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
专升本
There are many reasons of the tidal action which is a very complicated phenomenon involving many factors all of which must be co
There are many reasons of the tidal action which is a very complicated phenomenon involving many factors all of which must be co
admin
2011-04-26
44
问题
There are many reasons of the tidal action which is a very complicated phenomenon involving many factors all of which must be considered to predict tide in any one place at any one time. The alternate rise and fall of the surface of the seas and the ocean is mainly caused by the attractive force of the moon alone. When the attraction is great, the tide is high; and conversely when the attraction is minimal, the tide is low. Between the high 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 tide.
The sun also exerts its effect on the tide, being a lit fie 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 high tide occurs and when they are vertical the lowest low tide takes place.
The wind also plays an important part in the modification of the normal rise and fall of the tide.
Thus these factors affect each other, either detracting or adding to the attractive forces to add or subtract from the weight of the tide.
But the tides still move inexorably on, rising twice a day, getting a little later each day and posing a problem of correctly predicting their heights and lows.
It can be concluded from this article that the attraction of the sun is ______.
选项
A、more than half that of the moon
B、more than that of the moon
C、more than twice that of the moon
D、half that of the moon
答案
D
解析
本题为细节推理题。第二段主题句明确指出尽管太阳自身的重量要比月球大得多,但其对于潮水所起到的作用连月球所起作用的一半还不到。由此可以推断太阳对潮水的引力只有月球引力的一半大小。
转载请注明原文地址:https://kaotiyun.com/show/EHqC777K
本试题收录于:
英语题库成考专升本分类
0
英语
成考专升本
相关试题推荐
Iwanderedthroughthecool______oftheforesttrees.
ItisgoingbesometimebeforeIcanrecovermyfull______(strong).
Whilemakingtremendousachievementsatcollege,Asian-Americanstudents______.Whydo"bothexplanations"(Line1,Para.3)w
Theseanimalsaremore______greencolour;theyalwaysmakeforthetagwithvariousshadesofgreen.
Ifinflationgetsanyworse,peoplewhohaveworkedalltheirlives(willendupwithnothing).
Atthattime,mostpeople______thenotion______thesunrevolvesaroundtheearth.
Accordingtothefirstparagraph,thetaskofeducationisfairlycomplicatedbecause______.theword"defeated"(Line2,Para
UnliketheirAmericanorEuropeancounterparts,carsalesmeninJapanworkhardtogetabuyer.Insteadoflyinglazilyarounds
AfterManhasdreamedaboutflyingforalongtime.MichaelMoshierisadreamer.HeinventedtheSoloTrek.TheSoloTrekh
Morethanthirtypeopleare______inthisevent.
随机试题
20世纪后半期,资本主义劳动立法在()的发展尤为突出。
阅读《宝黛吵架》中的一段文字,然后回答问题。谁知这个话传到宝玉黛玉二人耳内,他二人竟从来没有听见过“不是冤家不聚头”的这句俗话儿,如今忽然得了这句话,好似参禅的一般,都低头细嚼这句话的滋味儿,不觉的潸然泪下。虽然不曾见面,却一个在潇湘馆临风洒泪,
每1克组织的致病菌数一般需超过多少才导致感染
患者,男,45岁。动态心电图记录发现宽大畸形的波形,如图4—1—5所示,但患者全天生活日志未记录任何不适症状,图中宽大畸形的波形是
患者,女性,44岁,腰痛1个月余,B超提示,左肾实质内边界锐利的强回声团块,内部有短线状血管回声;患者1个月前无诱因出现腰痛,无其他不适,实验室检查未见异常。MRI检查如下图,可诊断为
赠与合同履行后,受赠人有特定忘恩行为时,赠与人有权撤销赠与合同。根据合同法律制度的规定,下列各项中,属于此类忘恩行为的有()。
()表现为被考评者上一个考评期内的评价结果。对其本考评期内的评价产生影响。
Becausethesalesrepresentativeswerelateleavingtheoffice,therewasvery______timeforustotalkbeforetheclientmeeti
Helenwasmuchkindertoheryoungestchildthanshewastotheothers,______,ofcourse,madetheothersjealous.
A、Togetmedicaltreatment.B、Toinquireabouthisresultsofthepaper.C、Tofindouttheexamschedule.D、Togetanextension
最新回复
(
0
)