首页
登录
职称英语
If the salinity (含盐量) ocean waters is analyzed, it is found to vary only sli
If the salinity (含盐量) ocean waters is analyzed, it is found to vary only sli
游客
2023-07-24
24
管理
问题
If the salinity (含盐量) ocean waters is analyzed, it is found to vary 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--conversion of liquid water to water vapor. In this manner, the salinity is increased, since the salts stay behind. If this is carried to the extreme, of course, white crystals of salt would be left behind.
The opposite of evaporation is precipitation (降水), such as rain, by which water is added to the ocean. Here the ocean is being diluted (稀释) 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 or runoff (形成地表水部分的降雨).
Normally, in tropical 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, off Antarctica, the densest water in the oceans 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 portions of the oceans of the world. [br] Which of the following processes will increase salinity of ocean waters?
选项
A、Evaporation.
B、Precipitation.
C、Melting.
D、Dilution.
答案
A
解析
只要明白第5句中的in this manner是指第4句巾的evaporation,不难做出正确选择。
转载请注明原文地址:https://tihaiku.com/zcyy/2863980.html
相关试题推荐
Ifthesalinity(含盐量)oceanwatersisanalyzed,itisfoundtovaryonlysli
Ifthesalinity(含盐量)oceanwatersisanalyzed,itisfoundtovaryonlysli
Ifthesalinity(含盐量)oceanwatersisanalyzed,itisfoundtovaryonlysli
Ifthesalinity(含盐量)oceanwatersisanalyzed,itisfoundtovaryonlysli
Ifthesalinity(含盐量)oceanwatersisanalyzed,itisfoundtovaryonlysli
Ifthesalinity(含盐量)ofoceanwatersisanalyzed,itisfoundtovaryonlysl
Ifthesalinity(含盐量)ofoceanwatersisanalyzed,itisfoundtovaryonlysl
Ifthesalinity(含盐量)ofoceanwatersisanalyzed,itisfoundtovaryonlysl
Ifthesalinity(含盐量)ofoceanwatersisanalyzed,itisfoundtovaryonlysl
Ifthesalinity(含盐量)ofoceanwatersisanalyzed,itisfoundtovaryonlysl
随机试题
DothefollowingstatementsagreewiththeinformationgiveninReadingPassage
[A]reserve[I]contend[B]incomparable[J]additional[C]minimize[K]exec
Atsomepointin2008,someone,probablyineitherAsiaorAfrica,madethe
A. B. C. D.
小儿常见汗证为A.大汗,战汗 B.自汗,盗汗 C.自汗,大汗 D.自汗,战
共用题干 Wateranditsimportancetohuman
(2021年真题)根据《期货市场客户开户管理规定》,下列表述中正确的是()
我国对市场中介组织的管理方式一般包括( )。A.立法管理 B.经济管理 C
根据“关于印发《建筑安装工程费用项目组成》的通知”(建标[2013]44号)的规
哪项支持胃的恶性溃疡A.溃疡呈圆形,椭圆形 B.边缘整齐,不隆起 C.底部较
最新回复
(
0
)