首页
试卷库
试题库
当前位置：
X题卡
>
所有题目
>
题目详情
某实验小组的同学用如图所示的装置测量滑块与斜面间的动摩擦因数μ．每次滑块都从斜面上由静止开始下滑，测出滑块每次下滑时遮光板到光电门所在位置的距离L及相应遮光时间t的值． （1）用游标卡尺测量遮光...
查看本题答案
包含此试题的试卷
高三下学期物理《》真题及答案
点击查看
你可能感兴趣的试题
【广东省韶关市六校2017届高三10月联考】如图甲所示实验装置可以测量滑块经过斜面底端的瞬时速度.1
为了测量某材质木块与牛皮纸之间的动摩擦因数一位同学设计了如下实验如图所示在斜面和水平面上贴上待测牛皮
质量m＝0.5kg的滑块从倾角为37°的斜面底端以一定的初速度冲上斜面斜面足够长.某同学利用DIS实
某探究小组设计了用一把尺子测定动摩擦因数的实验方案如图所示将一个小球和一个滑块用细绳连接跨在斜面上端
某探究小组设计了用一把尺子测定动摩擦因数的实验方案.如图示将一个小球和一个滑块用细绳连接跨在斜面上端
物理小组在一次探究活动中测量滑块与木板之间的动摩擦因数实验装置如图甲所示打点计时器固定在斜面上滑块拖
某探究小组设计了用一把尺子测定动摩擦因数的实验方案如图所示将一个小球和一个滑块用细绳连接跨在斜面上端
某探究小组设计了用一把尺子测定动摩擦因数的实验方案如图所示将一个小球和一个滑块用细绳连接跨在斜面上端
学校的物理课外活动小组欲测滑块在斜面上下滑的加速度以及滑块与木板间的动摩擦因数一位同学想出了一个巧妙
如图所示板A.的质量为m滑块B.的质量为2m板A.用绳拴住绳与斜面平行滑块B.沿倾角为α的斜面在A.
一质量m＝0.5kg的滑块以一定的初速度冲上一倾角为30º足够长的斜面某同学利用DIS实验系统测出了
一小组用如图所示装置测定滑块与斜面间的动摩擦因数.斜面下端固定一光电门上端由静止释放一带有遮光条的滑
一小组用如图所示装置测定滑块与斜面间的动摩擦因数.斜面下端固定一光电门上端由静止释放一带有遮光条的滑
某探究小组设计了用一把尺子测定动摩擦因数的实验方案如图所示将一个小球和一个滑块用细绳连接跨在斜面上端
一质量m＝0.5kg的滑块以一定的初速度冲上一倾角为37º足够长的斜面某同学利用DIS实验系统测出了
一小组用如图所示装置测定滑块与斜面间的动摩擦因数.斜面下端固定一光电门上端由静止释放一带有遮光条的滑
某探究小组设计了用一把尺子测定动摩擦因数的实验方案如图所示将一个小球和一个滑块用细绳连接跨在斜面上端
某探究小组设计了用一把尺子测定动摩擦因数的实验方案如图所示将一个小球和一个滑块用细绳连接跨在斜面上端
如图所示为某同学测定滑块与斜面间动摩擦因数的装置打点计时器固定在斜面的最上端让一滑块拖着穿过打点计时
某探究小组设计了用一把尺子测定动摩擦因数的实验方案如图所示将一个小球和一个滑块用细绳连接跨在斜面上端
热门试题
更多
BythetimeRobertPorterAllenwasbornin1905thewhoopingcrane鸣鹤wasalreadyintrouble.ThebeautifulbirdwasoncecommonlyfoundacrossNorthAmerica.By1941thewhoopingcranepopulationhaddwindledtothedoubledigits.ThetallestspeciesinNorthAmericawerecriticallyendangered. Inthe1940stheremainingcranesmigrate以迁徒everyyearfromtheGulfCoastofTexastosomewhereinthenorthofCanadatobreed繁殖.Theconservationcommunitydidn'tknowwherethebirdswent.Thewetlandswheretheyusedtospendwintersweregrowingrarerandrarerastheytinynon﹣migratinggroupofwhoopingcraneswasaliveinLouisianain1941butthegrouphaddisappearedbythetimeAllenstartedhisresearch. In1942AllenundertookthewhoopingcraneprojectOverthenextthreeyearshedidalmostconstantfieldworkthattookhimfromTexasupthecranes'migrationroutetoNebraskaandonintoSaskatchewaninsearchofthenestinggroundofthebirds. Studyingthebirdinitsbreedinghabitatandseeinghowmanybirdswerebornwouldallowconservationiststounderstandhowtohelpthebirdsontheirjourney.Butfindingthewhoopingcrane'snestingsitemeantdifficultandfruitlessairsearchesovernorthernCanada. In1952Allenwroteareportonthewhoopingcrane.Thereportwasawarningcalltotheconservationcommunityonly33migratorywhoopersremainedandtheirnestingsitestillhadn'tbeenfound.TwoyearslaterthewhoopingcranesbreedinggroundsinCanada'sWoodBuffaloNationalParkwerefinallyfoundandAllenheadednorthtostudythemfirsthandanincrediblydifficultjourneyinSprunt'swordsAllensworklaidthegroundworkforconservationistslosavethebirdsTheireffortspaidoffasthenumbersreached57by1970and214by2005.Todaythewhoopingcraneisstilllistedasendangeredbutthereareroughly600birdsalive. 1Whatisthepassagemainlyabout? A.ItisastoryaboutAllen'ssearchingforalostbird. B.ItisastoryaboutthecranesLongmigrationflight C.Itisastoryaboutthecranesurvivingthewinters. D.Itisastoryaboutconservingthewhoopingcrane 2Whatdoestheunderlinedworddwindledmeaninthefirstparagraph? A.Increased B.Reduced C.Stayed D.Limited 3AceilingtothePassagewhichofthefollowingismainlyresponsibleforwhathappenedtotheremainingwhoopingcranes? A.Habitatloss B.Illegalhunting. C.Naturaldisaster. D.Deadlydiseases. 4Whichofthefollowingeventstookplacein1954? A.Thenon﹣migratinggroupofwhoopingcranesdisappeared B.RobertPotterAllenundertookthewhoopingcraneproject. C.Thewhoopingcranesbreedinggroundswerediscovered D.RobertPorterAllenwroteareportonthewhoopingcrane.
10分 IsFreshAirReallyGoodforYou? Weallgrewuphearingpeopletellustogooutandgetsomefreshair.1AccordingtorecentstudiestheanswerisabigYESiftheairqualityinyourcampingareaisgood. 2Iftheairyou'rebreathingisclean﹣whichitwouldbeifyou'reawayfromthesmogofcities﹣thentheairisfilledwithlife﹣givingenergizingoxygen.Ifyouexerciseoutofdoorsyourbodywilllearntobreathemoredeeplyallowingevenmoreoxygentogettoyourmuscles肌肉andyourbrain. Recentlypeoplehavebegunstudyingtheconnectionbetweenthenaturalworldandhealing治愈.3Intheseplacespatientscangotobenearnatureduringtheirrecovery.Itturnsoutthatjustlookingatgreengrowingthingscanreducestresslowerbloodpressureandputpeopleintoabettermood情绪.Greeneryisgoodforus.HospitalpatientsWhoseetreebranchesouttheirwindowarelikelytorecoveratafasterratethanpatientswhoseebuildingsorskyinstead.4Itgivesusagreatfeelingofpeace. 5Whilethesun'srayscanageandharmourskintheyalsogiveisbeneficialVitaminD.TomakesureyougetenoughVitaminD﹣butstillprotectyourskin﹣putonsunscreenrightasyouheadoutside.Ittakessunscreenaboutfifteenminutestostartworkingandthat'splentyoftimeforyourskintoabsorbaday'sworthofVitaminD. A.Freshaircleansourlungs. B.Sowhatareyouwaitingfor? C.Beinginnaturerefreshesus. D.Anothersidebenefitofgettingfreshairissunlight. E.Butisfreshairreallyasgoodforyouasyourmotheralwayssaid? F.Justasimportantlywetendtoassociateairwithhealthcare. G.AllacrossthecountryrecoverycentershavebegunbuildingHealingGardens.
如图所示一端开口另一端封闭的玻璃管内用水银柱封住一定质量的空气当开口向下竖直放置时下水银面恰与管口相平．现使玻璃管绕管口转过30°角则被封闭的气体
如图所示抛物线C1C2分别是纯电阻直流电路中内外电路消耗的电功率随电流变化的图线电源电动势和内阻一定．由该图可知电源的最大输出功率为W电源的内电阻为Ω．
NeedaJobThisSummer? Theprovincialgovernmentanditspartnersoffermanyprogramstohelpstudentsfindsummerjobs.Thedeadlinesandwhatyouneedtoapplydependontheprogram. Notastudent?Gotothegovernmentwebsitetolearnaboutprogramsandonlinetoolsavailabletohelppeopleunder30buildskillsfindajoborstartbusinessesallyearround. JobsforYouth Ifyouareateenagerlivingincertainpartsoftheprovinceyoucouldbeeligible符合条件forthisprogramWhichprovideseightweeksofpaidemploymentalongwithtraining. WhoiseligibleYouth15﹣18yearsoldinselectcommunities社区. SummerCompany SummerCompanyprovidesstudentswithhands﹣onbusinesstrainingandawardsofupto$3000tostartandruntheirownsummerbusinesses. WhoiseligibleStudentsaged15﹣29returningtoschoolinthefall. StewardshipYouthRangerProgram YoucouldapplytobeaStewardshipYouthRangerandworkonlocalnaturalresourcemanagementprojectsforeightweeksthissummer. WhoiseligibleStudentsaged16or17attimeofhirebutnotturning18beforeDecember31thisyear. SummerEmploymentOpportunities机会 ThroughtheSummerEmploymentOpportunitiesprogramstudentsarehiredeachyearinavarietyofsummerpositionsacrosstheProvincialPublicServiceitsrelatedagenciesandcommunitygroups. WhoiseligibleStudentsaged15orolder.Somepositionsrequirestudentstobe15to24orupto29forpersonswithadisability. 1WhatisspecialaboutSummerCompany? A.Itrequiresnotrainingbeforeemployment. B.Itprovidesawardsforrunningnewbusinesses. C.Itallowsonetoworkinthenaturalenvironment. D.Itoffersmoresummerjobopportunities. 2WhatistheagerangerequiredbyStewardshipYouthRangerProgram? A.15﹣18. B.15﹣24. C.15﹣29. D.16﹣17. 3Whichprogramfavorsthedisabled? A.JobsforYouth. B.SummerCompany. C.StewardshipYouthRangerProgram. D.SummerEmploymentOpportunities.
30分 AGoodMan It'salateSaturdayafternooninearlyMarchandIamsweatinginsearchoftheonlygiftmysonwantsfromLosAngelesa1tothehomesofthestarssuchasBradPittandJetLi. AcheerfultaxidriversaysNoproblem.Mapsellersareeverywhere!Whenthetaxistopsafellow2withathinfoldedsheetandsaysTendollars. Tendollars!Withabsolute3IinformhimThat'stoomuch.Themapmanleaves.IbeginwalkingcertainI'llfindaan4starmapsoon. Iam5.There'shardlyanybodyonthestreet.Theredon'tseemtobemanyrealstoresjustcarsandbars.Nomaps.Nostars.Blockspass.Thesunbeginstosink.Atthe edgeofWestHollywood6fellowwandersaheadsellingstarmapstosometeenagegirls. Tendollars7.Forgetit.Mysonwill8. ThatnightIcallmywife.Didyougetoneofthosemapstothestars?He'sbeentalkingabout9else. This10ishardtoignore.It'slate.Atall﹣nightmarketsnomaps.Iheadbacktothehotel.Morningiscoming.Therewillbeonelast11.AfterIcheckoutItakeataxi.Butatnineinthemorningmapsellersare12tobefound. YouknowsaysthedriverTheguyswiththemapsjustaren'tupyet!He'sright. Forgetit.Let'sgototheairport. WellsaysthedriverIcould13youoneifyoulike. Sure.Trustthisguy?Imightaswellthrowcashontothefreeway.ButexitingthetaxiI14mylastchance.Ihandhim＄13andmybusinesscard.Threeweekspass.I've15onthestarmap.Mysonhasstoppedmentioningit. Thenoneafternoonstickingoutfromunderpilesofflyersthereitisabigwhiteenvelope.Thereisasmallnote.Icanhardlyreadit16Imakeoutafewphrases﹣forgive17taxi'sbeendownandfinallyhere'smapforyourson.There'snoreturnaddress.It'ssignedkindregardsM. Iholdthenoteinmyhand18whatmysonsaidtomewhenIgotbackfromLosAngeles. Didyoumeetany19Dad?heasked. NowIknowwhattotellhim. YesIdid.ImetaguynamedM. Ifyounever20anybodyyou'llneverfindthegoodguys. 1A.decoration B.map C.book D.symbol 2A.argues B.requests C.competes D.approaches 3A.assurance B.permission C.anxiety D.bargain 4A.perfect B.inexpensive C.proper D.detailed 5A.shocked B.confused C.impatient D.wrong 6A.any B.some C.another D.either 7A.still B.even C.almost D.yet 8A.believe B.regret C.understand D.admit 9A.anything B.everything C.something D.nothing 10A.idea B.news C.change D.reason 11A.try B.journey C.action D.minute 12A.everywhere B.somewhere C.anywhere D.nowhere 13A.give B.mail C.show D.spare 14A.create B.recognize C.deserve D.blow 15A.givenup B.throwndoubts C.refusedoffers D.droppedin 16A.and B.or C.but D.for 17A.fault B.delay C.carelessness D.rudeness 18A.remembering B.reminding C.reviewing D.realizing 19A.admirers B.friends C.stars D.heroes 20A.lookupto B.turnto C.havefaithin D.agreewith
如图如图1中两个被固定的点电荷Q1Q2连线的延长线上有ab两点．Q1带正电检验电荷+q仅受电场力作用t＝0时恰经过b点然后沿ba向右运动其v﹣t图象如图2．则Q2带电从b到a的过程中q的电势能变化情况是．
25分假定你是李华暑假在伦敦学习得知当地美术馆要举办中国画展.请写一封信申请做志愿者内容包括 1.写信目的 2.个人优势 3.能做的事情. 注意 1.词数100左右 2.可以适当增加细节以使行文连贯 3.结束语已为你写好.
15分ThepolarbearisfoundintheArcticCircleandsomebiglandmassesasfarsouthasNewfoundland.Whiletheyarerarenorthof88°thereisevidence1theyrangeallthewayacrosstheArcticandasfarsouthasJamesBayinCanada.Itisdifficulttofigureoutaglobalpopulationofpolarbearsasmuchoftherangehasbeen2poorstudiedhoweverbiologistscalculatethatthereareabout20000﹣25000polarbearsworldwide. Modernmethods3trackingpolarbearpopulationshavebeenemployedonlysincethemid﹣1980sandareexpensive4performconsistentlyoveralargearea.InrecentyearssomeInuitpeopleinNunayut5reportincreasesinbearsightingsaroundhumansettlementsleadingtoa6believethatpopulationsareincreasing.Scientistshaverespondedby7notethathungrybearsmaybecongregating聚集aroundhumansettlementsleadingtotheillusion错觉thatpopulationsare8highthantheyactuallyare.Of9nineteenrecognizedpolarbearsubpopulationsthreearedecliningsix10bestableoneisincreasingandninelackenoughdata.
如图a所示宽L不计电阻的光滑长轨道固定在水平面内一端装有阻值R的定值电阻．轨道平面内存在竖直方向的匀强磁场磁感应强度B．质量m不计电阻的金属杆放在轨道平面上与轨道垂直．初始时刻金属杆有向右的初速度v0同时受到向左的水平拉力． 1初始时刻流过电阻R上的电流大小 2若流过电阻R上的电流随时间均匀减小试判断金属杆做什么运动 3若在水平变力作用下金属杆匀减速运动到速度为零．要使此过程水平变力始终向左则加速度满足什么条件 4若水平向左的拉力保持功率P不变在图b中定性画出金属杆减速到1m/s的过程中的v﹣t图象本小题可用的数据如下B＝0.5TL＝0.1mR＝0.1ΩP＝0.1Wv0＝3m/s．作图要有必要的理由．．
如图所示闭合金属线框abcd位于水平方向匀强磁场的上方h处由静止开始下落并进入磁场在运动过程中线框平面始终和磁场方向垂直不计空气阻力那么在线框进入磁场过程中线框
布朗运动实验得到某个观察记录如图该图反映了
如图1所示是DIS实验研究动能的大小与物体的质量和运动速度关系实验装置． 1图中的①是传感器可以用来测小车的大小． 2在实验中小车动能EK的大小是用摩擦块滑行的距离s来反映的．这样处理的理论依据是用摩擦块克服摩擦力做功fs的多少来反映小车动能EK的大小由于可看成不变因此EK与距离s成比． 3对多组记录数据先后用s～v图2上s～v2图2下等进行拟合研究均得到类似如图所示图象从中得出该实验合理的结论是．
有四个电源电动势均为6V内阻分别为0.5Ω1Ω2Ω3Ω．选择其中一个电源对阻值为2Ω的电阻R供电为使R上获得的功率最大选择的电源其内阻为
如图所示水平面上放置两根平行的光滑金属导轨其上搁置两根金属棒ab和cd金属棒能在导轨上自由滑动整个装置放在竖直向下的匀强磁场中当ab向右滑动时棒cd
6分SUPPORTWORKER Doyouhavetheabilitytocareforothers?Canyouunderstandhowolderpeoplefeel?Areyouagoodcommunicator?Doyouhavegoodlisteningskills?Canyouworkweekends? IfyouhaveansweredYEStotheabovewewouldliketohearfromyou ☆Startingrateof￡8.56perhour ☆Freeuniform ☆Excellenttraining careers@golden﹣care.com WOWEEMAGAZINE WritersWanted WoweeMagazineislookingforwritersforitswebsite.Payisbasedonthenumberofpeoplewhoreadyourarticles.Youmayalsoreceivefreeticketstoeventsandfreeproductstotest.Thisisagreatopportunitytogetvaluableworkexperience. Wewantpeoplewhoarechattyinterestingpassionateskilled Contactusatinfo@wowee.com. CALLINGALLMODELS Thinkyoucouldbeamodel?Ifsowe'dliketomeetyou! Workingasasuccessfulfashionmodelisn'teasybutitisveryexcitingandcouldbeagreatopportunity. Girlsshouldbeover16withaminimumheightof172cmandboysshouldhaveaminimumheightof182cm.Ifyouareunder16anddonotyethavetherequiredheightwewouldstillbeinterestedinmeetingyoubutyoumustbringaparent. info@top﹣model﹣agency.uk WORKFORCOFFEEBEANS JoinBritain'snumberonecafeatCoffeeBeanswhereeverycafehasthesameaimstocreatefamily﹣liketeamsandtogiveexcellentcustomerservice. ManydifferentkindsofpeoplecomeandworkwithussostartyourcareeratCoffeeBeanstoday ☆Choosethehoursyouwork ☆Getmanagementexperience ☆Shareyourloveofcoffee JoinusasaTeamMemberAssistantManagerofCafeManagerdependingonyourskillsandexperience. Emailusatjobs@coffeebeans.co.uk. 1Whichaddressshouldyouemailatifyouwanttobeasupportworker? A.info@wowee.com B.jobs@coffeebeans.co.uk C.careers@golden﹣care.com D.info@top﹣model﹣agency.uk 2AwriterworkingforWoweeMagazinecan. A.getafreeuniform B.receivefreeticketstoevents C.bringaparent D.chooseworkinghours 3Whatcanwelearnaboutthejobsfromthejobpostings? A.Themodelopportunityisonlymeantforadults. B.Thereisnoneedtobetrainedasasupportworker. C.EmployeesatCoffeeBeanshavefewmanagementopportunities. D.ApplicantstoWoweeMagazineareexpectedtobesociableandenthusiastic.
实验小组在做“验证机械能守恒定律”实验时提出了两种方案甲方案为让小车沿倾斜的木板下滑然后测量相关物理量乙方案为将小球用细长绳悬挂固定后使小球摆动然后测量相关物理量 1你建议选择的方案是填“甲”或“乙”理由是． 2若实验小组选用了乙方案实验装置如图所示．实验中用于测量小球速度的传感器可选用传感器． 3实验前已测得DCBA各点高度分别为0m0.050m0.100m0.150m．某同学获得的实验数据如下表分析表中数据发现从B到C到D机械能逐渐减小其原因是． 次数 D C B A 高度h/m 0 0.060 0.100 0.150 速度v/m/s 1.878 1.616 1.299 0 势能Ep/J 0 0.0039 0.0078 0.0118 动能Ek/J 0.0141 0.0104 0.0067 0 机械能E/J 0.0141 0.0144 0.0146 0.0118 4表中A点的机械能数据明显偏小其原因可能是摆锤的释放点A点选填“高于”“低于”
10分假定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写的以下作文.文中共有10处语言错误每句中最多有两处.错误涉及一个单词的增加删除或修改. 增加在缺词处加一个漏字符号∧并在其下面写出该加的词. 删除把多余的词用斜线\划掉. 修改在错的词下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. DearSir/Madam I'mwritinginresponsetoyouradvertisementintheBingleyTimesinMarch2nd.I'mveryinterestinginjoiningyourDanceclassesandwouldbegratefulunlessyoucouldanswerafewquestionsIhave. Youradvertisementstatesthatanumberintheclasseswaskepttoaminimum.Howmuchpeoplearethereineachclass?AsIworkeverydayuntil5o'clockIwouldalsoliketoknowthetimesoftheclasses.InadditionI'dliketoknowifIneedanyspecialshoesfortheclassesandI'dgreatlyappreciateifyoucouldtellmewheretobuyanynecessaryequipments.Finallyasit'smyintentiontoattendtotheseclassesregularlycouldyoualsosendmedetailsofpricesormembershipfees? Thankyouforyourkindattention.Pleasereplyatyourearliestconvenience. Yoursfaithfully ElaineRichards
物体从高处自由下落落地时间为t．若选地面为参考平面当下落时间为时物体所具有的动能和重力势能之比为
如图“离心转盘游戏”中设游客与转盘间的滑动摩擦系数均相同最大静摩擦力等于滑动摩擦力．当转盘旋转的时候更容易发生侧滑向外偏离圆周轨道的是
卢瑟福进行的α粒子散射实验现象表明
如图倾斜固定放置的“Π”形光滑金属导轨位于与水平面成θ角的平面内导轨宽为L电阻不计．宽度均为d的矩形有界匀强磁场ⅠⅡ方向垂直导轨平面向下磁感应强度大小均为B两磁场间的距离也为d．质量为m电阻为R的金属杆ab平行于导轨顶部从距离磁场Ⅰ上边缘h处由静止释放．已知金属杆进入磁场Ⅰ和Ⅱ时的速度相等且始终与导轨接触良好重力加速度为g． 1求金属杆刚进入磁场Ⅰ时的速度v大小 2定性分析金属杆穿过两磁场的过程中能量是如何变化的 3分析并说明金属杆释放处与磁场Ⅰ上边缘的距离h需满足的条件 4作出金属杆从进入磁场Ⅰ到离开磁场Ⅱ这一过程中的v﹣t图象．
8分Asdataandidentitytheftbecomesmoreandmorecommonthemarketisgrowingforbiometric生物测量technologies﹣likefingerprintscans﹣tokeepothersoutofprivatee﹣spaces.Atpresentthesetechnologiesarestillexpensivethough. ResearchersfromGeorgiaTechsaythattheyhavecomeupwithalow﹣costdevice装置thatgetsaroundthisproblemasmartkeyboard.Thissmartkeyboardpreciselymeasuresthecadence节奏withwhichonetypesandthepressurefingersapplytoeachkey.Thekeyboardcouldofferastronglayerofsecuritybyanalyzingthingsliketheforceofauser'stypingandthetimebetweenkeypresses.Thesepatternsareuniquetoeachperson.Thusthekeyboardcandeterminepeople'sidentitiesandbyextensionwhethertheyshouldbegivenaccesstothecomputerit'sconnectedto﹣regardlessofwhethersomeonegetsthepasswordright. Italsodoesn'trequireanewtypeoftechnologythatpeoplearen'talreadyfamiliarwith.Everybodyusesakeyboardandeverybodytypesdifferently. Inastudydescribingthetechnologytheresearchershad100volunteerstypethewordtouchfourtimesusingthesmartkeyboard.Datacollectedfromthedevicecouldbeusedtorecognizedifferentparticipantsbasedonhowtheytypedwithverylowerrorrates.Theresearcherssaythatthekeyboardshouldbeprettystraightforwardtocommercializeandismostlymadeofinexpensiveplastic﹣likeparts.Theteamhopestomakeittomarketinthenearfuture. 1Whydotheresearchersdevelopthesmartkeyboard? A.Toreducepressureonkeys. B.Toimproveaccuracyintyping. C.Toreplacethepasswordsystem. D.Tocutthecostofe﹣spaceprotection. 2Whatmakestheinventionofthesmartkeyboardpossible? A.Computersaremucheasiertooperate. B.Fingerprintscanningtechniquesdevelopfast. C.Typingpatternsvaryfrompersontoperson. D.Datasecuritymeasuresareguaranteed. 3Whatdotheresearchersexpectofthesmartkeyboard? A.It'llbeenvironment﹣friendly. B.It'llreachconsumerssoon. C.It'llbemadeofplastics. D.It'llhelpspeeduptyping. 4Whereisthistextmostlikelyfrom? A.Adiary. B.Aguidebook. C.Anovel. D.Amagazine.
闭合电路中电源的电动势为12V外电压为10V当有2C电量通过电路时该电路中的能量转化情况是非静电力把J的其他形式能量转化为电能静电力把J的电能转化为其他形式能量电源消耗了J的电能．
链式反应中重核裂变时放出的可以使裂变不断进行下去的粒子是
汽车在平直公路上直线行驶发动机功率保持恒定行驶时所受的阻力恒定其加速度a和速度的倒数图象如图．若已知汽车的质量根据图象信息不能求出
做竖直上抛运动的物体在任意相等时间内速度的变化量
一人站在体重计上．当他静止时台秤指针指在45kg刻度处．则在他快速蹲下的整个过程中台秤指针
Anewstudyhasshownhowcomputersandrobotspoweredbyartificialintelligencecanreadhumaneyemovementstoreadhumanpersonalities. Theeyestheysayarethewindowstothesoul.Andifthatistruecomputersandrobotspoweredbysophisticatedartificialintelligencealgorithms算法maysoonhavetheabilitytopeerintoyoursoul.ThatistheresultofanewstudyontheconnectionbetweeneyemovementsandpersonalityconductedbyneuroscienceresearchersbasedattheUniversityofSouthAustraliaandPublishedinthescientificJournalFrontiersinNeuroscience. EyemovementsduringaneverydaytaskpredictaspectsofourpersonalitywrotetheresearchersledbyUniversityofSouthAustralianeuroscientistTobiasLoetscherwhoseteamfollows42studysubjectsaroundtheuniversitycampusrecordingtheireyemovementsthendeterminestheirpersonalitytraits特点withwell﹣establishedquestionnairesfordeterminingpersonalitytypeaccordingtoasummaryofthestudypublishedbythesiteScienceDaily. TheresearchersfedthedataintotheirAlalgorithmsandfoundthatcomputersrunningthealgorithmswereabletorecordhumaneyemovementsandimmediatelydetermineaperson'smajorpersonalitytraitssuchasneuroticismextraversion外向agreeablenessconscientiousnessaswellasperceptualcuriositythescientistswrote. Thenewfindingscouldimprovethewayhumanbeingsinteractwiththeircomputersandotherhigh﹣techdevicesevenrobotsallowingformorenaturalandrealisticsocialinteractionswithmachinesLoetschersaid. Peoplearealwayslookingforimprovedpersonalizedservices.Today'srobotsandcomputersarenotsociallyawaresotheycannotadapttonon﹣verbalinformationLoetschersaidinastatementquotedbyIndianExpress.Thisresearchprovidesopportunitiestodeveloprobotsandcomputerssothattheycanbecomemorenaturalandbetteratinterpretinghumansocialsignals. ThestudyrevealedpreviouslyundiscoveredrelationsbetweenspecificpersonalitycharacteristicsandspecificeyemovementtendenciesaccordingtoasummaryinBritain'sDailyMailnewspaper. 1WhatdotheunderlinedwordspeerintoinParagraph2probablymean? A.understand B.stareat C.searchfor D.concernabout 2Howdidtheresearchersconducttheresearch? A.Itwascarriedoutinalab. B.42subjects'eyemovementswererecorded. C.Thestudents'dailymovementsweretracked. D.Itssubjects'personalitiesweredeterminedbycomputer. 3AccordingtoTobiasLoetscherwhatcanweknow? A.Robotsandcomputersaresociallyconscious. B.Peoplecarelessaboutimprovedpersonalizedservices. C.Today'srobotsandcomputerscanaccustomtonon﹣verbalinformation. D.Thediscoverywillimprovetheinteractionbetweenhumanbeingsandmachines. 4Whatcanbeasuitabletitleforthetext? A.HumanPersonalityTraits B.WhatHumanEyeMovementsAre C.TellPersonalitiesbyEyeMovements. D.HowHumansandMachinesInteract
如图所示中的两幅图是研究光的波动性时拍摄到的．这属于光的现象如果图中AB分别是用红光和紫光在相同条件下得到的则是用红光得到的．
热门题库
更多
高二下学期数学
高二上学期化学
高二下学期物理
高三下学期物理
高三上学期物理
高三上学期生物
高三上学期化学
高二下学期化学
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
湘公网安备 43130202000226号