首页
试卷库
试题库
当前位置：
X题卡
>
所有题目
>
题目详情
如图，下列图形是某些立体图形的平面展开图，说出这些立体图形的名称．
查看本题答案
包含此试题的试卷
教案备课库《》真题及答案
点击查看
你可能感兴趣的试题
如图所示是某些立体图形的展开图分别指出这些立体图形的名称
下面是两种立体图形的展开图.请分别写出这两个立体图形的名称
如图是某立体图形从三个不同方向看到的图形则这个立体图形是.
如图是一个立体图形的侧面积展开图单位cm求这个立体图形的表面积和体积．
操作题 如图1是一个由53个大小相同的小正方体堆成的立体图形从正面观察这个立体图形得到的平面图形
下面三幅图分别是什么立体图形的展开图请在括号里填出立体图形的名称并计算出这个立体图形的表面积．单位c
如图所示是一个立体图形的平面展开图尺寸如图所示.1这个平面展开图表示的立体图形是2若该立体图形的所有
如图左排的平面图形绕轴旋转一周可以得到右排的立体图形那么与甲乙丙丁各平面图形顺序对应的立体图形的编号
③④①②
①②③④
③②④①
④③②①
如图下列图形是某些立体图形的平面展开图说出这些立体图形的名称．
图29313是一个立体图形的三视图请写出这个立体图形的名称并计算这个立体图形的体积结果保留π.
如图所示是某些立体图形的展开图分别指出这些立体图形的名称
如图所示是某些立体图形的展开图分别指出这些立体图形的名称
如图下列图形是某些立体图形的平面展开图说出这些立体图形的名称．
如图下列图形是某些立体图形的平面展开图说出这些立体图形的名称．
如图下列图形是某些立体图形的平面展开图说出这些立体图形的名称．
如图是某立体图形的三视图则这个立体图形的侧面展开图的面积是.结果保留π
一个立体图形由两个平面和一个曲面围成则这个立体图形可能是
正方体
棱柱
圆柱
圆锥
如图是某立体图形从三个不同方向看到的图形则这个立体图形是.
一个立体图形的三视图一般包括_____图_____图_____图它就是把一个立体图形转化为一个___
下面左侧图形为右侧立体图形的平面展开图左侧平面图形的面及边与立体图形的面及棱边相对应即平面图形上的数
DFEABC
DFBAEC
AFEDBC
DCEABF
热门试题
更多
已知函数fx＝x3+ax2+a+6x+1有极大值和极小值则a的取值范围是．
8分Yourhousemayhaveaneffectonyourfigure.Expertssaythewayyoudesignyourhomecouldplayaroleinwhetheryoupackonthepoundsorkeepthemoff.Youcanmakeyourenvironmentworkforyouinsteadofagainstyou.Herearesomewaystoturnyourhomeintopartofdietplan. Openthecurtainsandturnupthelights.Darkenvironmentsaremorelikelytoencourageovereatingforpeopleareoftenlessself﹣consciouswhenthey'reinpoorlylitplaces﹣andsomorelikelytoeatlotsoffood.Ifyourhomedoesn'thaveenoughwindowlightgetmorelampsandfloodtheplacewithbrightness. Mindthecolors.Researchsuggestswarmcolorsfuelourappetites胃口.Inonestudypeoplewhoatemealsinablueroomconsumed消耗33percentlessthanthoseinayelloworredroom.Warmcolorslikeyellowmakefoodappearmoreappetizingwhilecoldcolorsmakeusfeellesshungry.Sowhenit'stimetorepaintgoblue. Don'tforgettheclock﹣﹣﹣ortheradio.Peoplewhoeatslowlytendtoconsumeabout70fewercalories卡路里permealthanthosewhorushthroughtheirmeals.Beginkeepingtrackofthetimeandtrytomakedinnerlastatleast30minutes.Andwhileyou'reatitactuallysitdowntoeat.Ifyouneedsomehelpslowingdownturnonrelaxingmusic.Itmakesyoulesslikelytorushthroughameal. Downsizethedishes.Bigservingbowlsandplatescaneasilymakeusfat.Weeatabout22percentmorewhenusinga12﹣inchplateinsteadofa10﹣inchplate.Whenwechoosealargespoonoverasmalleronetotalintake摄入jumpsby14percent.Andwe'llpourabout30percentmoreliquidintoashortwideglassthanatallskinnyglass. 1.Thetextisespeciallyhelpfulforthosewhocareabout. A.theirhomecomforts B.theirbodyshape C.housebuying D.healthydiets 2.Ahomeenvironmentinbluecanhelppeople. A.digestfoodbetter B.regaintheirappetites C.burnmorecalories D.reducefoodintake 3.Whatarepeopleadvisedtodoatmealtimes? A.Fatquickly. B.Playfastmusic. C.Usesmallerspoons. D.Turndownthelights. 4.Whatcanbeasuitabletitleforthetest?A.IsYourHouseMakingYouFat?B.WaysofServingDinnerC.EffectsofSelf﹣ConsciousnessD.IsYourHomeEnvironmentRelaxing?
在区间[﹣]上任取一个数x则函数fx＝3sin2x﹣的值不小于0的概率为
10分Trainingforamarathonrequirescarefulpreparationandsteadygradualincreasesinthelengthoftheruns.36buythebest﹣fittingbest﹣builtrunningshoesyoucanfind.Noonecansaywhichbrandwillworkbestforyouorfeelbestonyourfeetsoyouhavetorelyonyourexperienceandonthefeelofeachpairasyoushop.Whenyouhavefoundshoesthatseemrightwalkinthemforafewdaystodouble﹣checkthefit.37.Asalwaysyoushouldstretch伸展atleasttenminutesbeforeeachruntopreventinjuries. Duringthefirstweekdonotthinkaboutdistancebutrunfiveminuteslongereachday.38itiswisetotakeadayofftorest.Butduringthenextweeksetagoalofatleastamileandahalfperrun.39.Aftertwoweeksstarttimingyourself.40.Dependingonthekindofraceyouplantoenteryoucansetupatimetablefortheremainingweeksbeforetherace. A.Aftersixdays B.Foragoodmarathonrunner C.Beforeyoubeginyourtraining D.Witheachdayincreasethedistancebyahalfmile E.Iftheystillfeelgoodyoucanbeginrunninginthem F.Timespentforpreparationraisesthequalityoftraining G.Nowyouarereadytofigureoutagoalofimprovingdistanceandtime. 36. 37. 38. 39. 40.
的展开式中x2y5的系数是．用数值作答
如图在四棱锥P﹣ABCD中PD⊥平面ABCD底面ABCD是菱形∠BAD＝60°AB＝2PD＝O为AC与BD的交点E为棱PB上一点． Ⅰ证明平面EAC⊥平面PBD Ⅱ若PD∥平面EAC求三棱锥P﹣EAD的体积．
将函数的图象上的所有的点横坐标缩短为原来的纵坐标不变再将所得的图象向右平移个单位则所得的函数图象对应的解析式为
25分假定你是李华计划和同学去敬老院nursinghome陪老人们过重阳节theDoubleNinthFestival.请给外教露西写封邮件邀她一同前往内容包括 1.出发及返回时间; 2.活动包饺子表演节目等. 注意1.词数100词左右; 2.可以适当增加细节以使行文连贯; 3.结语已为你写好. Lookingforwardtoyourreply. Yours LiHua.
来那度胺是一种新型免疫调节剂临床用于肿瘤的治疗．研究人员利用HepG2细胞对其作用机理进行了相关研究． 1HepG2细胞是一种肝癌细胞具有的特点该细胞产生的根本原因是．当体内出现癌细胞时机体主要通过免疫发挥免疫监控和清除作用．但由于各种原因癌细胞表面抗原表达量无法被识别从而实现免疫逃逸． 2来那度胺对HepG2细胞毒性的研究 将HepG2细胞培养一段时间后分别加入DMSO溶解的不同浓度的来那度胺溶液24h后测定细胞存活率实验结果如下表说明． 3研究来那度胺的免疫调节作用 将HepG2细胞与淋巴细胞按一定比例混合分别加入不同浓度的来那度胺溶液培养一段时间后统计各组癌细胞的凋亡率．对照组的设置应为． ①单独培养的HepG2细胞②单独培养的淋巴细胞 ③混合培养的HepG2细胞与淋巴细胞④加入等量的DMSO⑤加入等量的生理盐水 凋亡率统计结果如表说明． 4探究来那度胺发挥免疫调节作用的机理 ①已知IL﹣2TNF﹣α是T细胞产生的两种杀伤性细胞因子研究人员利用模型鼠进行实验测定了小鼠IL﹣2TNF﹣α的表达量结果如表 ②T细胞表面的PD﹣1和癌细胞表面的PD﹣L1结合后可以抑制T细胞的活性使其无法识别癌细胞导致癌细胞的免疫逃逸．研究者分别测定了①实验中两种细胞表面的PD﹣1/PD﹣L1表达量结果如图 综合上述实验推测来那度胺发挥免疫调节的作用机理． 5结合上述研究以及对PD﹣1/PD﹣L1信号通路的了解请你为治疗癌症提供一种新的思路．．
在△ABC中角ABC的对边分别是abc已知且则△ABC的面积为
6分ChooseYourOne﹣DayTours TourA﹣Bath&StonchengeincludingentrancefeestotheancientRomanbathroomsandStonehenge﹣￡until26Marchand￡39thereafter. Visitthecitywithover2000yearsofhistoryandBathAbbeytheRoyalCrescentandtheCostumeMuseum.Stonehengeisoneoftheworld'smostfamousprehistoricmonumentsdatingbackover5000years. TourB﹣Oxford&StratfordincludingentrancefeestotheUniversityStMary'sChurchTowerandAnneHathaway'shouse一32until12Marchand36thereafter. OxfordIncludesaguidedofEngland'soldestuniversitycityandcolleges.Lookoverthecityofdreamingspires尖顶formStMary'sChurchTower.StratfordIncludesaguidedtourexploringmuchoftheShakespearewonder. TourC﹣WindsorCastle&HamptonCourtincludingentrancefeestoHamptonCourtPalace﹣﹣£34untilMarchand£37thereafter. IncludesaguidedtourofWindsorandHamptonCourtHenryMill'sfavouritepalace.FreetimetovisitWindsorCastleentrancefeesnotincluded.With500yearsofhistoryHamptonCourtwasoncethehomeoffourKingsandoneQueen.Nowthisformerroyalpalaceisopentothepublicasamajortouristattraction.Visitthepalaceanditsvarioushistoricgardenswhichincludethefamousmaze迷宫whereitiseasytogetlost! TourD﹣CambridgeincludingentrancefeestotheTowerofSaintMarytheGreat﹣£33.until18Marchand£37thereafter. IncludesaguidedtourofCambridgethefamousuniversitytownandthegardensofthe18thcentury. 33.WhichtourwillyouchooseifyouwanttoseeEngland'soldestuniversitycity? A.TourAB.TourBC.TourCD.TourD 34.Whichofthefollowingtourschargesthelowestfeeon17March? A.WindsorCastle&HamptonCourt. B.Oxford&Stratford C.Bath&Stonehenge. D.Cambridge. 35.WhyisHamptonCourtamajortouristattraction? A.Itusedtobethehomeofroyalfamilies. B.Itusedtobeawell﹣knownmaze C.ItistheoldestpalaceinBritain D.Itisaworld﹣famouscastle.
8分Morestudentsthaneverbeforearetakingagap﹣year间隔年beforegoingtouniversity.Itusedtobecalledtheyearoffbetweenschoolanduniversity.Thegap﹣yearphenomenonoriginated起源withthemonthsleftovertoOxbridgeapplicantsbetweenentranceexamsinNovemberandthestartofthenextacademicyear. Thisyear25310studentswhohaveacceptedplacesinhighereducationinstitutionshaveputofftheirentryuntilnextyearaccordingtostatisticsonuniversityentranceprovidedbyUniversityandCollegeAdmissionsSerbiceUCAS. Thatisarecord14.7%increaseinthenumberofstudentstakingagapyear.TonyHigginsfromUCASsaidthatthestatisticsaregoodnewsforeveryoneinhighereducation.Studentswhotakeawell﹣plannedyearoutaremorelikelytobesatisfiedwithandcompletetheirchosencourse.Studentswhotakeagapyearareoftenmorematureandresponsiblehesaid. Butnoteveryoneishappy.OwainJamesthepresidentoftheNationalUnionofStudentsNUSarguedthattheincreaseisevidenceofstudenthadship﹣youngpeoplearebeingforcedintoearningmoneybeforefinishingtheireducation.Newstudentsarenowawarethattheyarelikelytoleaveuniversityupto￡15000indebt.Itisnotsurprisingthatmoreandmorestudentsaretakingagapyeartoearnmoneytosupporttheirstudyforthedegree.NUSstatisticsshowthatover40%ofstudentsareforcedtoworkduringtermtimeandthefigureincreasesto90%duringvacationperiodshesaid. 29.Whatdowelearnaboutthegapyearfromthetext? A.Itisflexibleinlength. B.Itisatimeforrelaxation. C.Itisincreasinglypopular. D.Itisrequiredbyuniversities. 30.AccordingtoTonyHigginsstudentstakingagapyear. A.arcbetterpreparedforcollegestudies B.knowalotmoreabouttheirfuturejobs C.aremorelikelytoleaveuniversityindebt D.haveabetterchancetoentertopuniversities 31.HowdoesOwainJamesfeelaboutthegap﹣yearphenomenon? A.He'spuzzled. B.He'sworried. C.He'ssurprised. D.He'sannoyed. 32.WhatwouldmoststudentsdoontheirvacationaccordingtoNUSstatistics? A.Attendadditionalcourses. B.Makeplansforthenewterm. C.Earnmoneyfortheireducation. D.Preparefortheirgraduatestudies.
8分Mycolortelevisionhasgivenmenothingbutaheadache.IwasabletobuyitalittleoverayearagobecauseIhadmyrelativesgivememoneyformybirthdayinsteadofalotofclothesthatwouldn'tfit.IletasalesclerkfoolmeintobuyingadiscontinuedmodelIrealizedthisadaylatewhenIsawnewspaperadvertisementsforthesetatseventy﹣fivedollarslessthanIhadpaidThesetworkedsobeautifullywhenIfirstgotithomethatIwouldkeepitonuntilstationssignedoffforthenightFortunatelyIdidn'tgotanychannelsshowingall﹣nightmoviesorIwouldneverhavegottentobed. ThenIstarteddevelopingaproblemwiththesetthatinvolvedstatic静电noise.Forsomereasonwhencertainshowsswitchedintoacommercialaloudnoisewouldsoundforafewseconds.GraduallythisnoisebegantoappearduringashowandtogetridofitIhadtochangetoanotherchannelandthenchangeitback.SometimesthistechniquewouldnotworkandIhadtopickupthesetandshakeittoremovethesound.Iactuallybegantobuildupmyarmmuscles肌肉shakingmyset. WhenneitherofthesemethodsremovedthestaticnoiseIwouldsithelplesslyandwaitforthenoisetogoaway.AtlastIendeduphittingthesetwithmyfistanditstoppedworkingaltogether.Mytriptotherepairshopcostme$62andthesetisworkingwellnowbutIkeepexpectingmoretrouble. 21.WhydidtheauthorsayhewasfooledintobuyingtheTVset? A.Hegotanoldermodelthanhehadexpected. B.Hecouldn'treturnitwhenitwasbroken. C.Hecouldhaveboughtitatalowerprice. D.Hefailedtofindanymovieshowsonit. 22.WhichofthefollowingcanbestreplacethephrasesignedoffinParagraph1? A.endedalltheirprograms B.providedfewerchannels C.changedtocommercials D.showedall﹣nightmovies 23.HowdidtheauthorfinallygethisTVsetworkingagain? A.Byshakingandhittingit. B.Byturningitonandoff. C.Byswitchingchannels. D.Byhavingitrepaired. 24.Howdoestheauthorsoundwhentellingthestory? A.Curious B.Anxious C.Cautious D.Humorous.
如图在等腰梯形ABCD中AD＝BC＝AB＝DC＝2点EF分别为线段ABBC的三等分点O为DC的中点则＝．
设AB是两个集合则“x∈A”是“x∈A∩B”的
30分Wheredoyougowhenyouwanttolearnsomething?Afriend?Atutor?Theseareall41acesoflearning.Butitmaywellbethatthelearningyoureallywant42somewhereelseinstead.Ihadthe43ofseeingthisfirsthandona44. Mydaughterplaysonarecreationalsoccerteam.Theydidverywellthisseasonandso45atournamentwhichnormallywasonlyformoreskilledclubteams.Thisledtosome46experiencesonSaturdayastheyplayedagainstteams47trained.Throughthefirsttwogamesher48didnotgetonseriousshotongoal.AsapparentI49seeingmydaughterplayingherbest50stilldefeated. ITseemedthatsomethingclickedwiththe51betweenSaturdayandSunday.Whenthey52fortheirSundaygametheywere53different.Theyhadbegunintegrate融合thekindsofplayandteamworktheyhad54thedaybeforeintotheir55.Theyplayedaggressivelyand56scoredagoal. It57methatplayingagainsttheotherteamwasagreat58momentforallthegirlsontheteam.Ithinkitisageneralprinciple.59isthebestteacher.Thelessonstheymaynotbe60whattheywouldhavegotteninschool.Butarecertainlymorepersonalandmeaningfulbecausetheyhadtoworkthemoutontheirown. 41.A.public B.traditional C.official D.special 42.A.passes B.works C.lies D.ends 43.A.dream B.idea C.habit D.chance 44.A.trip B.holiday C.weekend D.square 45.A.won B.entered C.organized D.watched 46.A.painful B.strange C.common D.practical 47.A.less B.poorly C.newly D.better 48.A.fans B.tutors C.class D.team 49.A.imagined B.hated C.avoided D.missed 50.A.if B.or C.but D.as 51.A.girls B.parents C.coaches D.viewers 52.A.dressed B.showedup C.madeup D.planned 53.A.slightly B.hardly C.basically D.completely 54.A.seen B.known C.heard D.read 55.A.styles B.training C.game D.rules 56.A.even B.still C.seldom D.again 57.A.confused B.struck C.reminded D.warned 58.A.touching B.thinking C.encouraging D.learning 59.A.Experience B.Independence C.Curiosity D.Interest 60.A.harmfulto B.mixedwith C.differentfrom D.appliedto.
已知数列{an}是公比为2的等比数列且满足则a4的值为
15分Theadobedwellings土坯房61buildbythePuebloIndiansoftheAmericanSouthwestareadmiredbyeven62mostmodernofarchitectsandengineers.Inadditiontotheirsimplebeautywhatmakestheadobedwellingsadmirableistheir63abletoairconditionahousewithout64useelectricequipment.Wallsmadeofadobetakeintheheatfromthesunonhotdaysandgiveoutthatheat65slowduringcoolnightsthuswarningthehouse.Whenanewdaybreaksthewallshavegivenuptheirheatandarenowcoldenough66coolthehouseduringthehotday67thesametimetheywarmupagainforthenightThiscycle68godayafterdayThewallswarmupduringthedayandcooloffduringthenightandthusalwaysatimelyoffset抵消fortheoutsidetemperatures.As69naturearchitectsthePuebloIndiansfiguredoutexactly70thicktheadobewallsneededtobetomakethecycleworkonmostdays. 61. 62. 63. 64. 65. 66. 67. 68. 69. 70.
已知等差数列{an}的前3项分别为1ab公比不为1的等比数列{bn}的前3项分别为42a+23b+1． I求数列{an}与{bn}的通项公式 Ⅱ设求数列{cn}的前n项和Sn．
已知函数fx＝Asinωx+φx∈R其中A＞0ω＞0﹣＜φ＜其部分图象如图所示． 1求函数fx的解析式 2已知横坐标分别为﹣115的三点MNP都在函数fx的图象上求sin∠MNP的值．
10分假如英语课上老师要求同桌之间交换修改作文请你修改你同桌的以下作文.文中共有10处错误每句中最多有两处.错误涉及单词的增加删除或修改. 增加在缺词处加一个漏词符号∧并在此符号下面写出该加的词. 删除把多余的词用斜线\划掉. 修改在错词下面划一横线并在该词下面写出修改后的词. 注意1每处错误及其修改均仅限一词; 2只允许修改10处多者从第11处起不计分. OnedaylittleTonywenttoashoppingcenterwithhisparent.Itwasverycrowded.Tonysawatoyonashopwindow.Helikeditsoverymuchthathequicklywalkedintotheshop.Afterlooksatthetoyforsometimeheturnedaroundandfoundwherehisparentsweremissing.Tonywasscaredandbeguntocry.Awomansawhimcryingandtellinghimtowaitoutsideashop.Fiveminuteslater.Tonysawparents.MomsaidHownicetoseeyouagain!DadandIwereterribleworried.Tonypromisedherthatthiswouldneverhappenagain.
在平面直角坐标系xOy中若xy满足约束条件则z＝x+y的最大值为
为研究南瓜砧木嫁接对西瓜幼苗低温抗性的影响机制科研人员进行了相关实验研究． 1以南瓜为砧木西瓜为接穗构建的南瓜砧木嫁接苗为实验组以为对照组测定两组西瓜苗的冷害指数反映植物在寒冷环境的受损伤程度得到如下结果 结果显示说明南瓜砧木嫁接苗能更有效地抵抗低温胁迫． 2叶绿体的上有光系统IPSI和光系统IIPSII它们可以吸收不同波长的光将水光解释放的电子进行传递促进生成最终用于碳反应．当植物吸收的光能超过自身接受程度时光系统会通过热能散失等调节性能量耗散方式将吸收的光能消耗掉来保护自身未被消耗的能量会损伤光系统﹣﹣﹣﹣这种方式为非调节性能量耗散．已有研究发现低温会引起PSII损伤．研究人员分别在常温和低温下对两组幼苗的PSII所吸收光能的利用情况进行了测定结果如图 据图分析南瓜砧木嫁接能提高西瓜幼苗低温抗性的机理． 3研究人员还在低温下测定了碳反应中4个关键基因的转录情况首先提取叶片中并使用特定的引物得到cDNA定量PCR测定显示实验组比对照组的各基因转录水平均明显提高说明．
已知点F为抛物线Ey2＝4x的焦点点A2m在抛物线E上则|AF|＝．
某大型娱乐场有两种型号的水上摩托管理人员为了了解水上摩托的使用及给娱乐场带来的经济收入情况对该场所最近6年水上摩托的使用情况进行了统计得到相关数据如表 I请根据以上数据用最小二乘法求水上摩托使用率y关于年份代码x的线性回归方程并预测该娱乐场2018年水上摩托的使用率． Ⅱ随着生活水平的提高外出旅游的老百姓越来越多该娱乐场根据自身的发展需要准备重新购进﹣批水上摩托其型号主要是目前使用的I型Ⅱ型两种每辆价格分别为1万元1.2万元．根据以往经验每辆水上摩托的使用年限不超过四年娱乐场管理部对已经淘汰的两款水上摩托的使用情况分别抽取了50辆进行统计使用年限如条形图所示已知每辆水上摩托从购入到淘汰平均年收益是0.8万元若用频率作为概率以每辆水上摩托纯利润纯利润＝收益﹣购车成本的期望值为参考值则该娱乐场的负责人应该选购I型水上摩托还是Ⅱ型水上摩托 附回归直线方程为其中．
在直角坐标平面内以坐标原点O为极点x轴的非负半轴为极轴建立极坐标系．已知点AB的极坐标分别为曲线C的参数方程为为参数． Ⅰ求直线AB的直角坐标方程 Ⅱ若直线AB和曲线C只有一个交点求r的值．
已知四棱锥P﹣ABCD的侧棱长均为底面是两邻边长分别为和3的矩形则该四棱锥外接球的表面积为
如图已知P0为椭圆Ca＞b＞0的右焦点B1B2A为椭圆的下上右三个顶点△B2OF与△B2OA的面积之比为． I求椭圆C的标准方程 Ⅱ试探究在椭圆C上是否存在不同于点B1B2的一点P满足下列条件点P在y轴上的投影为QPQ的中点为M直线B2M交直线y+b＝0于点NB1N的中点为R且△MOR的面积为．若不存在请说明理由若存在求出点P的坐标．
下列关于实验的叙述正确的是
大型肉食性动物对低营养级肉食性动物与植食性动物有捕食和驱赶作用当某种大型肉食性动物迁入到一个新的生态系统时下列情况不会出现的是
热门题库
更多
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
教案备课库
教案备课库
教案备课库
教案备课库
高一上学期英语
高一下学期化学
高一下学期物理
高三下学期数学
高三上学期数学
高一下学期英语
教案备课库
湘公网安备 43130202000226号