首页
试卷库
试题库
当前位置：
X题卡
>
所有题目
>
题目详情
一段铁丝长度一定，每段长度与段数（ ）
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
线缆类闲置设备移交入库时不需提供段数及每段长度等资料
把一根铁丝截成两段第一段长米第二段长度占总长度的两段铁丝相比
第一段长
第二段长
一样长
无法比较
把3米长的铁丝平均截成7段下列说法中错误的是
每段长
米
每段长度是全长的
每段长度是全长的
把2m长的铁丝平均截成5段每段是这2m的每段长度是3段长度是．
把一根3米长的铁丝平均分成5段每段长米每段长是全长的每段长度是1米的．
一根木条截成三段第一段长3米第二段长4米第三段长5米每段木条各占总长度的几分之几
一根铁丝长4米把它平均分成10段每段长米每段的长度是这根铁丝总长的．
把一根5米长的铁丝平均分成8段每段的长度是这根铁丝的每段长米．
一根铁丝分成3段第一段长6米第二段长8米第三段长10米．每段各占总长度的几分之几
线缆类闲置物资移交入库时不需提供段数及每段长度
一段长15米的绳子剪了4次每段长度相等每段长米．
3
4
6
一根电线分成三段第一段长3米第二段长4米第三段长5米每段线各占总长度的几分之几
把一根5米长的铁丝平均分成8段每段的长度是这根铁丝的每段长米．
一根2米长的铁丝剪成长度相等的5段每段长是这根铁丝的每段长是米．
将一根电线截成15段一部分每段长8米另一部分每段长5米长8米的总长度比长5米的总长度多3米求这根铁
长度一定的铁丝平均分成若干段每段的长度和截的段数成比例．
把一条铁丝截成两段第一段长米第二段是全长的那么两段铁丝长度相比较的结果是
第一段长
第二段长
两段相等
无法比较
长度一定的铁丝平均分成若干段每段的长度和截的段数成比例．
把一根均匀木棒随机地按任意点拆成两段则其中一段的长度大于另一段长度的2倍的概率为．
把一根均匀木棒随机地按任意点拆成两段则其中一段的长度大于另一段长度的2倍的概率为
热门试题
更多
10分根据短文内容用方框内所给单词的正确形式填空每空一词每词一次并将答案写在答题卡上相应的位置.wrongairtooinwhatawayflyatwithoutshineIfyouareaskedthequestionWhatcolouristhesky?Ibelieveyouwillanswerblue.ButIamafraidyouare.Theskyhasnocolor.Whenweseebluewearelookingthebluesunlight.Thesunlightonthelittlebitsofdust灰尘intheair.Istheskyfullof?Iamsurethatyouareaskedthisquestion.Weknowthatthereisairallaroundtheworld.Wecouldnotliveair.Planescouldnotifthereisnotanyair.Ifwegofarenoughfromtheearththenwewillfindthereisnoair.Perhapswecananswersomeofourquestionsnow.isthesky?Theskyisspace.Itisallaroundtheworld.Thereisnothingbutthesunthemoonandthestarsspace.
养生壶是一种用于养生保健的烹饮容器采用新型电加热材料通电后产生热量把壶内的水加热．下图是某款养生壶及其铭牌上的信息求 1养生壶中1L的水从20℃升高到85℃需要吸收多少热量 2正常工作时养生壶加热效率为91%将1中的水加热需要多长时间 3用电高峰期养生壶将1L的水从20℃加热到85℃实际用时363s则实际电压是多少．设养生壶的电阻和加热效率不变．
10分五选五 根据短文内容从短文后的选项中选出能填入下列小题横线上的最佳选项. WhenwillRestallwasinfifthgradehereceivedbussafetytrainingatschool.Localbusdriverstaughtstudentsabouthowtousethebuses'two﹣wayradiosAtwowayradioisaradiothatcanbothsendandreceivemessages1.AndtheyshowedthestudentshowtousetheminemergencyR8agsituations.WillusedwhathelearnedtohelpahurtbusdrivergetquickmedicaltreatmentPeopleinhishometownnowcallthe11﹣yearoldaheroforhisbraveactions. Willwastakingthebustoschoolonemorning.2.Hehadtowait10minutesorsobeforehecouldgetoffthebus. Butthenheheardaloudnoiseandlookeduptoseewhathappened.3.Shehadpassedoutandfelloveronthebusstairs.Willlefthisseatgrabbedthetwo﹣wayradioandreportedthatthedriverwashurt.4.Soonanotherbusdriverandanambulance救护车arrivedtohelp. Whentheygottherethebusdriverwasawakeandsittingupbutnotspeaking.Theysentthedrivertothehospital.Willandeveryoneelseonthebuswenttoclassasusual.Will'sbraveactionsattractedalotofattention.5althoughhedidn'twanttobethespotlight公众注意的焦点IhadtoaskhimsaidhisfatherTimRestal A:Likeeveryotherstudentonthebuswillwasplayingavideogameonhisphone B:AlocalTVstationeveninterviewedhim C:Theusercanbothtalkandlistenit'salsocalledwalkie﹣talkies对讲机 D.Hesawthatthebusdriverwasnolongerinthedriver'sseat E.TheradiosoneachbusletWill'sfriendshearhimreporttheemergency
10分读下面关于感恩节的文章然后判断文章后面的问题正确的答案写T错误的答案写F.Inmostcountriespeopleusuallyeattraditionalfoodonspecialholidays.AspecialdayintheUnitedStatesisThanksgiving.ItisalwaysonthefourthThursdayinNovemberandisatimetogivethanksforfoodintheautumn.AtthistimepeoplealsorememberthefirsttravelersfromEnglandwhocametoliveinAmericaabout400yearsago.Thesetravelershadalonghardwinterandmanyofthemdied.Inthenextautumntheygavethanksforlifeandfoodintheirnewhome.ThesedaysmostAmericansstillcelebratethisideaofgivingthanksbyhavingabigmealathomewiththeirfamily.Themaindishofthismealisalmostalwaysturkeyalargebird.Makingaturkeydinner.HereisonewaytomaketurkeyforaThanksgivingdinner.Firstmixtogethersomebreadpiecesonionssaltandpepper.Nextfilltheturkeywiththisbreadmix.Thenputtheturkeyinahotovenandcookitforafewhours.Whenitisreadyplatetheturkeyonalargeplateandcoveritwithgravy.Finallycuttheturkeyintothinpiecesandeatthemeatwithvegetableslikecarrotsandpotatoes.1ThanksgivingisonthefourthTuesdayinNovemberintheUSA.2Peoplecelebratethefestivaltobethankfulforfoodintheautumnandlifeintheirhome.3Peoplecelebratethefestivalbyonlyeatingalargebirdcalledturkey.4Theturkeyisfullofbreadpiecesonionssaltandpepperbeforebeingcooked.5Theturkeyhasbeencookedatahightemperatureforalongtimebeforeitisputonthetable.
学习了热学的相关知识之后小明和他的兴趣小组组装了如图所示的实验装置完全相同的烧杯中分别装有质量相同的AB两种液体完全相同的燃料盒中分别装有两种不同的燃料并进行了与“热值”和“比热容”相关的物理实验．请你和小明的兴趣小组一起完成下面的实验探究． 1若要探究不同燃料热值的大小关系则要选择图和进行实验在“甲乙丙”中选填比较方法是． 2在探究比热容大小关系的实验中还应控制AB的相等． 3小明的兴趣小组一起根据实验数据绘制出如图丁所示的图象由图象可知液体AB的比热容之比为．
小明分别组装了如图所示的甲乙两种滑轮并用它们分别将相同的重物匀速拉至相同的高度已知滑轮的质量相同且不计绳重与摩擦滑轮重小于物重则
2019年1月25日国足亚洲杯14决赛0﹣3不敌伊朗被淘汰亚洲杯夺冠之路遗憾停止．如图所示足球被运动员踢出以后还可以继续运动是因为足球具有 射门时足球被守门员扑开说明力可以．
如图所示的电路中闭合开关后两个电压表的示数之比为53则R1R2＝相同时间里两电阻消耗的电能W1W2＝若在工作过程中发现两电压表的示数大小相同了则电路中电阻可能出现的故障是．
同学在探究“动能大小与哪些因素有关”的实验中设计了图甲所示的实验方案并进行了如图的实验 步骤l让钢球从斜面A点由静止开始下滑到达水平面时速度为v1撞击木块并使木块移动记下木块移动的距离s1 步骤2让同一钢球从斜面B点由静止开始下滑到达水平面时速度为v2撞击木块并使木块移动记下木块移动的距离s2 步骤3改变让质量不同的钢球从A点由静止开始下滑撞击木块使木块移动记下木块移动的距离s3． 1比较v1v2可知vlv2选填“＞”“＜”“＝”原因钢球的重力势能越大转化为钢球的能越大． 2小明根据s1＞s2得出“质量相等时物体的速度越大动能越大”的结论他是如何分析得出结论的 3小球从斜面上滑下后碰撞到斜面底端水平放置的木块后继续向前运动木块在水平木板上滑行一段距离后停下如图甲所示设碰撞后木块获得的动能为Eo木块克服摩擦力所做的功为W则E0W选填“＞”“＜”或“＝”．
小明在家用手电筒里发现一个标有2.5V字样的小灯泡他想用学习过的伏安法测灯泡正常发光时的电功率请你帮他一起完成下面的实验．1请你用笔画线代替导线将如图甲所示电路连接完整要求当滑动变阻器的滑片向右滑动时灯泡变亮．2若闭合开关发现小灯泡不亮电流表无示数而电压表指针却有明显的偏转则故障可能是．3排除故障后闭合开关眼睛要观察直到电灯正常发光此时电流表的示数如图乙所示则小灯泡额定功率为W．4若实验过程中发现电流表损坏不能使用他利用剩下的器材和一个阻值已知的R0连接成了如图丙所示的电路也测出了灯泡正常工作时的功率．请帮助小明完成下列实验①闭合开关S1将S2拨到触点2调节滑动变阻器使电压表的示数为．②再将开关S2拨到触点1保持滑片的位置不动读出此时电压表的示数U③灯泡额定功率的表达式为P额＝用已知量和测量量表示．
7.5分阅读下列短文从各题所给的ABCD四个选项中选出最佳选项 ArtificialintelligenceAI人工智能istheabilityofacomputerprogramoramachine.ThecomputerorthemachinewithAIcanthinkandlearn.Itisalsoafieldofstudythattriestomakecomputerssmart.JohnMcCarthyascientistcameupwith提出thenameartificialintelligenceover60yearsago.Manythingssuchaslearningandproblemsolvingcanbedonebycomputersthoughnotinthesamewayaspeopledo. AnunusualgoalofAIresearchistocreatecomputerprograms.Theycanlearnsolveproblemsandthinklogically逻辑地.AtpresentAlcansuccessfullyunderstandinghumanspeechrecognize识别humanfacesoperateself﹣drivingcarsandcompeteinsomegamesystemslikeplayingChess.Howeversomepeoplealsoconsider认为AIadangertohumansifitdevelopstooquickly.AfamousBritishscientistalsowasnotforthiskindoftechnology. MathisthebasiclanguageofAI.IfstudentsaregoodatmaththeywillbemorelikelytobecomesuccessfulAIdesigners设计者inthefuture.Weneednotonlybrightstudentsbutalsoaverage普通的students.Asfor对于averagestudentsiftheygetenoughmathskillstheycanalsobecomesuccessfulAIdesigners.BesidesagoodknowledgeofcomputerscienceisalsonecessaryforAIdesigning. Scientistshopetocreatecreative有创造力andemotional有感情的AI.TheAIcanpossiblyunderstandhumanfeelingsorcreateart.Manywaysandtoolshavebeentriedtodiscoverthiswideandexcitingfield. 1FromParagraph1weknowthat. A.allproblemscanbesolvedbycomputers. B.machineswithAIcanthinkandlearn. C.AIhasbeenaroundforonly60years. D.AIworksinthesamewayaspeople. 2Accordingtothepassagewhatcan'tAIdoatpresent? A.Understandhumanspeech. B.Operateself﹣drivingcars. C.Competeinsomegamesystems. D.Understandhumanfeelings. 3Theunderlinedword〝it″inParagraph2refersto指的是. A.chess. B.ascientist. C.thedanger. D.AI. 4AccordingtothepassageifstudentswanttobecomesuccessfulAIdesignerstheyshouldlearnwell. A.mathandart. B.artandtechnology. C.mathandcomputerscience. D.artandcomputerscience. 5Paragraph4mainlytellsusthescientistaboutAI. A.wishes. B.worries. C.feelings. D.discoveries.
1分Myfavoritesportis棒球.
如图所示是乒乓球在水中上浮过程中的某一位置作出此时乒乓球受到的浮力和重力的示意图．
1分It'scoldoutsidesoyoushouldputona厚的sweater.
如图甲所示是一款座圈加热马桶盖．它有高低两个挡其额定电压为220V低温挡和高温档的功率分别是22W和44W其内部电路如图乙所示请你根据所学知识计算下列问题． 1开关如何连接时是低温挡正常电压下低温挡加热的电流多大 2R2的阻值是多少 3如果在额定电压下高温挡加热5分钟则在此过程中电路共消耗多少电能
10分通读短文掌握其大意然后从各题所给的ABCD四个选项中选出可以填入相应空白处的最佳选项 EveryAprilthereisaspecialdayinChina.ItiscalledQingmingFestivalalsocalledTomb﹣SweepingDay.onthatthedaypeople1andhonor纪念theirancestors祖先. Qingmingisan2Chinesefestival.Ithasalonghistory.Itbeganover2000yearsago.Afamouspoem3theTangDynastypoetDuMudescribestheday:RainsfallheavilyasQingmingcomesandpassers﹣by行人withloweredspiritsgo. Tomb﹣SweepingDayhasbeenapublic4ontheChinesemainland中国大陆since2008.Onthisday5bringflowersfoodandwinetotheirancestors'tombs坟墓.Theyputfoodlikecakesandfruitsinfrontofthetombs.Afterthatthey6thedirtoffthetombsandremembertheirdeadfamilymembers. 7doChinesepeopledothis?That'sbecausepeoplethinkthatvisitingtombsisto8respect尊重totheirdeadfamilymembers. HoweverTomb﹣SweepingDayisnotonlyaboutthis.Duringthattimetheweatherisbecoming9.Peoplearealsoabletogarden从事园艺andenjoyoutdooractivities.Familiesoften10foroutings远足orflykitesatthistime. 1A.remember B.meet C.see D.find 2A.popular B.famous C.traditional D.unhappy 3A.for B.by C.with D.as 4A.weekend B.weekday C.journey D.holiday 5A.classes B.families C.friends D.groups 6A.turn B.keep C.sweep D.go 7A.Why B.When C.Where D.Who 8A.bring B.show C.make D.take 9A.warmer B.colder C.cooler D.shorter 10A.havefun B.workhard C.pulltogether D.gettogether
20分Writeareview评论ofthefollowingstoryinabout120words.Thereviewhastoincludethefollowingpoints.阅读下面的故事请根据下面的提示写出一篇约120词的评论. 1Thetitleofyourreview.你撰写的评论的标题. 2Yourideasexamplesandthereasonsforunhappinessandhappinessinthestory.你归纳的关于故事中幸福和不幸福的观点举例子并说明原因. 3Yourideasofhappinessexamplesforhappinessinyourdailylife.归纳你在日常生活中关于幸福的观点并举例说明. 4Yourconclusionabouthappiness.关于幸福的结论. 5Thewordsyoumayuse.你可能用到的词besatisfiedwith对……满意desiren.欲望contentment知足thekey关键tohappiness. Alongtimeagoinarichandbeautifulcountrytherelivedanunhappyking.Hesleptbadlyanddidn'tfeellikeeating.Heoftencriedfornoreason.Thismadethequeenandhispeopleworried.Sotheycalledadoctortoexaminehim.Buthefoundnothingwrongwithhisbody.Hesaidwhatthekingneededwastheshirtofahappypersontowear.Thatwouldmakehimhappy. Theprimeministerwascalledtothepalace.Butwhentheyexplainedtheking'ssituationtohimhesaidAlthoughIhavealotofpoweritdoesn'tmakemehappy.I'malwaysworriedaboutlosingmypower. Thentheking'sbankercametosayI'mafraidI'mnothappyeither.IhavealotofwealthbutI'malwaysworriedaboutlosingmoney.Someonetriestostealmymoney.NextthepalacesingerwascalledtosayI'mfamousbutI'mnothappybecauseI'mworriedaboutbeingfollowedbyothers.Ican'tbefree. Finallythetopgeneralwastoldtogoouttofindahappyman.Hesearchedandsearchedbutcouldn'tfindanyone.Everyoneseemedtohavetheirownproblemsandnoonewastrulyhappy.Justashewantedtogiveup.hesawapoormanonthestreet.Hewaseatingwithhishandsandsinginghappilytohimself.ThegeneralwenttohimandsaidWhatmakesyousohappy?Youhavenopowermoneyorfame.ThemansaidIhaveeverythingIwant.andIdon'twantwhatIcan'thave.SoI'mhappyandmysongcomesfromthehappinessinmyheart.CanyougiveyourshirttomeIneeditsaidthegeneral.Whatshirt?Idon'thaveanyshirts.answeredtheman.
周末的晚上小阳在台灯下写作业妈妈打开了电暖气在这一过程中
10分阅读下面的短文然后根据文章内容简要回答问题. StephenHawkingwasborninEnglandin1942.He'soneofthemostfamousscientistsonspaceandtimeintheworld.HeiscalledtheKingoftheUniverse. HestudiedmathandscienceatOxfordUniversitythenhebecameseriouslyillwhichmadehimunabletospeakorbreathewithoutthehelpofmachines. HewentontostudyatCambridgeUniversityaftergraduatingfromOxfordUniversity.In1965hegotaDoctor'sDegreeofphilosophy哲学.Becauseofhisseriousillnessitwasdifficultforhimtodrawdiagramsortowrite.Sohestartedtothinkinpictures.Withthisnewwayofthinkingheisrespectedbypeopleintheworld.Thenin1988hewrotehisfirstimportantbookABriefHistoryofTime.Itwassoldmorethan5.5millioncopiesinover33differentlanguages.HewasonceinvitedtoChinatogivelectures做演讲.Hisself﹣confidenceandhumouousconversationsimpressedusdeeply. 1WasHawkingborninEngland?nomorethan3words 2WhatdidHawkingstudyatOxfordUniversity?nomorethan3words 3WhendidHawkinggethisDoctor'sDegreeofphilosophy?nomorethan2words 4What'sthenameofHawking'sfirstimportantbook?nomorethan5word 5WherewasHawkingonceinvitedtogivelectures?1word
7.5分OnmyrecenttriptoSydneywithmyparentswevisitedtheWildlifePark. TheWildlifeParkhaslotsofdifferentanimalsandbirds.Somearenative当地的toAustraliaandcanonlybefoundthere.Thereareover600animalsthereincludingkangarooskoalasandcrocodiles鳄鱼.Theyarekeptintheirnaturalenvironment.IliketheWildlifeParkbetterthanazoowheremostoftheanimalsareincages笼子. Wefirstspentsometimewiththekangaroos.Wewereallowedtotouchandfeedthem.Itwasveryexcitingtobesoclosetothem.Therewerekoalastheretoo.Theylookedverycuddly令人想拥抱的.AlthoughwewerenotallowedtocarrythemIgottotakeaphotowithone. Itisawonderfulsouvenir纪念品ofmyholidayinSydney. TheWildlifeParkhasplentyoffreshwaterandsaltwatercrocodiles.Someofthemarereallybigandscary吓人的withhugeteeth!Ididnotwanttogettooclosetothem. Therewasalsoabirdshow.Thekeepersshowedusdifferentspecies种类theyhad.Isawanoldparrotwhichcouldtalk.Itmadeagreatimpressiononme. Ienjoyedthetripverymuch.Therewassomuchtosee. 1WhereistheWildlifePark? A.InSydney. B.InCairo. C.InAthens. D.InRome. 2Whatisawonderfulsouvenirofthewriter'sholiday? A.Aparrotthatcouldtalk. B.Achancetofeedakoala. C.Aphotowithakoala. D.Foodforthekangaroos. 3Whydidn'tthewriterwanttogetveryclosetothecrocodiles? A.Theylivedinwater. B.Thewriterwasafraidofthem. C.Thewriterdidnotwanttofeedthem. D.Thewriterdidnotlikethesmellofsaltwater. 4Whichofthefollowingistrue? A.ThekangaroosarekeptincagesintheWildlifePark. B.ThewritertravelledtotheWildlifeParkalone. C.Thewriterwenttoseekoalasfirst. D.Thewriterwatchedabirdshow. 5HowdidthewriterfeelaftervisitingtheWildlifePark? A.Excited. B.Unhappy. C.Bored. D.Hopeless.
2分汤姆跟他爸爸聊聊这个问题他就已经解决了问题的一半. Tom'shalfwayaproblemjustbytalkingtohisfatheraboutit!
随着生活水平的不断提升各种智能家居进入寻常百姓家．比如声控灯声控密码锁面部指纹密码锁等当我们声音的达到一定程度灯就会自动打开声控密码锁自动识别主人的声音来开锁因为不同人声音的是不同的．
春节期间河南多地市都进行查酒驾行动如图所示是酒精测试仪的原理图．图中酒精传感器的电阻Rm与酒精气体的浓度成反比R0是滑动变阻器电源电压恒定不变则下列说法中正确的是
2分但是说实在的现在他已经有一段时间没玩了. …butbehehasnotplayedforawhilenow.
2分后来我姐姐告诉我蛇能够感到东西在移动. Mysistertoldmelaterthatsnakescanthings.
请在图中画出重力为20N的物体静止在水平地面上所受支持力的示意图．
1分LinglinghasmadegreatprogressinEnglish多亏toLucy'shelp.
1分Wewillgettothetrainstationas早aswecan.
1分Janelivesonthe第十floorinthebuilding.
通过对各种物理量的学习晓丹同学对生活中的一些度量有了自己的估测其中不合理的
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
米 每段长度是全长的
每段长度是全长的
湘公网安备 43130202000226号