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
There are many reasons for tidal action; thus, tides are very complicated phenomenon involving many factors, all of which must b
There are many reasons for tidal action; thus, tides are very complicated phenomenon involving many factors, all of which must b
admin
2014-02-22
104
问题
There are many reasons for tidal action; thus, tides are very complicated phenomenon involving many factors, all of which must be considered to predict tidal action in any one place at any given time. The alternate rise and fall of the surface of the seas and the oceans is mainly caused by the attractive force of the moon. When the attraction is great, the tide is high; conversely, when the attraction is minimal, the tide is low. Between the high tide and the low tide is a period of a little over six hours, being called during its rise a flood tide, and during its fall an ebb (退潮) tide.
The sun also exerts its effect on the tide, being a little less than half as much as the moon, although its mass is so much greater. When the moon and the sun are horizontal, the highest tide occurs and when they are vertical the lowest tide takes place.
The wind also plays an important part in the modification of the normal rise and fall of the tides. Thus these factors affect each other, either detracting (转移) or adding to the attractive forces to add or subtract from the magnitude of the tide. One thing is certain: the tides move inexorably (不可阻挡) on, rising twice a day, shifting a little in time each day, and coutinually posing the problem of how to correctly predict their highs and lows.
选项
A、the attraction of the sun and the moon
B、the sun, the moon and the wind
C、the changing tides
D、the factors affecting the tides
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/Q2YK777K
本试题收录于:
大学英语三级A级题库大学英语三级分类
0
大学英语三级A级
大学英语三级
相关试题推荐
Peoplearefindinglessandlesstimeforrelaxingthemselvesbecause______.Inparagraph3,"suchareaction"refersbackto
Wheredoeshefindtheadvertisement?Whywillhechangehisjob?Becausehis2-yearcontract__________.
Theword"option"inthesecondparagraphcanbereplacedby________.Thephrase"makeadifference"inthelastparagraphmea
Menbelievethattheyarebetterandclevererthanwomenbecause______.Beforetheinventionofagriculture,menwentout____
A、Duringbusytimes.B、Atlunch.C、Atdinner.D、Ateitherbreakfastorlunch.C
How______youfeelaboutyesterday’sparty?
Howhardisittogetbeautifulhair?Beautifulhaircannotbetakenforgranted.Environmentalfactors,chemicaltreatments
Althoughhismajorisbiology,hisinterestisin(apply)______physics.
A、Beforethemeal.B、Duringthemeal.C、Whentheguestarrives.D、Whentheguestleaves.DW:Thankyouverymuchforsuchsplend
Onthehillaremapletrees______leaveshaveturnedred.
随机试题
了解社区居民对社区的看法和需要可以通过()方式。
患者,男性,55岁。在打球时出现剧烈头痛,疼痛难忍,来到医院就诊,查体患者有明显的脑膜刺激征。脑膜刺激征阳性最明显的是
消毒不耐热、不耐湿的物品宜使用
该项目整体拍卖时竞买人的最可能出价为()。假设拍卖的委托人为乙方,则下列情况中最合理的是()。
企业按规定将安全生产储备用于购建安全防护设备时,应借记“专项储备”科目,贷记“银行存款”科目。()
中国人有句俗话“师生如父子”,这句话的真正内涵是()。
某工厂因生产、销售烟花爆竹,被工商行政管理机关吊销了营业执照,该工厂厂长被公安机关治安拘留5日。可以同时设定这两种行政处罚的规范性文件是()。
不可抗力是指合同订立以后发生的当事人订立合同时不能预见、不能避免、人力不可控制的意外事故,导致不能履约或不能如期履约。下列选项中,不符合定义的是()。
甲为境外赌球的网站担任代理,开设个人微信公众号接受投注,情节严重,甲的行为应认定为()(2019年一专一第7题)
[*]
最新回复
(
0
)