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计算（直接写结果）：[（-x）³]²=
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计算下列各题直接写结果 53°25′28″×5
用甲乙两种培养基对某细菌进行培养得结果如下表检验两种方法的培养结果有无差别可选用的最适当方法是
完全随机设计
2
检验
配对设计X
2
检验
配对设计校正X
2
检验
完全随机设计校正X
2
检验
直接计算概率法
三相对称电路分析计算可以归结为一相电路计算其他两相可依次滞后120°直接写 出
计算直接写出结果－7--4=_____
计算x-lx+2的结果是
计算直接写结果x²·x²³÷x5=
13分如图1正方形AEGH的顶点E.H.在正方形ABCD的边上直接写出HD∶GC∶EB的结果不必写计
定义一种新运算*a*b=2a－b比如2*－3=2×2－－3=7.1直接写出－3*2的结果是2若3*x
间接费以直接费为计算基时正确的计算公式应该是间接费＝
直接费中的人工费合计X间接费费率
直接费合计X间接费费率
直接费中的机械费合计X间接费费率
直接费中的人工费和机械费合计X间接费费率
DR的中文全称是
计算机X线摄影
直接数字化计算机X线摄影
间接数字化计算机X线摄影
直接数字平板X线成像系统
X线电子计算机断层扫描
1如图1菱形AEGH的顶点EH在菱形ABCD的边上且∠BAD=60°请直接写出HDGCEB的结果不
计算2x3-3x2y-2xy2-x3-2xy2＋y3＋-x3＋3x2y-y3的值其中x=0.5y=-
计算下列各题直接写结果 54°20′÷6
在计算机系统中CPU可以直接读/写中的内容
光盘
ROM
硬盘
RAM
辅助生产费用分配的直接分配法具有特点.
核算简便
核算工作复杂
计算结果准确
计算结果不够准确
计算并观察下列各式x-1x+1=______x-1x2+x+1=______x-1x3+x2+x+1
若A.x1y1B.x2y2是函数y=x2-4x+3图象上的两点且x1
计算直接写出结果4.5＋－4.5=_______
若有语句READ8REC=6ERR=10BWRITE86XY则关于它们的描述其中哪一条描述是正确的?
直接有格式读，顺序有格式写
直接无格式读，直接无格式写
顺序有格式读，顺序无格式写
直接无格式读，顺序有格式写
计算x2∙x的结果等于__________.
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在某温度时将nmol•L﹣1氨水滴入10mL1.0mol•L﹣1盐酸中溶液pH和温度随加入氨水体积变化曲线如图所示下列有关说法正确的是
MaythefirstisanimportantdateinthecollegeadmissionprocessintheUnitedStates.Thisisthelastdayforhighschoolseniorstoacceptorrejectoffersofadmissioninthefall.Butaccordingtoarecentreportthereisagreatchange.Acceptanceratesatthetopcollegesthisyearwerelowerthanever.1 Thesedayscollegeapplicantsareapplyingtomorecollegesbecauseonlineandcommonapplicationsmaketheprocesseasier.2Ontheotherhanddecidingstudentsfortopcollegestoacceptcanbedifficultbecauseittakesmuchtime.Studentsmaynotlikebeingputonwaitinglists.Alsocommoncollegesworkmoretogetthestudentstheyaccepttoacceptthem.Somecollegesholdvisitingdaysthatofferachancetoattendclassesandstayovernight.Someuniversitiessendgifts.3 Formanyfamiliesthemostimportantthingcollegescandoisshowthemthemoneyespeciallythisyear;theweakeconomymakesparentsnervous.4Therecentproblemsthatspreadfromthehousingmarkettocreditmarketshaveevenaffectedstudent'sloans.Solatelytopschoolshavetosparelotsofmoneytoincreasetheirfinancialaidforstudents. 5TheEducationDepartmentexpectsthenumberofhighschoolgraduatestostarttogodown.Thiswillhappenasthelastofthechildrenofthebabyboomgenerationfinishhighschool.Thenumberisnotexpectedtostartrisingagainuntil2015. A.Besidestopcollegesarefacingchangesinthepopulation. B.Whatcontributestoit? C.Butamistakecanbecostlyifithappens. D.Buttopcollegesignorethem. E.TheyhaveinternationalstudentswhoknowEnglish. F.Itcanmeanseveralacceptancestochoosefrom. G.Theycannotaffordcollegeasplanned. 1. 2. 3. 4. 5.
已知fx是定义在R上的偶函数且x≤0时fx＝log2﹣x+1 1求f0f1的值 2求函数fx的解析式 3若fa﹣1＞1求实数a的取值范围．
幂函数fx的图象过点则f4＝
设复数z满足则|z|＝
对于函数fx若存在x∈R使fx0＝x0成立则称x0为fx的不动点．已知函数fx＝ax2+b+1x+b﹣1a≠0． 1当a＝1b＝2时求函数fx的不动点 2若对任意实数b函数fx恒有两个相异的不动点求a的取值范围 3在2的条件下若fx的两个不动点为x1x2且fx1+x2＝求实数b的取值范围．
Morethan50yearsagothepsychologistCarlRogerssuggestedthatsimplylovingourchildrenwasn'tenough.Wehavetolovethemunconditionallyhesaid﹣forwhotheyarenotforwhattheydo.Howeverweareoftengivenmuchadviceontheopposite﹣﹣﹣conditionalparenting:turnuptheparentallovewhenthey'regoodholditbackwhenthey'renot. Aproblemwithconditionalparentingisthatitmightbejustanothermethodofcontrolinotherwordspunishment.Rogerwarnedthatchildrenwerelikelynottogettheunconditionalacceptanceandlovewhenitcountedintheirgrowth. InaresearchdonebyEdwardL.DecialeadingAmericanexpertonthepsychologyofmotivationmorethan100collegestudentswereaskedwhetherthelovetheyhadreceivedfromtheirparentshadseemedtodependonwhethertheyhadsucceededinschoolpracticedhardforsportsorcontrolledfeelingslikeangerandfear. Itturnedoutthatchildrenwhoreceivedconditionallovewereindeedsomewhatmorelikelytoactastheparentwanted.Butitcameatahighprice.Firstthesechildrentendedtodisliketheirparents.Secondtheyadmittedthatthewaytheyactedoftenowedmoretoastronginternalpressurethantoarealsenseofchoice.Moreovertheirhappinessaftersucceedingatsomethingwasusuallyshort﹣livedandtheyoftenfeltashamed. InpracticeDr.Deciandotherssuggestedthatunconditionalacceptancebyparentsaswellasteachersshouldbeaccompaniedbyexplainingreasonsforrequestsofferingopportunitiesforthechildtotakepartinmakingdecisionsbeingencouragingwithoutcontrollingandactivelyimagininghowthingslookfromthechild'spointofview.Thelastofthesefeaturesisthemostimportantinunconditionalparenting. 1.Fromthepassagewecanconcludethat. A.parentloveisprobablyoftenusedtopunishourchildren B.unconditionallovemeansthatparentshavenorighttoguidetheirchildren C.unconditionallovecanallowachildtomakedecisionsallbyhimself D.successfulchildrenbenefitalotfromconditionalparenting 2.Fromthefourthparagraphwecansee. A.conditionalloveisplayingapositiveroleineducatingthechildren B.conditionalparentingcanbeharmfultotheparent﹣childrelationship C.thehappinessandjoywithsuccesscaninspirethechildrenforlong D.theadvantagesofconditionalparentingoverweighthedisadvantages 3.isthemostimportantthingwhenparentsofferunconditionallove. A.Explainingreasonsforrequests B.Lettingthechildtakepartindecision﹣makingprocess C.Beingencouragingandwithoutcontrolling D.Whetherthechildfeelbeinglovedandaccepted
若θ∈[]sin2θ＝则sinθ＝
已知函数fx＝x∈R时则下列结论正确的是 1∀x∈R等式f﹣x+fx＝0恒成立 2∃m∈01使得方程|fx|＝m有两个不等实数根 3∀x1x2∈R若x1≠x2则一定有fx1≠fx2 4∃k∈1+∞使得函数gx＝fx﹣kx在R上有三个零点．
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.每处错误仅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Λ并在其下面写出该加的词. 删除:把多余的词用斜线﹨划掉. 删除: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. Thesummerholidayiscoming.MyclassmatesandIaretalkingabouthowtododuringtheholiday.Wecanchosebetweenstayingathomeandtakeatrip.Ifwestayathomeitiscomfortablebutthereisnoneedtospendmoney.Butinthatcasewewilllearnlittleaboutworld.Ifwegoonatripabroadwecanbroadenyouviewandgainknowledgeswecannotgetfrombooks.Someclassmatessuggestwecangotoplacesofinterestnearby.Ithoughtthatitisagoodidea.Itdoesnotcostmanyyetwecanstilllearnalot.
一个与球心距离为1的平面截球所得的圆面面积为2π则球的表面积为．
若a＝20.5b＝logπ3c＝log20.5则
中国古代数学名著九章算术中有这样一个问题今有牛马羊食人苗苗主责之栗五斗．羊主曰“我羊食半马．”马主曰“我马食半牛．”今欲哀偿之问各出几何此问题的译文是今有牛马羊吃了别人的禾苗禾苗的主人要求赔偿5斗栗．羊主人说“我羊所吃的禾苗只有马的一半．”马主人说“我马所吃的禾苗只有牛的一半．”打算按此比率偿还他们各应偿还多少已知牛马羊的主人各应偿还栗a升b升c升1斗为10升则下列判断正确的是
下列判断正确的是
低浓度SO2废气的处理是工业难题目前常用的两种方法如下 方法Ⅰ图1 1反应器中发生反应3H2g+SO2g⇌H2Sg+2H2Og ①H2S的稳定性比H2O填“强”或“弱”原因是元素的非金属性减弱． ②SO2的平衡转化率随温度T压强P的变化如图2所示随温度升高化学平衡常数K的变化趋势是．比较P1和P2的大小关系请简述理由． 2工业上先用二乙醇胺吸收H2S然后在再生塔中加热分解重新获得H2S主要目的是． 3燃烧室内1molH2S气体完全燃烧生成固态硫磺及气态水释放akJ能量其热化学方程式为． 方法Ⅱ图4 4Na2SO3溶液吸收SO2的化学方程式是． 5通过电解法可分离NaHSO3与Na2SO3混合物实现Na2SO3的循环利用示意图如图3简述分离NaHSO3与Na2SO3混合物的原理．
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文.文中共涉及10处语言错误每句中最多有两处.每处错误仅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\划掉. 修改:在错的词下画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. WhilevisitFrancewedecidetodosomeshopping.Notfarfromthehoteltherewasashopwithallkindofclothinghangingup.Whenwewentintotheshopawomancameupandaskedthatshecouldhelpusbutwesaidthatwewouldlikelookaroundonourown.Helookedatusratherstrange.Nothavingfoundanythingweneededwethankedthewomanandwereleft.SuddenlymyhusbandstartedtolaughpointingtoasmallsignwithEnglishwhichreadsDRY﹣CLEANINGSHOP.Ifyouareasmokerpleasedon'tsmokehere.
若函数fx＝e2x﹣a﹣1x+1在01上递减则a的取值范围是
XYZW为四种短周期主族元素且原子序数依次递增其中XZ同族Y是短周期主族元素中原子半径最大的X原子最外层电子数是核外电子层数的3倍下列说法正确的是
FiveyearsagowhenItaughtartataschoolinSeattleIusedTinkertoysasatestatthebeginningofatermtofindoutsomethingaboutmystudents.IputasmallsetofTinkertoysinfrontofeachstudentandsaid:MakesomethingoutoftheTinkertoys.Youhave45minutestoday﹣and45minuteseachdayfortherestoftheweek. Afewstudentshesitatedtostart.Theywaitedtoseetherestoftheclasswoulddo.Severalotherscheckedtheinstructionsandmadesomethingaccordingtooneofthemodelplansprovided.Anothergroupbuiltsomethingoutoftheirownimaginations. OnceIhadaboywhoworkedexperimentallywithTinkertoysinhisfreetime.Hisconstructionsfilledashelfintheartclassroomandagoodpartofhisbedroomathome.Iwasdelightedatthepresenceofsuchastudent.Herewasanexceptionallycreativemindatwork.HispresencemeantthatIhadanunexpectedteachingassistantinclasswhosecreativitywouldinfect感染otherstudents. Encouragingthiskindofthinkinghasadownside.Irantheriskoflosingthosestudentswhohadadifferentstyleofthinking.WithoutfailonewoulddeclareButI'mjustnotcreative. Doyoudreamatnightwhenyou'reasleep? Ohsure. Sotellmeoneofyourmostinterestingdreams.Thestudentwouldtellsomethingwildlyimaginative.Flyingintheskyorinatimemachineorgrowingthreeheads.That'sprettycreative.Whodoesthatforyou? Nobody.Idoit. Really﹣atnightwhenyou'reasleep? Sure. Trydoingitinthedaytimeinclassokay? 25.TheteacherusedTinkertoysinclassinorderto? A.knowmoreaboutthestudents B.makethelessonsmoreexciting C.raisethestudents'interestinart D.teachthestudentsabouttoydesign 26.WhatdoweknowabouttheboymentionedinParagraph3? A.Helikedtohelphisteacher. B.Hepreferredtostudyalone. C.Hewasactiveinclass. D.Hewasimaginative. 27.WhatdoestheunderlinedworddownsideinParagraph4probablymean? A.Mistake. B.Drawback. C.Difficulty. D.Burden. 28.Whydidtheteacheraskthestudentstotalkabouttheirdreams? A.Tohelpthemtoseetheircreativity. B.Tofindoutabouttheirsleepinghabits. C.Tohelpthemtoimprovetheirmemory. D.Tofindoutabouttheirwaysofthinking.
已知函数fx的图象如图则满足f2x•flgx2﹣6x+120≤0的x的取值范围是．
有机化合物N是合成药物洛索洛芬钠治疗关节炎的重要中间体其合成路线如下 已知RR′R″R1R2R3R4均为烃基 ⅰ．RCNRCOOH ⅱ．R′CH＝CHR″R′COOH+R″COOH ⅲ． 1B的化学名称是． 2D能使溴水褪色其核磁共振氢谱有两组峰D的结构简式为． 3已知烃A的一元取代产物只有一种A的结构简式为． 4C→E的反应试剂和条件是． 5G的结构简式为． 6下列说法正确的是． a．常温下在水中的溶解度乙二酸＞G＞M b．B→D→F均为取代反应 c．H能发生加聚缩聚反应 7M→N的化学方程式为．
水处理技术在生产生活中应用广泛． 1根据水中Ca2+Mg2+的多少把天然水分为硬水和软水硬水必须经过软化才能使用． ①硬水软化的方法通常有和离子交换法．离子交换树脂使用了一段时间后逐渐由NaR型变为CaR2或MgR2型而失去交换能力．把CaR2或MgR2型树脂置于中浸泡一段时间便可再生． ②当洗涤用水硬度较大时洗衣粉与肥皂相比洗涤效果较好原因是． 2工业上常用绿矾做混凝剂除去天然水中含有的悬浮物和胶体为了达到更好的效果要将待处理的水pH调到9左右再加入绿矾．请解释这一做法的原因．用必要的离子方程式和文字描述． 3最近我国某地苯胺大量泄漏于生活饮用水的河道中当地采取的应急措施之一是向河水中撒入大量的活性炭活性炭的作用是．
ThatcoldJanuarynightIwasgrowingsickofmylifeinSanFrancisco.ThereIwaswalkinghomeatoneinthemorningafteratiringpracticeatthetheatre.WithopeningnightonlyaweekagoIwasstilllearningmylines.Iwashavingtroubledealingwithmypart﹣timejobatthebankandmyactingatnightatthesametime.AsIwalkedIthoughtseriouslyaboutgivingupbothactingandSanFrancisco.Citylifehadbecometoomuchforme. AsIwalkeddownemptystreetsundertallbuildingsIfeltverysmallandcold.Ibeganrunningbothtokeepwarmandtokeepawayfromanypossiblerobbers.Veryfewpeoplewerestilloutexceptafewsad﹣lookinghomelesspeopleunderblankets. AboutablockfrommyapartmentIheardasoundbehindme.Iturnedquicklyhalfexpectingtoseesomeonewithaknifeoragun.Thestreetwasempty.AllIsawwasashiningstreetlight.StillthenoisehadmademenervoussoIstartedtorunfaster.NotuntilIreachedmyapartmentbuildingandunlockedthedoordidIrealizewhatthenoisehadbeen.Ithadbeenmywalletfallingtothesidewalk. SuddenlyIwasn'tcoldortiredanymore.IranoutofthedoorandbacktowhereI'dheardthenoise.AlthoughIsearchedthesidewalkanxiouslyforfifteenminutesmywalletwasnowheretobefound. JustasIwasabouttogiveupthesearchIheardthegarbagetruckpulluptothesidewalknexttome.WhenavoicecalledfromtheinsideAlisaCamacho?IthoughtIwasdreaming.Howcouldthismanknowmyname?Thedooropenedandoutjumpedasmallred﹣hairedmanwithanamusedlookinhiseye.Isthiswhatyou'relookingfor?heaskedholdingupasmallsquareshape. Itwasnearly3A.M.bythetimeIgotintobed.Iwouldn'tgetmuchsleepthatnightbutIhadgottenmywalletback.Ialsohadgottenbacksomeenjoymentofcitylife.Irealizedthatthecitycouldn'tbeabadplaceaslongaspeoplewerewillingtohelpeachother. 1.Howdidthewriterfeelwhenshewaswalkinghomeafterwork? A.Coldandsick B.Fortunateandhelpful C.Satisfiedandcheerful D.Disappointedandhelpless 2.Onherwayhomethewriter. A.lostherwalletunknowingly B.wasstoppedbyagarbagetruckdriver C.wasrobbedofherwalletbyanarmedman D.foundsomehomelesspeoplefollowingher 3.Inthefifthparagraphwhydidthewritersayshewasdreaming? A.Someoneofferedtotakeherbackhome. B.Ared﹣hairedmancametoseeher. C.Sheheardsomeonecallhername D.Herwalletwasfoundinagarbagetruck. 4.Fromthetextwecaninferthatthewriter. A.wouldstopworkingatnight B.wouldstayoninSanFrancisco C.wouldmakefriendswithcleaners D.wouldgiveupherjobatthebank.
下列有关实验操作现象及结论解释都没有科学性错误的是
不等式的解集为M求函数fx＝log22xlog2x∈M的值域．
AnewcollectionofphotosbringsanunsuccessfulAntarcticvoyagebacktolife. FrankHurley'spictureswouldbeoutstanding﹣﹣﹣﹣undoubtedlyfirst﹣ratephoto﹣journalism﹣﹣﹣iftheyhadbeenmadelastweek.Infacttheywereshotfrom1914through1916mostofthemafteradisastrousshipwreck海难byacameramanwhohadnoreasonableexpectationofsurvival.Manyoftheimageswerestoredinanicechestunderfreezingwaterinthedamagedwoodenship. TheshipwastheEnduranceasmalltightNorwegian﹣builtthree﹣masterthatwasintendedtotakeSirErnestShackletonandasmallcrewofseamenandscientists27meninalltothesouthernmostshoreofAntarctica'sWeddellSea.FromthatpointShackletonwantedtoforceapassagebydogsled雪橇acrossthecontinent.ThejourneywasintendedtoachievemorethanwhatCaptainRobertFalconScotthaddone.CaptainScotthadreachedtheSouthPoleearlyin1912buthaddiedwithhisfourcompanionsonthemarchback. AswriterCarolineAlexandermakesclearinherforcefulandwell﹣researchedstoryTheEnduranceadventuringwaseventhenathoroughlycommercialeffort.Scott'slastjourneycompletedasbelayinatentdyingofcoldandhungercaughttheworld'simaginationandafilmmadeinhishonordrewcrowds.ShackletonaonetimeBritishmerchant﹣navyofficerwhohadgottowithin100milesoftheSouthPolein1908startedabusinessbeforehis1914voyagetomakemoneyfrommovieandstillphotography.FrankHurleyaconfidentandgiftedAustralianphotographerwhoknewtheAntarcticwashiredtomaketheimagesmostofwhichhaveneverbeforebeenpublished. 33.WhatdoweknowaboutthephotostakenbyHurley? A.Theyweremadelastweek B.Theyshowedunderseasceneries C.Theywerefoundbyacameraman D.Theyrecordedadisastrousadventure 34.WhoreachedtheSouthPolefirstaccordingtothetext? A.FrankHurley B.ErnestShackleton C.RobertFalconScott D.CarolineAlexander 35.WhatdoesAlexanderthinkwasthepurposeofthe1914voyage? A.Artisticcreation B.Scientificresearch C.Moneymaking D.Treasurehunting.
如图是一正方体被过棱的中点MN顶点A和N顶点DC1的两上截面截去两个角后所得的几何体则该几何体的正视图为
在空间下列命题中正确的是
化学与人类社会生产生活密切相关下列说法正确的是
Asweallknowgamesplayaveryimportantroleinthegrowthofchildren.Childrenshouldgrowalongwithplayinggames;for1playinggamestheycannotonlyacquireknowledgebutalsodeveloptheirabilitiestogetalongwithothers. Howevermostchildrenare2facewithacompletelydifferentsituation.Mostparentsfearthatgameswillpreventchildrenfromincreasingnewknowledgeand3thechildrenwillfailinthefutureexaminations.Soinsteadof4letthechildrenthemselvesfindandlearnnaturallyfromtheirsurroundingstheyforcetheirchildrentotakepartin5varietykindsofclasseslearningEnglishplaying6pianoorpracticingdrawingetc.What'smoresomeparentsputawaythechildren'stoyswhichareveryusefulindevelopingchildren's7imagineandpracticalabilities. Hereisapieceofgoodadvicetothoseparents:8youwanttoexpectyourchildtobeabletoaccomplishsomethingyoumustfirstofalldevelophisabilitytoadapt9thenewsurroundings.Thatcram填鸭式的educationcanleadtonothing10afailureinthechildren'sgrowth. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10.
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