首页
试卷库
试题库
当前位置：
X题卡
>
所有题目
>
题目详情
菜粉蝶（其性别决定方式为ZW型）的体色和眼色分别由等位基因A/a和B/b控制，其中携带基因A的个体体色外显率为75%（杂合子中只有75%表现为显性）．用纯种菜粉蝶作为亲本进行杂交，杂交组合和实验结果...
查看本题答案
包含此试题的试卷
高三下学期生物《》真题及答案
点击查看
你可能感兴趣的试题
.下列关于自由组合规律遗传实验叙述中错误的是
两对相对性状分别由两对等位基因控制
两对等位基因位于一对同源染色体上
每一对等位基因的传递都遵循分离规律
F
2
中有9种基因型和4种表现型
家蚕的性别决定方式为ZW型已知黄足蚕幼虫腹足和尾足呈黄色结黄茧d白足蚕幼虫腹足和尾足呈白色结白茧d又
鹦鹉的性别决定方式为ZW型其羽色由位于Z.染色体上的3个复等位基因决定其中R.基因控制红色Y.基因控
复等位基因的出现体现了基因突变的随机性
控制该种鹦鹉羽色的基因组合共6种
3个复等位基因的显隐性关系为G.＞R.＞Y.
红羽雄性和黄羽雌性杂交，可根据羽色判断其子代的性别
在老鼠中基因C决定色素的形成其隐性等位基因c则为白化基因基因B决定黑色素的沉积其隐性等位基因b在纯合
若仅考虑老鼠体色有色和白化的遗传，则其遵循基因的分离定律
这两只栗色的双亲鼠的基因型均为CcAaBB
其后代白化鼠中纯合子占白化鼠的1/3
其后代栗色鼠中基因型有4种
下列关于孟德尔的两对相对性状的杂交实验的叙述正确的是
两对相对性状分别由两对等位基因控制
两对等位基因位于同一对同源染色体上
F
2
中有9种基因型、4种表现型
每一对等位基因的传递都遵循基因的分离定律
果蝇的性别决定方式为XY型其体色翅型眼色分别受一对等位基因控制已知灰身对黑身为显红眼对白眼为显．用
不能确定体色与眼色基因是否独立遗传
不能确定体色与翅型基因是否独立遗传
不能确定体色与眼色基因是否为伴X遗传
不能确定控制翅型的基因是否为伴X遗传
家蚕的性别决定方式为ZW型已知蚕体色正常基因T.与油质透明基因t是位于Z.染色体上的一对等位基因现用
1/2
1/4
0
3/4
下列说法正确的是①生物的性状是由基因控制的但生物的性别与基因无关②XY型性别决定的生物子代的性别由母
①③⑤
②④⑥
①②④
③⑤⑥
家蚕雌雄幼蚕中均有体色正常和体色油质透明的个体雌雄蚕中均有结绿色茧和结白色茧的个体．已知幼蚕体色正
家蚕的性别决定方式为ZW型已知黄足蚕幼虫腹足和尾足呈黄色结黄茧d白足蚕幼虫腹足和尾足呈白色结白茧d又
全部的哺乳类动物为XY型类型性决定家禽几乎为ZW型类型性决定后缢的性别是由环境决定的果蝇的性别由决定
瓢虫鞘翅色斑由SSS三个复等位基因决定这三个复等位基因可组成6种基因型6种表型其中纯合基因型为3种杂
鸡的性别决定方式是ZW型当显性基因A存在时鸡的羽毛可表现为芦花斑纹或非芦花斑纹而基因型aa的鸡总是白
菜粉蝶是二倍体生物含50条染色体ZZ为雄性ZW为雌性．1正常情况下菜粉蝶减数分裂过程中产生的次级卵母
从性遗传是指由常染色体上基因控制的性状在表现型上受个体性别影响的现象．二倍体昆虫菜粉蝶中ZZ为雄性
下列有关性别决定的叙述正确的是
性染色体上的基因都用于决定性别
X、Y染色体相互之间不存在等位基因
含X染色体的配子是雌配子，含Y染色体的配子是雄配子
生物界除了XY、ZW的性别决定方式，还有其它方式
菜粉蝶雌性个体的性染色体组成为ZW雄性则为ZZ．其体色由一对等位基因Aa控制雄性个体的体色有黄色和
10.00分生物的性别决定方式有多种其中由染色体形态决定性别这种决定方式中又有XY型和ZW型之分X
某种昆虫为ZW型性别决定其眼色性状受性染色体上的一对等位基因控制且红眼对白眼为显性．其体色性状受常
人的眼色是由位于常染色体上两对独立遗传的等位基因共同决定的随显性基因数目由多变少人的眼色可分别表现为
热门试题
更多
如图所示轻质杠杆OA中点悬挂重为100N的物体在A端施加一竖直向上的力F杠杆在水平位置平衡则力F的大小是保持F的方向不变将杠杆从A位置匀速提升到B位置的过程中力F将选填“变大”“变小”或“不变”下同．若本实验中F的方向始终与棒垂直则F将．
12.5分＞FROMTHEEDITOR DEAR READERS. Happybirthdaytous!TIMEzine'sfirse期刊cameoutonMarch31923.Sure96isn'tthemostspecialbirthdaycomparingwiththe100thbirthday.Butwetakeeveryopportunity机会tocelebrate.TIMEforKidscamealongjustalittlebitlaterin1995.Soonwewillhaveour25thbirthday！ WehaverunourKidReporterprogramformanyyears.Manykidswhotookpartintheprogramasareporterareprofessionaljournalist职业记者now.WhiletheywereworkingwithTFKtheycaughtsomegreatopportunitieslikeinterviewingpoliticalleadersfamouspeopleOlympicathletesscientistsandmore. Doyoudreamofbeingareporter?Comeandjoinus!OnMarch15wewillholdourannual一年一度的competitiontofindournextgroupofTIMEforKidsReporters.EditorsfromTFKwillchoose10beststudents. Ihopeyouwillhaveachancetoreportforourmagazinesandwebsitesduringthe2019﹣2020schoolyear. Allthebest 1AccordingtothepassageTIMEforKidswillhaveitsbirthday. A.96th B.100th C.23rd D.25th 2WhatwilleditorsfromTFKdointheirannualcompetition? A.Takepartintheprogram. B.Interviewpoliticalleaders. C.Choose10beststudents. D.Reportfortheirmagazines. 3HowlongwillthenextgroupofreportersworkwithTFK? A.Halfayear. B.Oneyear. C.Twoyears. D.Threeyears. 4AndreaDelbancois. A.areader B.aneditor C.areporter D.astudent 5Youcanfindthepassagein. A.awebsite B.abook C.anovel D.adiary
如图所示的电路中小灯泡上标有“6V3.6W”字样滑动变阻器R1的最大电阻为40Ω当只闭合SS2滑动变阻器的滑片P在中点时小灯泡正常发光当所有开关都闭合滑片滑到A端时A1A2的示数之比是31灯的电阻保持不变．求 1小灯泡正常发光时的电流 2电源电压 3当只闭合SS2滑动变阻器的滑片P在A端时小灯泡两端的实际电压． 4小灯泡消耗的最小电功率不能为0．
15分本卷完形填空A文章讨论了许多年轻人很在意自己外貌的问题文章的最后指出Weneedtojudgepeoplebywhattheydonotwhattheylooklike..你同意文章最后提出的观点吗?对此观点你有何看法?请根据下面提示写一篇英语短文谈谈你的看法阐述理由并举例说明. 写作要点 1.Youropinionagree/disagree/… 2.Reasonslookspersonality品性ability… 3.Anexampleyourself/apersonaroundyou/afamousperson/… 要求 1.短文应包括提示中所有的写作要点条理清楚行文连贯可适当发挥 2.如举自己或身边的人作为例子不能出现真实的人名和地名 3.词数不少于80.
如图所示请根据通电螺线管周围磁感线的方向判断电源的+﹣极和小磁针的N极并在图中标出．
如图1是小明“测量小灯泡电功率”的电路灯泡的额定电压为2.5V电阻约10Ω电源电压恒为6V． 1为保证实验顺利进行应选择下列哪个滑动变阻器接入电路中 A.10Ω2A B.20Ω1A 2闭合开关调节滑动变阻器滑片P发现电压表示数为2.7V要使灯泡正常发光下一步操作应该是将滑片P向填“左”或“右”端移动 3实验数据如表 分析实验数据可知 ①第5次实验灯泡熄灭的原因是 ②小灯泡断电后的电阻可能是 A.0ΩB.2ΩC.10ΩD.11Ω 4完成上述实验后小明向老师又要了一个已知阻值为R0的定值电阻和一个单刀双掷开关设计了如图2所示的电路测量灯泡的额定功率．请完成实验步骤 ①闭合开关S1将S2拨到触点选填“1”或“2”移动滑片P使电压表的示数为V ②再将开关S2拨到触点选填“1”或“2”保持滑片P的位置不动读出电压表的示数U ③灯泡额定功率的表达式为P额＝用已知量和测量量符号表示．
如图所示的电路中电源电压保持不变闭合开关S将滑动变阻器的滑片P向左移动下列说法中正确的是
10分Itisagreatthingtohelpothers.Firstyoucanlearnnewthings.Seconditcanalsomakeyoufeelgood. Howcanyoudoit?Helpingthroughcharities慈善团体isagoodidea.Charitiesareorganizations组织thathelpothers.September5istheInternationalDayofCharity. Youcanhelpcharitiesbygivingyourtimegivingmoneyorgivingthingsthatyouown. ●Volunteering Volunteeringistogivetimetohelpotherswithoutpay.Somewaysofvolunteeringare ☆visitingoldpeopletotalktothemorhelpthem ☆walkingdogsatananimalshelter收容所 ☆cleaningupapark ☆helpingsomechildren.Youcanteachthechildrenwithoutlifeskillshowtotakecareofthemselves. ●Fundraising Fundraisingistocollectorproducemoneytoacharitytohelpothers.Somewaysoffundraisingare ☆makingcakesorbiscuitstosell ☆doingsponsored有赞助的activities.Forexamplefamiliesandfriendsgiveyoumoneyifyoufinishalongwalk. ●Donating Donatingistogiveyourthingstoacharitytohelpothers.Somewaysofdonating are ☆givingyouroldtoysorclothestoacharitythathelpssickchildrenorpoorpeople ☆givingyouroldbookstoalibrary. Sowhatcanyoudotohelpothers? 1Whyisitagreatthingtohelpothers?atleastone 2WhichdayistheInternationalDayofCharity? 3TranslatetheunderlinedsentenceintoChinese. 4Marymakessomemoneybydrawingpictures.Shegivesthemoneytoacharity.Itisawayof.填写序号A或B或C A.volunteering B.fuundraIsil C.donating 5Giveapropertitletothepassage.
在“测量小灯泡的电功率”的实验中小灯泡的额定电压为“2.5V”正常发光时的电阻约为8Ω． 1在图甲中有一根导线未连接请用笔画线代替导线将电路连接完整 2闭合开关后小灯泡不亮电流表没有示数电压表有较大的示数经检查导线连接完好则电路故障可能是小灯泡发生了选填“短路”或“断路” 3移动滑片P到某一位置时电压表示数如图乙所示为V此时要测量小灯泡的额定功率应将滑片P向选填“左”或“右”端移动 4移动滑片P记下多组对应的电压表和电流表的示数并绘制成图丙所示的I﹣U图象由图象可计算出小灯泡的额定功率是W． 5完成上述测量后不用电压表用如图丁所示的电路也可测量已知额定电流的小灯泡的额定功率已知小灯泡的额定电流为I额定值电阻的阻值为R0实验步骤如下请补充完整 ① ②闭合开关SS1断开开关S2记录下此时电流表的示数为I ③小灯泡的额定功率的表达式为P额＝W．
核电站是利用核选填“聚变”或“裂变”来发电核能是选填“可再生”或“不可再生”能源．
6分ThisistheschooltimetableofClassOneGradeThreeSunshineSchoolonMonday. 1Whattimedoesthedramalessonbegin? A.At800am. B.At1000am. C.At100pm. D.At200pm. 2Howlongdoesthesciencehomeworktake? A.Atleast90minutes. B.About20minutes. C.Morethan60minutes. D.About40minutes. 3WhichofthefollowingisTRUEaccordingtothetimetable? A.Studentsalwaystaketheirpaintinglessonsoutdoors. B.Boystudentswillplayashortsoccermatchthisweek. C.Studentswilluseskillsinrealgamesinthetheorylesson. D.Studentslearnhowtofixcomputersinthetechnologylesson.
1分PeterspokesothatIcouldhardlyhearhim. A.loudly B.quietly C.clearly D.patiently
15分Bodyimage﹣thewaypeoplefeelabouttheirlooks﹣isabigproblemformanyyoungpeopletoday.Accordingtoa1morethanhalftheteenagegirlsintheUSAthink2shouldbeonadiet节食andalmostoneinfiveteenageboysare3abouttheirbodiesandtheirweight. Butwhat'sthecause?Inthestudymanyblame责备themedia媒体.TurnontheTVandyou'll4seebeautifulmodelshandsomeactorsandfitsportsstars.5amagazineoranewspaperlookthroughtheInternetandit'susually6. Manyyoungpeoplefeelpressureto7theseperfectpeople.Butformostthisisjustnotpossible.IntheUSAtheaverage平均的womanis163cmtallandweighs64kilos8theaveragemodelis180cmtallandweighs53kilos. Whenpeopledon'tlookthewaymany9peoplelooktheymaybecomelessconfident.Somestopeating10inordertoloseweight.Studentscanlosesomuchconfidencethattheystartto11takingpartinclassroomactivitiesatschool. Bodyimageproblemsdon't12aswegetoldereither.IntheUKforexamplewomenover50spendmoremoneyoncosmetics化妆品thananyother13group.Oldermenspendalotofmoneytryingto14hairloss损失. Isthereasolutiontotheproblem?A2016studyintheUKsuggestedthatbodyimagelessonsshouldbeprovidedin15.Othersbelieveit'saproblemthatallofsocietyneedstodealwith.AsMeaghanRamseysaysWeneedtojudge批判peoplebywhattheydonotwhattheylooklike. 1A.newspaper B.magazine C.study D.book 2A.we B.they C.you D.she 3A.confident B.sure C.worried D.happy 4A.probably B.hardly C.never D.finally 5A.Get B.Open C.Take D.Find 6A.thesame B.different C.special D.interesting 7A.lookafter B.lookfor C.lookat D.looklike 8A.because B.although C.but D.of 9A.kind B.strong C.young D.famous 10A.early B.properly C.slowly D.carefully 11A.enjoy B.stop C.finish D.forget 12A.come B.continue C.disappear D.happen 13A.age B.job C.hobby D.man 14A.make B.avoid C.refuse D.protect 15A.supermarkets B.streets C.parks D.schools
2016年8月16日我国用长征二号丁运载火箭成功将世界首颗量子科学实验卫星简称“量子卫星”“墨子号”发射升空如图所示火箭在加速上升的过程中
8分 C Playingvideogamesandgettingmoneyforitseemslikeadreamjobformanyoftoday'steenagers.Butisitallfunandgames? Bigbusiness Proprofessionalgamingiscertainlybigbusiness.In2017thereweremorethan3000gamingcompetitionsandover10000professionalplayersworldwide.Alargenumberofpeoplewatchtheircompetitionsonlineandsuccessfulgamerscangetmorethan1000000dollarsfromprizemoneyandads.Theindustryisclearlythriving. Whatittakes Becomingaprofessionalisnotjustaboutbeinggoodatplayinggames﹣italsotakesalotofhardwork.Someprogamerspracticeforfourteenhoursaday.Youneedtospendmuchtimeandputallyoureffortstoitsaysex﹣gamerGeorge. Notallfunandgames Itcanbeadifficultjobaswell.Stressisabigproblemforgamers.Tirednessisanotherandinjuries受伤arecommon.TopplayerHaiLamhadwrist手腕problemsafteryearsofprogaming.Careers生涯areshortandmanygamersretire退休beforetheyare30andtrytofindanotherjob. Howeverthebadpointsprobablywon'tchangethedreamsofmanyteenagegamers.AndangryparentsarestilllikelytoheartheexcuseButI'mjustpracticingformyfuturejob! 1Howmanyprofessionalplayersweretherearoundtheworldin2017? A.130000. B.Morethan3000. C.Over1000000. D.Morethan10000. 2WhatdoestheunderlinedwordthrivinginParagraph2mean? A.Gettingworse. B.Doingwell. C.Developingslowly. D.Changingquickly. 3Whatcanweinferfromthelastsentenceofthepassage? A.Childrenareangrywiththeirparents. B.Teenagerspracticegamesfortheirfuturejobs. C.Someteenagersarecrazyaboutplayinggames. D.Parentsstoptheirchildrenplayinggamessuccessfully. 4What'sthemainideaofthepassage? A.Progamingisn'tallfunandgames. B.Thecareerasaprogamerdoesn'tlastlong. C.Beingaprogamerisagoodchoiceforteenagers. D.Beingaprogamerisaneasywaytomakemoney.
下列物态变化事例中属于液化的是
如图所示磁悬浮地球仪应用了选填“同”或“异”名磁极相互排斥的规律．
下列关于导体电阻的说法中正确的是
下列与压强有关的事例的解释中正确的是
1分﹣Whatdoyouthinkoftheband'sperformance? ﹣Itcouldbe.Ithinkthey'refeelingverynervous. A.good B.better C.bad D.worse
12.5分WhenReginaldJohnstonaBritishscholar学者firstwalkedintotheForbiddenCityin1919mostpalacesweren'tallowedtovisit.ButacenturylaterwhenthePeople'sRepublicofChinaistocelebrateits70thfoundinganniversary周年纪念inOctoberthe599year﹣oldpalacecomplex宫殿群becomestheworld'sbusiestmuseum. Opentothepublic Intheolddaysordinarypeoplecouldonlyimaginewhatitlookedlikeinside.WhenthePalaceMuseumwasfoundedin1925.thepubliccouldgointothepalaces.Now80%ofthetotalareaofthemuseumisopentothepublicanditwillincreaseto85%in2025. Embracing拥抱theworld Itfeltlikeyouwerehitbyhundredsofyearsofhistory.ChristopherAllenfromBritainsaidIbegintoloveitshistoryandculture. TheForbiddenCityisbecomingmoreopenandfriendlytovisitors.Itattractedabout3.5millionvisitorsfromabroadand9overseas海外的exhibitionswereheldin2018ThePalaceMuseumexhibitionbecomesaculturalphenomenon文化现象everywhereitgoes. Attractingtheyouth OnthePalaceMuseumsonlinestoreonTaodaoyoucanfindmorethan10000culturalproducts.Theoneswithcuteandhumorouspicturesofemperorsareverypopular. Somefavouriteproductsalsogooffline.ForexampletheKangxiEmperor'sFavouriteChocolatethemostpopulardrinkalwayshaspeopleliningup排队togetataste. AsachildXuJingoftenrodeabikeinfrontoftheMeridianGate午门.IhadlittlememoryofthemuseumthenbutnowIammorewillingtovisititafterwatchingseveralpopularTVshowsaboutthemuseumshesaid. 1Thecurrentsituation##oftheForbiddenCityisthat. A.ithasbecometheworld'sbusiestmuseum B.mostpalacesarestillnotallowedtovisit C.itisclosedtoalltheworldexceptlocalpeople D.itisnotopenbecausetherearetoomanyexhibits 2ThePalaceMuseumhasbeenopentothepublicforyears. A.70 B.94 C.100 D.599 3WhichisNOTthereasonthattheForbiddenCityattractsmorevisitorsfromabroad? A.ForeignersarehitbyhundredsofyearsofChinesehistory. B.TheForbiddenCityisbecomingmoreopenandfriendlytovisitors. C.TheticketpriceoftheForbiddenCityisthelowest. D.ThePalaceMuseumexhibitionbecomesaculturalphenomenoneverywhereitgoes. 4AccordingtothelastparttheyouthknowmoreaboutthePalaceMuseummainlyThrough. a.theonlinestoreonTaodao b.offlinestores c.historybooks d.popularTVshows A.abd B.abc C.bcd D.acd 5WhichisRIGHTaccordingtothepassage? A.ThePalaceMuseumbecomesworldfamousinashortperiod. B.VisitorscanleavetheirfootprintsHEineachareaofthemuseum. C.Allthenativepeoplewerewillingtovisitthemuseumwhentheywerekids. D.WiththedevelopmentofChinathePalaceMuseumopensitsarmsandwelcomesthevisitorsfromallaroundtheworld.
“瓦特”是下列哪个物理量的单位
在探究“平面镜成像特点”的实验中 1实验时选择玻璃板代替平面镜进行实验的原因是． 2在竖直的玻璃板前点燃蜡烛A蜡烛B在玻璃板后面移动人眼一直在玻璃板 选填“前”或“后”观察直至蜡烛B与蜡烛A的像完全重合．在比较物与像的大小关系时蜡烛B替代的是选填“蜡烛A”或“蜡烛A的像”． 3实验时将蜡烛A逐渐靠近玻璃板时它的像的大小选填“变大”“变小”或“不变”． 4移去蜡烛B在其原来位置上放置一块光屏光屏上选填“能”或“不能”呈现蜡烛的像．
1分Thefilmseemsinterestingweallwanttoseeit. A.and B.but C.unless D.if
电动汽车越来越多地进入普通家庭电动汽车的核心部件是电动机下面图中能正确反映电动机工作原理的是
15分阅读下面的短文根据短文内容从下面方框内所给11个词中选择10个意义相符的 词必要时透行词形变化填入空白处每空一词. Withitsblack﹣whitecoattheanimalisoneofthemostprecious珍贵的animalsintheworld.ItisnativetoChinaproudlycalledthe1treasure.2nameisPanda.ThenameofPandanowrefersto指的是thegiantpanda. InChina3theGreatWallandtheTerracottaArmythegiantpandaalsoattractstheworld﹣widetourists Asthemostfamousanimalof4thegiantpandaappearsinthelogo标志oftheWorldWildlifeFundforNatureWWF.Italsohas5chancesthanotheranimalstobethemascot吉祥物ofinternationalgamesheldinChina.AnditshowsupasanactoronthebigscreensuchasKungFuPanda. Thegiantpandaisregardedasthesymbolofpeace.InJapanese6records.theTangDynastysentacoupleofbearsandseventypiecesoffurasnationalgiftstoJapan.The7bearsweregiantpandas. Onefemalepandausuallyhas8onebabyanditisnoteasyforwildpandastohavetwinsanyway.Ifyouwanttoseethemyou'dbettergotoChengdu.Why?9themainbreeding繁育centerswerebuiltaroundthisareaCertainlysomecity10alsohavegiantpandassuchasBeijingZoo.ChongqingZooetc. Thegiantpandasaresolovelycreatures生物.MoreandmorepeoplebecomefansofThem.
如图所示电路电源电压不变小灯泡标有“6V3W“字样闭合开关后当滑片P移至某一位置时小灯泡恰好正常发光此时滑动变阻器消耗的功率为P1当滑片P移至某一端点时电流表示数为0.3A电压表示数变化了3V此时滑动变阻器消耗的功率为P2且P1P2＝56．下列判断正确的是
1分﹣Hurryup! ﹣Onemoment.Imye﹣mailsandthenI'mreadytogo. A.read B.amreading C.wasreading D.haveread
10分Expertsinnutrition营养suggestthatweshouldeatatleastfivedifferentkindsofvegetablesandfruitaday.Theyareverynecessaryforourhealthandhelpourbodiesworkwell.Theycanhelpreduce减少theriskofgettingill.Therearealotofvegetablesandfruittochoosefromandtheytastedelicious.1 It'seasytobuyourfoodfromthelocalsupermarketsowhydowegotothetroubleofgrowingourown?Hereareseveralgoodreasons 2Youcanpickandeatitatonce.Whenyouhavetriedityouwillagreethatvegetablesandfruitthatareeatenstraightfromthegardentastebetterthananythingyoucanbuyinasupermarket. Youmaywanttocutdownonyourfoodmiles﹣thedistancethataproducthastravelledbeforeitreachesyourkitchen.Manyfoodpackagesareflownhalfwayacrosstheearth.3 Homegrownfoodislikelytobehealthier.Foodproducersoftenusefertilizers化肥andpesticides农药whichcanendupinyourfood.Ifyougrowyourownthingsaredifferent.4Youmightalsochoosetogrowsometraditionalvegetablesandfruit.Theseoftenhavemoreofthevitaminsminerals矿物质andprotein蛋白质thatkeepyouhealthy. 5Andyoucangrowyourownevenifyouonlyhaveasmallbackyardorabalcony阳台.Somefoodcangrowwellinpotsincludinglettucetomatoespotatoesandcarrots.Youcanrecycleplasticbottlesandcupstogrowsomething.Justmakesurethereareholesfordrainage排水andasmallplateunderthemtocatchdropsofwater. Happygardening!
“东方红3”科学考察船图1于2018年顺利下水标志着我国自主创新研发的科学考察船挺进世界一流船型行列．该船长103米船宽18米排水量5800吨续航力1500海里．在一次航行中从某一时刻开始科考船受到水平方向的牵引力F随时间t的变化关系如图1﹣25甲所示船的运动速度v随时间t的变化关系如图2乙所示．海水的密度为1.02×103kg/m3g取10N/kg．求 1满载时科学考察船受到的浮力 2科学考察船吃水深度为5.5m时船底受到的海水压强 3从第50s到100s内牵引力所做的功．
热门题库
更多
高二下学期生物
高三下学期生物
高三下学期化学
高三上学期英语
高二下学期英语
教案备课库
高三下学期英语
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
国际法
教案备课库
教案备课库
教案备课库
湘公网安备 43130202000226号