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如图所示，足够高的薄壁圆柱形容器放在水平桌面上，容器内水的质量为1kg，水的深度为10cm．实心圆柱体A质量为400g，底面积为20cm2，高度为16cm．实心圆柱体B质量为m0克（m0取值不确定）...
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如图所示放在水平桌面上的薄壁圆柱形容器重6N底面积100cm2弹簧测力计的挂钩上挂着重为27N的金属
甲乙两个相同的圆柱形容器放在水平桌面上里面装有相等质量的不同种液体将同一只鸡蛋分别放入其中静止时如图
甲容器中的液体密度较大.
乙容器中的鸡蛋受到的浮力较大
甲、乙两容器底部受到的压强相等
甲、乙两容器底部受到的压力不相等
如图所示放在水平桌面上的薄壁圆柱形容器重1N底面积为200cm2内装8N的水弹簧测力计的挂钩上挂着重
如图所示放在水平桌面上的薄壁圆柱形容器重6N底面积100cm2弹簧测力计的挂钩上挂着重为27N的金属
如图所示重为4N高为0.24m底面积为0.02m2的圆柱形容器放在水平桌面上容器内装有4kg的水不计
重力为2牛底面积为1×10-2米2的薄壁圆柱形容器内装有5×10-3米3的水放在水平桌面的中央.求1
如图所示放在水平桌面上的薄壁圆柱形容器重6N底面积100cm2弹簧测力计的挂钩上挂着重为27N的金属
如图13所示放在水平桌面上的薄壁圆柱形容器重4N底面积100cm2用细线挂着重为10N的物块物块的体
有一圆柱形容器放在水平桌面上现将一边长有一的棱长为10cm质量为2.7kg的正方体金属块放在容器底部
如图所示放在水平桌面上的薄壁圆柱形容器重6N底面积100cm2弹簧测力计的挂钩上挂着重为27N的金属
如图4所示将底面半径为2R的圆柱形薄壁容器放在水平桌面上把高为h密度为ρρ＜ρ水半径为R.的实心圆柱
如图所示水平桌面上的甲乙两个圆柱形容器装有相同质量的水.水对甲乙两容器底的压力和压强的大小关系分别是
如图所示放在水平桌面上的薄壁圆柱形容器重6N底面积100cm2弹簧测力计的挂钩上挂着重为27N的金属
如图23所示放在水平桌面上的薄壁圆柱形容器重4N底面积100cm2弹簧测力计的挂钩上挂着重为10N的
一个圆柱形容器放在水平桌面上如图甲所示容器中立放着一个均匀实心圆柱体M.现慢慢向容器中加水加入的水对
如图所示容积为3dm3的圆柱形容器放在水平桌面上容器内装有质量为1㎏的水现将一个密度为0.6×103
0.6㎏;
1.2㎏;
1.8㎏;
2.0㎏.
一个底面积为25cm2的圆柱形容器放在水平桌面上高为30cm重为4N向容器中倒入500mL的某种液体
如图所示放在水平桌面上的薄壁圆柱形容器重4N底面积100cm2弹簧测力计的挂钩上挂着重为10N的物块
如图11所示底面积为S.1的圆柱体放在水平桌面上当把一质量为m的物体A.放在它上面时.圆柱体对桌面压
如图所示放在水平桌面上的薄壁圆柱形容器重6N底面积100cm2弹簧测力计的挂钩上挂着重为27N的金属
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BasketballStatisticianHelpWanted TheAthleticDepartmentislookingforstudentstohelpassiststaffduringtheFall2016Winter2016﹣17andSpring2017semesters.Studentsinthispositionwillbekeepinglivestatisticsduringbasketballgames.Studentsmustmeetallofthefollowingrequirements •Goodcomputerskills •Availableeveningsandweekends •Knowingbasketballrulesandstatistics StudentsinterestedinworkingfortheAthleticDepartmentshouldcontacttheAthleticCoordinatorattheirrespective各自的campuses. •TP/SSAthleticCoordinatorMichaelSimone240﹣567﹣1308 •RockvilleAthleticCoordinatorJorgeZuniga240﹣567﹣7589 •SpringfieldAthleticcoordinatorGaryMiller240﹣567﹣2273 •GermantownAthleticCoordinatorGavriChavan240﹣567﹣6915 1Whenwillthejobstart? A.InMay2016 B.InMay2017 C.InSeptember2016 D.InSeptember2017 2Whoismorelikelytogetjob? A.SamEnglishmajormemberofthecollegebasketballteam B.JudyITstaffwithnightclasseschildren'sbasketballteamcoach C.Tedcomputermajorbasketballfanfreeoneveningsandweekends D.Mollypart﹣timeprogrammerhighschoolbasketballplayernewmother 3WhomshouldyoucontactifyouwanttoapplyforthejobinRockville? A.Michael B.Jorge C.Gauri D.Gary
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某中学生英文报正举办TheSeasonILikeBest的征文活动.请用英文写一篇短文投稿内容包括 1.你最喜欢的季节 2.你喜欢该季节的两条理由如气候景色活动感受…. 注意 1.词数100左右 2.题目已为你写好 3.行文连贯语篇完整 4.文中不得透露个人真实信息.
如图所示同学们用托盘天平和量筒测定某种液体的密度 1调节天平时指针静止的位置如图甲所示．为使天平平衡应将平衡螺母向选填“左”或“右”调节 2将待测液体倒入烧杯中用已调好的天平测量烧杯和液体的总质量如图乙所示．由图可知烧杯和液体的总质量是g 3将烧杯中的液体倒入一部分到量筒中如图丙量筒中液体的体积是cm3 4用已调好的天平测量剩余液体的烧杯的总质量如图丁所示由此可知液体的密度是kg/m3． 5另一组同学在实验中测量方法正确只是在将液体倒入量筒时不慎漏了几滴则该组测出液体的密度值与真实值相比选填“偏大”或“偏小”．
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FerdinanddeLessepsonceaFrenchdiplomat外交官became1withtheculturesoftheMediterranean地中海andMiddleEastandthegrowthofwesternEuropean2.Butin1849heretiredafteradisagreementwiththeFrenchgovernment. In18543hisexpectationhereturnedtoEgypt4hewasgivenawarmwelcomeandsoonafterwardspermissiontobeginwork5theSuezCanal.DeLessepshadbeen6byreadingaboutNapoleon'sabandonedplansfora7thatwouldallowlargeshipswishingtosailtotheeasttogo8fromtheMediterraneantotheRedSeatherefore9outthelongseajourneyaroundAfrica. DeLesseps'planwas10byanInternationalcommissionofengineersbutfailedtowinthesupportoftheBritishgovernment11deLessepsmakinganumberoftripstoLondon.Heperseveredand12attractedfinancialsupportfromtheFrenchemperorNapoleonIIIandothers. DeLessepswasno13—hisachievementlay14organizingthenecessarypoliticalandfinancialbackingandprovidingthetechnicalsupport15forsuchahugeproject.16beganinApril1859andtheSuezCanalwas17inNovember1869.Britishattitudeschangedwhenthecanalwasseentobea18anddeLessepswastreatedasagreatcelebrity名人onhislatervisittoBritain.In1875theEgyptiangovernmentsoldits19.inthecanalandtheBritishprimeministerBenjaminDisraeli20effectivecontroloftheCanalCompany. 1A.fascinated B.tired C.adapted D.expected 2A.conflict B.sea C.trade D.product 3A.beyond B.in C.out D.to 4A.when B.where C.which D.what 5A.in B.off C.through D.on 6A.paid B.imagined C.pictured D.inspired 7A.river B.lake C.canal D.pass 8A.constantly B.directly C.instantly D.theoretically 9A.cutting B.putting C.finding D.setting 10A.supposed B.objected C.backed D.suspected 11A.though B.despite C.even D.otherwise 12A.beneficially B.eventually C.surprisingly D.adequately 13A.engineer B.officer C.emperor D.planner 14A.on B.down C.of D.in 15A.secure B.present C.necessary D.abundant 16A.Contribution B.Consultation C.Constitution D.Construction 17A.opened B.closed C.challenged D.traded 18A.union B.movement C.success D.pressure 19A.goods B.shares C.project D.power 20A.made B.challenged C.agreed D.bought
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Inmany﹣evenmost﹣space﹣themedfilmswheneverEarth1faceadisasterthesolutionisalwaysfleeingtheplanetinspaceships. But2latestChinesesci﹣fi科幻movieTheWanderingEarthoffersadifferentandmoreambitiousidea.Humansreachforthestarswithout3leavehome. Inthefilm.Earthisindangerof4destroybythedyingsun.Inresponsehuman aroundtheworldworktogether5buildagiantenginesystemthatwillpushEarthawayfromthesun.Instead6abandoningEarthagainthistimewe'retakingitwithus. Thisambitiondidn'tcomefromnowhere.ForthousandsofyearshomelandhashadasoftspotintheheartsandmindsofChinesepeople.Oneoldidiomisluoyeguigen7meansreturningtoone'shomelandinoldagelikefallen8leafreturningtotherootsoftheirtree.ItshowsthetightbondthatChinesepeoplehavehadwiththeirhomeland. Thisspecial9culturebackgroundisprobably10setsTheWanderingEarthapartfromHollywood﹣stylespacefilms.
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InthedepthsoftheFrenchGuianeserainforesttherestillremainunusualgroupsofindigenous土著的people.Surprisinglythesepeoplelivelargelybytheirownlawsandtheirownsocialcustoms.AndyetpeopleinthisareaareinfactFrenchcitizensbecauseithasbeenacolony殖民地oftheFrenchRepublicsince1946.IntheorytheyshouldlivebytheFrenchlaw.HowevertheirremotelocationsmeanthattheFrenchlawisoftenignoredorunknownthusmakingthemintoaninterestingareaoflawlessnessintheworld. ThelivesofthesepeoplehavefinallybeenrecordedthankstotheeffectsofaFrenchmanformPariscalledGin.Ginspentfivemonthsinearly2015exploringthemostremotecornersofthisareawhichsitsontheedgeoftheAmazonrainforestwithhalfitspopulationofonly250000livinginitscapitalCayenne. IhaveaspeciallovefortheFrenchGuianesepeople.IhaveworkedthereonandoffforalmosttenyearssaysGin.I'vebeenabletokeepfirmfriendshipswiththem.ThusIhavebeenallowedtogainaccesstotheirlivingenvironment.Idon'tseeitasalawlessland.ButratherIseeitasanareaoffreedom. IwantedtoshowtheaudienceaphotographicrecordtouchingupontheuncivilizedlifecontinuesGin.Iprefertoworkinblackandwhitewhichallowsmetoshowdifferentspecificworldsmoreclearly. Hisblack﹣and﹣whitepicturespresentaworldalmostlostintime.Thesepicturesshowpeopleseeminglypushedintoaworldthattheywereunpreparedfor.Theselocalcitizensnowhavetobalancetheirtraditionalself﹣supportinghuntinglifestylewiththelifestyleofferedbythemodernFrenchRepublicwhichbringswithitnotonlynecessarystatewelfarebutalsoalcoholismbetrayalandevensuicide. 1WhydoestheauthorfeelsurprisedabouttheindigenouspeopleinFrenchGuiana? A.TheyseldomfollowtheFrenchlaw. B.TheyoftenignoretheGuianeselaw. C.Theyareseparatedfromthemodernworld. D.TheyarebothGuianeseandFrenchcitizens. 2GinintroducedthespecialworldoftheindigenousGuianeseas. A.atourguide B.ageographer C.afilmdirector D.aphotographer 3WhatisGin'sattitudetowardsthelivesoftheindigenousGuianese? A.Cautious. B.Doubtful. C.Uninterested. D.Appreciative.
EverythingINeverToldYouAnovelbyCelesteNg InStock ListPrices26.95Price﹩16.167 YouSave﹩10.7840% Synopsis梗概 Lydiaisdead.Buttheydon'tknowthisyet.SobeginsthestoryofthisnovelaboutaChineseAmericanfamilylivingin1970ssmall﹣townOhio.LydiaisthefavoritechildofMarilynandJamesLee;theirmiddle﹣daughteragirlwhoinheritedhermother'sbrightblueeyeandherfather'sjet﹣blackhair.HerparentsaredeterminedthatLydiawillfulfillthedreamstheywereunabletopursue﹣inMarilyn'scasethatherdaughtershouldbecomeadoctorratherthanhomemakerinJames'scasethatLydiashouldbepopularatschoolagirlwithabusysociallifeandthecenterofeveryparty. WhenLydia'sbodyisfoundinthelocallakethebalancingactthathasbeenkeepingtheLeefamilytogetherfallsintochaosforcingthemtoconfrontthelong﹣keptsecretsthathavebeenlowlypullingthemapart.Jamesconsumedbyguiltsetsoutonarecklesspaththatmaydestroyhismarriage.Marilynisdeterminedtofindaresponsiblepartynomatterwhatthecostis.Lydia'solderbrotherNathaniscertainthattheneighborhoodbadboyJackissomehowinvolved.Butit'stheyoungestofthefamily﹣Hannahwhoobservesfarmorethananyonerealizesandwhomaytheonlyonewhoknowsthetruthaboutwhathappened. AprofoundlymovingstoryoffamilyhistoryandthemeaningofhomeEverythingINeverToldYouisbothagoodpage﹣turnerandasensitivefamilyportraitexploringthedivisionbetweenculturesandtheconflictswithinafamilyanduncoveringthewaysinwhichmothersanddaughtersfathersandsonsandhusbandsandwivesstrugglealltheirlivestounderstandoneanother. 1Whattypeofwritingisthispassage? A.Anexhibitionguide. B.Anannouncement B.Abookreview D.Anadvertisement 2HowmanypeopleintheLeefamilyarementionedaccordingtothepassage? A.Four B.Five C.Six D.Seven 3WhichofthefollowingisTRUEaccordingtothepassage? A.Jameswantshisdaughtertobeahomemaker. B.InHannah'seyesJackisactuallytherealkiller. C.Lydiatakesonthehighexpectationsofthefamily. D.Thefamilyalwaysliveinharmonywitheachother.
Laineyfinishedthirdgrade.Shehadgoodgradesandcouldread1gradelevelbutshedidnotliketoread.OnafamilycartripherAuntDedepulledoutacopyofHarryPotterasasurpriseforher2.ButLaineytookonelookatit3hereyesandsaidBorring! AuntDedeateacherhadreadthebooktoherstudentsandtheylovedit.4theyoungestchildrenintheclasswere5bythestory.They6withgreatinterestandthen7joinedingrandconversationsaboutHarry′sadventures. Howcanyousayit′s8?Haveyoureadit?askedAuntDede. Noit′stoolonganditdoesn′thaveany9.complainedLainey. Ohthat′swhereyouare10therearelotsofpictures.Everypageisfullofpicturesyoujusthavetoreadthewordsto11them.It′slikemagic. NicetryAuntDedeLaineyreplied12fromthebackseat. Another13wasinorder.Wellifyoudon'twanttoreaditgiveit14.Maybeyourmomwould15hearingthestory.ThebooksailedthroughtheairtoAuntDedeandshebegantoreaditaloud.Bytheendofthefirstchapter16werecomingfromthebackseatPleasereadalittle17. Laineyisanexampleofan18reader.AsshownhereLaineycanbecome19aboutreadingwhen20withliteratureontopicsthatinterestherandwhenthepeoplearoundhermodelinvolvementinthereadingprocess. 1A.within B.on C.to D.above 2A.daughter B.niece C.student D.friend 3A.opened B.dried C.rolled D.shaded 4A.Even B.Still C.Just D.Yet 5A.surprised B.annoyed C.puzzled D.attracted. 6A.read B.told C.listened D.wrote 7A.suspectedly B.anxiously C.calmly D.enthusiastically 8A.amazing B.boring C.ridiculous D.humorous 9A.pictures B.stories C.adventures D.conversations 10A.crazy B.foolish C.wrong D.different 11A.see B.match C.show D.recognize 12A.sourly B.patiently C.eagerly D.shyly 13A.idea B.try C.belief D.behavior 14A.away B.out C.in D.back 15A.enjoy B.admit C.mind D.finish 16A.decisions B.requests C.comments D.promises 17A.moreclearly B.longer C.louder D.morecarefully 18A.Unpleasant B.Innocent C.unwilling D.independent 19A.astonished B.worried C.confused D.excited 20A.presented B.concerned C.disturbed D.replaced
根据图中的入射光线或折射光线分别作出相应的折射光线或入射光线．
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一只小灯泡的额定电压为2.0V正常发光时的电阻约为8Ω．小明想测量这个小灯泡的额定功率实验室中有如下器材一个电压表一个电流表一个开关电源A电压为6V电源B电压为3V滑动变阻器规格10Ω2A导线若干． 1为保证实验顺利进行本实验应该选择选填“A”或“B”规格的电源． 2如图是小红测量小灯泡L额定功率的实物电路图不完整请用笔画线代替导线将实物电路图甲连接完整要求滑动变阻器的滑片P向左移动时小灯泡变暗． 3正确连接电路后闭合开关移动滑片发现灯泡L1不亮电流表有示数电压表无示数则故障可能是．更正错误后小明调节滑动变阻器滑片位置直到电压表读数为2.0V小灯泡正常发光此时电流表示数如图乙则小灯泡的额定电流为A小灯泡的额定功率为W． 4完成上述实验后小明打算增加一个定值电阻R0只利用一只电表通过操作开关来测量小灯泡的额定功率．下列图丙中是小明设计的四种不同方案的电路图．其中能够测出小灯泡额定功率的有选填序号．
在“探究怎样使物体上浮或下沉”的实验中小明用手将重1.5N体积为1.6×10-4m3的苹果压入水中直到苹果浸没在水中此过程中水对容器底部的压强将苹果浸没时受到的浮力大小为N．松手后苹果将选填“上浮”或“悬浮”或“下沉”最后静止时苹果受到的浮力大小是N．g取10N/kg
Afteratiringdayyourbedroomacomfortableandinvitingspaceshouldbeoneplacewhereyoucanfinallyrelax.Ifthespaceseemstoolimitedyoucantryoutthesetipstomakeitlooklarger. 1.Avoiddarkcolorsandincreasenaturallight. Inasmallroomwallsanddecorationthataredarkcanmaketheareaseemevensmaller. Chooselightcolorlikecreamandpeachforyourwalls.1Trytoallowasmuchnaturallightaspossibletofallintotheroomthroughthewindoworthebalconydoor.2 2.Lookforfurniturethatuseswallspace. Choosingfurniturethatfitsintoacomerorwhichcanbeplacedagainstawallwillgreatlyincreasegroundspaceinyourroom.3﹣﹣tryhangingsomeononewallandseethedifferenceitmakes. 3.Findcreativewaystostoreyourstuff. Makefulluseofthebuilt﹣inshelvesandstoringcapacitiesinthekitchenandbathroom.4Youcanalsolookformulti﹣functionfurnitureacoffeetablewithdrawersorafootstool withinteriorstorage 4.5 Whendoingweeklycleanupsthrowoutyouroldandunusedobjectsandkeeponlytheessentialitemsinview.Youcanalsocutbackontheunnecessaryappliances.Movethetablefanoutintothelivingroomduringwinter.Ifyourbedroomisalreadysmalldon'tbringinaTV.Ifyoualreadyhaveonetrymovingitoutandseeifitgainsyouextraspace. A.Mirrorsalsocreateanimpressionofspace B.Removeuntidyandunnecessaryappliances. C.Storerarelyuseditemsinaboxunderyourbed. D.Purchasethepossiblelessfurnitureforyourroom. E.Brightsunlightcankillsomebacteriainyourbedroom. F.Sunlightwillbrightentheroomandmakeitseemmorecheerful. G.Pillowscurtaincoversanddecorativeitemsshouldalsobelightincolor
图是小强用手机透镜和纸盒自制简易“投影仪”它能将手机上的画面放大投射到白墙上．下列说法不正确的是
如图所示电源电压保持6V不变．电流表的量程为0～0.6A电压表量程0～3V定值电阻R1的规格为“10Ω0.5A”滑动变阻器R2的规格为“20Ω1A”．闭合开关为了保证电路安全在变阻器滑片P移动过程中下列说法正确的是
如图是探究电流热效应的实验装置烧瓶内装有质量和初温完全相同的煤油铜丝和镍铬合金丝的长度横截面积均相同则下列说法错误的是
某家用电饭锅的铭牌及原理如图．若不考虑温度对电阻的影响及指示灯消耗的电能则 1开关S接位置选填“a”或“b”时该电饭锅中处于加热状态加热时电阻丝的电阻是Ω当实际电压为198V时电饭锅的实际功率是W． 2该电饭锅中处于保温状态时电路中的电流是多少 3用该电饭锅将2kg的水由20℃加热至100℃水吸收的热量是多少水的比热容为4.2×103J/kg•℃．
Whenonemanofferedtotakeawomanstranger'sbabysothatshecouldrestonarecentflightmanypeopleontheplanewatchedit. ItwassotouchingonepassengerAndreaByrdsaid.Sheshotaphotoofthemancarryingthebabyupanddowntheaisle通道andposteditonFacebookwhereit'ssincegoneviralIwasintearsByrdwroteinthepostwhichhasbeensharedalmost100000times.Notbecausehewaswhiteandshewasblack.butbecauseitshowedmetodaythattherearestillgoodpeopleoutthereinaworldfullofevil. TheSouthwestAirlinesflightwasheadingfromMinne﹣apolistoAtlantaonSeptember5.ThemomMonicaNelsonwhoispregnantsaidshehadbeennervousabouttravelingalonewithher20﹣month﹣oldsonLuke.Whenhegrewannoyedandwouldn'trestthemanseatednexttothemsurprisedherbyofferingtohelpshesaid.Hewalkedupanddowntheaisleholdingtheboysoothinghimtosleep. ItwassuchareliefbecauseIwasalittleworriedtravelingwithhimwithoutmyhusbandtheretohelpoutsaidNelsonateacherwholivesinAtlanta.I'mstillverygrateful﹣﹣hewassokind. ShesaidthemansnameisReidandshelearnedthathealsohasasonnamedLuke. Byrdsaidshewasparticularlytouchedbythescenebecauseshehastwochildrenofherownandcouldputherselfinthemomsshoes.Nowtheirstoryhastouchedthousandsofpeopleacrosstheworldremindingpeoplehowpowerfulasimpleactofkindnesscanbe. It'sgoodtoknowtheworldisnotallbadNelsonsaidTherearesomereallygreatpeopleoutthere. 1Howdidthemanhelpthewomanintheflight? A.Hehelpedthebabytofeelrelaxed B.Hegavehisownseattothewoman C.Hecarriedthebabyupanddownintheair. D.HepostedaphotoofthewomanonFacebook. 2WhatwastheresultafterAndreaByrdpostedthephotoonline? A.Themansuddenlybecamesuccessful. B.Somanypeopleweretouchedbythestory. C.MonicaNelsondecidednottotakeaflightagain. D.Theyoungmomandthemanbecamegoodfriends. 3Whatdoestheunderlinedwordsoothingmeaninparagraph3? A.Topleasesomebodytomakehimsleepforlong B.Toeasesomebodytomakehimfeelcomfortable C.Toforcesomebodytobequietandsilentsoon D.Tosingsongstomakehimfeelhappyslowly 4WhichstatementaboutthemanisTRUE? A.Hisson'snameisLuke B.HeiskindtoAndreaByrd C.Hepreferstopostphotosonline D.Heloveshelpingpregnantwomen
2019年3月10日长征三号乙运载火箭成功将中星6C通信卫星送入太空中星6C卫星是一颗用于广播和通信的地球同步卫星图是火箭发射时的场景．下列说法不正确的是
随着手机及其他电子设备的普及低头族到处可见大街上公交车上……以年轻人为主针对这一问题请写一篇倡议书呼吁人们尽量抬起头来…… 注意1.行文连贯流畅2.参考词汇低头族phubber3.词数80词左右
下列诗句中有关光现象的说法正确的是
在相同加热条件下分别对等质量的ab两液体加热如图甲根据测得数据分别描绘出两液体的温度随加热时间变化的图象如图乙．不计热量损失则结合图中信息作出的下列推断正确的是
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