallycompletedacoupleo
Computersandmobilephones,thoughtheyareindeedmakingourlife______andmore______,havereducedtheneedforface-to-fac
随机试题
下列哪种疾病与输血无关
A.腺苷酸B.鸟苷酸C.胞苷酸D.尿苷酸E.胸苷酸
下列属于治疗风寒表证的非处方中成药是
原材料是影响混凝土强度的因素之一,其包含()。
在QC小组的组织项目评审中,评审内容有()。
第三次咨询:求助者:我按您的建议到精神科去查了一下,去了两家医院,他们都说我不是抑郁症。可是我不太相信,我在网上搜了一下抑郁症的表现,还买了一本精神病方面的书,里边说……心理咨询师:……我相信您现在确实承受着身体和心理上各种症状带来的痛
一个人的意志品质中如缺乏(),会造成遇事举棋不定、犹豫不决的情况。
关于特别行政区的法律地位,下列说法正确的是()
设x="123",Y=123,k="Y",表达式x+&k的值是()。
There’saschooloflinguisticsthatbelieveslanguagelearningbeginswitha"silentperiod".Justasbabieslearntoproduce
最新回复
(
0
)