首页
财务会计
医药卫生
金融经济
考公考编
外语考试
学历提升
职称考试
建筑工程
IT考试
其他
登录
金融经济
When we analyze the salt salinity (盐浓度) of ocean waters, we find that it vari...
When we analyze the salt salinity (盐浓度) of ocean waters, we find that it vari...
admin
2020-12-24
48
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.
Grandma, who used to live upstairs, is now the voice on long distance, and the working parent is far too beaten down each day to spend evening relaxation time listening to the sandbox experience of an eager four-year-old.
So family conversation is as extinct as my old toys and parental questions such as "What have you been doing, Bobby? " have been replaced by "I 'm busy, go watch television.
And watch TV they do; count them by the millions.
But it's usually not children's television that children watch. Saturday morning, the children's hour, amounts to only about 8 percent of their weekly viewing.
Where are they to be found?Watching adult television, of course, from the Match Game in the morning, to the afternoon at General Hospital, from the muggings and battles on the evening news right through the family hour and past into Starsky and Hutch. That's where you find our kids, over five million of them, at 10 p.m., not fewer than a million until after midnight! All of this is done with parental permission.
Television, used well, can provide enriching experiences for our young people, but we must use it with some sense. When the carpet is clean, we turn off the vacuum cleaner. When the dishes are clean, the dishwasher turns itself off.
Not so the television, which is on from the sun in the morning to the moon at night and beyond!
Parents must exercise some control and show some concern about the cultural influence on the child when a program not intended for that child is viewed. Parents need to intervene. Nonintervention may be a wise policy in international affairs, but the results of parental nonintervention will not be wise at alL.
The working parent is not willing to listen to her (his) four-year-old child talking about his sandbox games because she (he) is _____
选项
A. boring
B. very tired
C. busy
D. angry
答案
C
解析
根据第一段“0ne of these is the subtraction of water from the ocean by means of evaporation In this nlallner,the salinity is increased”可知,答案为C,即海水蒸发可使盐度增加。
转载请注明原文地址:https://ti.zuoweng.com/ti/QVk8KKKQ
相关试题推荐
第4题A.酒精浓度升高B.味道变得太甜C.口感不再清爽D.香气有点儿腻
第3题A.喝白葡萄酒清爽开胃B.喝白葡萄酒能够减肥C.白葡萄酒酒精浓度高D.白葡萄酒储存较方便
一种溶液,蒸发掉一定量的水后,溶液的浓度为l0%;再蒸发掉同样多的水后,溶液的浓度变为l2%;第三次蒸发掉同样多的水后,溶液的浓度将变为多少?A.14%
Whenweanalyzethesaltsalinity(盐浓度)ofoceanwaters,wefindthatitvari...
在水槽里,装有浓度为13%的食盐水2000克,往这个水槽里倒人重600克和300克的A、B两种食盐水,水槽里食盐水的浓度变为10%。已知B种食盐水的浓度是...
甲杯中有浓度17%的溶液400克,乙杯中有浓度为23%的同种溶液600克,现在从甲、乙取出相同质量的溶液,把甲杯取出的倒入乙杯中,把乙杯取出的倒入甲杯中,...
Itcanbeknownfromthepassagethatincreaseinthesalinityofoceanwater...
根据下列内容,回答201-205题。 Whenweanalyzethesaltsalinity(盐浓度)ofoceanwaters,w...
实验台上摆放着两瓶糖水溶液,现在知道,A瓶中是浓度为10%的糖水180克,8瓶中是浓度为15%的糖水300克。现在从A、B两瓶中取出相同量的糖水,然后把从...
自动消毒剂有红、黄、白三根管子,红色管子以每秒5克的流量流出浓度为20%的酒精溶液,黄色管子以每秒4克的流量流出浓度为25%的酒精溶液,白色管子以每秒6克...
随机试题
房间隔缺损第2心音固定分裂产生的原理是
(),是指在结算日收券方通过债券登记托管结算机构得知付券方有履行义务所需的足额
损伤下述哪一结构,动物食欲增加而逐渐肥胖 A.下丘脑外侧区B.下丘脑腹内侧核
Long,longagotherewasnozero.Towritethenumbersixty-threepeoplewrot...
设{an}为正项数列,下列选项正确的是()。
31岁,GP,因"继发不孕2年"就诊,患者12岁月经初潮,周期28天,否认性传播疾病史,查体:子宫大小形态正常,宫骶韧带触痛结节。基础体温双相型,H...有关
切道斜度的大小与覆盖及覆牙合的关系是A:与覆盖呈反变关系,与覆牙合呈正变关系B:与覆盖呈反变关系,与覆牙合呈反变关系C:与覆盖呈正变关系,与覆牙合呈正变关系
城市功能分布中,CBD的中文含义是( )。A、中心商务区B、居住区C、商业区D、综合区
关于证据的客观性、关联性和合法性关系,下列哪一选项是正确的:A、客观性和关联性涉及的是刑事证据的形式B、合法性涉及的是证据的内容C、刑事证据的客观性、关联性
2014年末,某中学高三年级10个班的学生人数(单位:人)分别为: 41414242424242434446 这组数据的中位数和众数...