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现有一数列3,9,27,81,243,729,2187,反映其平均水平最好用______。
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有一数列的首项既不是0也不是1而是由下列规则决定位于首项后的每一项都等于1减去前一项的倒数以此类推.
[中国农业银行]现有一数列3927812437292187反映其平均水平最好用
算术平均数
调和平均数
几何平均数
众数
设有一个空栈栈顶指针为1000H十六进制下同现有输入序列为12345经过PUSHPUSHPOP
1002H
1004H
1005H
1003H
现有一数列3927812437292187反映其平均水平最好用
算术平均数
分位数
几何平均数
中位数
在同一数列中各逐期增长量之积等于累计增长量
按同一数量标志分组时
只可能编制一个分组数列
只可能编制组距数列
只可能编制一个组距数列
可能编制多种分布数列
只可能编制分组数列
有一数列594438229032其中位数是
38
22
41
30
对同一数列同时计算平均差和标准差二者必须相等
设有一个空栈栈顶指针为1000H十六进制下同现有输入序列为12345经过PUSHPUSHPOP
5，4，3，2，1
2，1
2，3
3，4
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2011年我国全年货物进出口总额36421亿美元比上年增长22.5%其中出口18986亿美元增加20.3%进口17435亿美元增长24.9%进出口差额出口值与进口值差额的绝对值1551亿美元比上年减少265亿美元 2007—2011年我国全年货物出口额与上一年相比增长超过30%的年份有.
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Livinginthedesertinvolvesalotofproblemswatershortageistheworst
Acommitteehasbeenbythecounseltolookintothecausesofunemployment
2011年我国全年货物进出口总额36421亿美元比上年增长22.5%其中出口18986亿美元增加20.3%进口17435亿美元增长24.9%进出口差额出口值与进口值差额的绝对值1551亿美元比上年减少265亿美元 表中所列举的国家和地区中2011年与我国货物进出口贸易差额最大的是.
Morethanacenturyagotherelationshipbetweenglacialiceandtheamountofwaterintheoceanbasinswasfirstseen.Whenthegreaticesheetcoveredvastlandareasthesealevelwasloweredbecausethenormalreturnofwaterfromlandtotheoceanwasreduced.AsaresultthesealevelroseasIceAgeglaciersmeltedallowingthemeltedwaterstoflowintotheocean.Ifalltheglacialiceonthesurfaceoftheearthtodayshouldmeltthesealevelmightrisebymorethan150feet.Shorelinevariationsarealsoproducedthroughelevationordepressionoftheland.Duringtimesofglacierformationsthegreatweightoftheiceslowlydepressedtheearth’scrust.Removaloftheweightthroughglaciermeltingallowedtheslowreturnofthecrusttoitsformerposition.ChangesintheGreatIceclimatesfromcoolandwettowarmanddryproducedclimatechangesfarfromtheglaciatedarea.Forexampleattimesofcool-wetglacialclimateslevelsofinlandlakesroseincontrasttothedepressionofsealevel.Duringthewarm-dryinterglacialclimateslakelevelswerelowered.TheancientlakeBonnevillelargestoftheglaciallakesinWesternUnitedStatesoncecoveredmorethan20000squaremiles.Ithadamaximumdepthofmorethan1000feet.GreatSaltLakeinUtahistheshrunkenremnantofthisoncelargelake. AlthoughthefirsttimethatearlymanwalkedontheearthisuncertainheislargelyaproductoftheGreatIceAge.Presentinformationshowsthatduringthistimeheevolvedrapidlybothphysicallyandculturally.HismostprimitivetoolsandskeletalremainshavebeenfoundinsomeoftheoldestdepositscontemporarywiththeGreatIceAgeinAfricaAsiaandEurope.Theseareoftenassociatedwithremainsofextinctanimals.WiththedisappearanceofthegreaticesheetstheBronzeandIronAgeculturesevolved.Aboutthistimemanyanimalssuitedtocoolerclimatesdied. AlthoughmuchremainstobelearnedthestoryoftheGreatIceAgeisbeingunfoldedthroughtheeffortsofspecialistsinmanyfields.RecordingfieldobservationnewtheoriesandmethodsandworldwidestudiesofexistingglaciersarebringingaclearerunderstandingoftheGreatIceAge. ThebestsourceofinformationabouttheGreatIceAgeisobtainedfrom
AlthoughwealreadyknowagreatdealaboutinfluenzaandalthoughtheWorldHealthOrganizationisconstantlycollectingdetailedinformationfromitschainofinfluenzareferencelaboratoriesthroughouttheworlditisextremelydifficultforepidemiologists流行病专家whostudyinfectiousdiseasetopredictwhenandwherethenextfluepidemicwilloccurandhowsevereitwillbe. TherearethreekindsofinfluenzavirusknownasABandC.InfluenzaCvirusisrelativelystableandcausesmildinfectionsthatdonotspreadfarthroughthepopulation.TheAandBtypesareunstableandareresponsiblefortheepidemicsthatcausefrequentconcern.Followinganyvirusattackthehumanbodybuildsupantibodieswhichconferimmunitytothatstrainofvirusbutaviruswiththecapacitytochangeitscharacterisabletoby-passthisprotection.VariabilityislessdevelopedintheinfluenzaBviruswhichaffectsonlyhumanbeings.AninfluenzaBvirusmaycauseawidespreadepidemicbutwillhavelittleeffectifintroducedintothesamecommunitysoonafterwardssincenearlyeveryonewillhavebuiltupantibodiesandwillbeimmune.TheinfluenzaAviruswhichaffectsanimalsalsoisextremelyunstableandisresponsibleforsomeoftheworstoutbreaksofthediseasesuchastheunparalleledpandemicorworldepidemicof1918-1919whenabouthalftheworld’spopulationwereinfectedandabouttwentymillionpeoplediedsomefrompneumoniacausedbythevirusitselfandsomefromsecondarycomplications并发症causedbybacteria. Accuratepredictionisdifficultbecauseofthecomplicationofthefactors.Aparticularvirusmayberelatedtoonetowhichsomeofthepopulationhavepartialinvolvedimmunity.Theextenttowhichitwillspreadwilldependonfactorssuchasitsownstrengthorvirulencetheeasewithwhichitcanbetransmittedandthestrengthoftheoppositionitencounters.Scientistshoweverhaveareliablegeneralpictureoftheworldsituation.InfluenzaAattacksusinwaveseverytwoorthreeyearswhileinfluenzaBwhichtravelsmoreslowlylaunchesitsmainassaultseverythreetosixyears.Theoutbreaksvaryfromisolatedcasestoepidemicsinvolvingatenthormoreofthepopulation.Wemayconfidentlyprophesythatsoonerorlaterlargenumbersofpeoplewillbefeelingtheunpleasanteffectsofsomekindofinfluenzavirus. AccordingtotheauthorwhichofthefollowingisNOTtrueaboutinfluenza
Morethanacenturyagotherelationshipbetweenglacialiceandtheamountofwaterintheoceanbasinswasfirstseen.Whenthegreaticesheetcoveredvastlandareasthesealevelwasloweredbecausethenormalreturnofwaterfromlandtotheoceanwasreduced.AsaresultthesealevelroseasIceAgeglaciersmeltedallowingthemeltedwaterstoflowintotheocean.Ifalltheglacialiceonthesurfaceoftheearthtodayshouldmeltthesealevelmightrisebymorethan150feet.Shorelinevariationsarealsoproducedthroughelevationordepressionoftheland.Duringtimesofglacierformationsthegreatweightoftheiceslowlydepressedtheearth’scrust.Removaloftheweightthroughglaciermeltingallowedtheslowreturnofthecrusttoitsformerposition.ChangesintheGreatIceclimatesfromcoolandwettowarmanddryproducedclimatechangesfarfromtheglaciatedarea.Forexampleattimesofcool-wetglacialclimateslevelsofinlandlakesroseincontrasttothedepressionofsealevel.Duringthewarm-dryinterglacialclimateslakelevelswerelowered.TheancientlakeBonnevillelargestoftheglaciallakesinWesternUnitedStatesoncecoveredmorethan20000squaremiles.Ithadamaximumdepthofmorethan1000feet.GreatSaltLakeinUtahistheshrunkenremnantofthisoncelargelake. AlthoughthefirsttimethatearlymanwalkedontheearthisuncertainheislargelyaproductoftheGreatIceAge.Presentinformationshowsthatduringthistimeheevolvedrapidlybothphysicallyandculturally.HismostprimitivetoolsandskeletalremainshavebeenfoundinsomeoftheoldestdepositscontemporarywiththeGreatIceAgeinAfricaAsiaandEurope.Theseareoftenassociatedwithremainsofextinctanimals.WiththedisappearanceofthegreaticesheetstheBronzeandIronAgeculturesevolved.Aboutthistimemanyanimalssuitedtocoolerclimatesdied. AlthoughmuchremainstobelearnedthestoryoftheGreatIceAgeisbeingunfoldedthroughtheeffortsofspecialistsinmanyfields.RecordingfieldobservationnewtheoriesandmethodsandworldwidestudiesofexistingglaciersarebringingaclearerunderstandingoftheGreatIceAge. WhichofthefollowingisNOTimpliedinthepassage
Ifthesalinityofoceanwaterisanalyzeditisfoundtovaryonlyslightlyfromplacetoplace.Neverthelesssomeofthesesmallchangesareimportant.Therearethreebasicprocessesthatcauseachangeinoceanicsalinity.Oneoftheseisthesubtractionofwaterfromtheoceanbymeansofevaporation—conversionofliquidwatertowatervapor.Inthismannerthesalinityisincreasedsincethesaltsstaybehind.Ifthisiscarriedtotheextremeofcoursewhitecrystalsofsaltwouldbeleftbehind;thisbythewayishowmuchofthetablesaltweuseisactuallyobtained. Theoppositeofevaporationisprecipitationsuchasrainbywhichwaterisaddedtotheocean.Heretheoceanisbeingdilutedsothatthesalinityisdecreased.Thismayoccurinareasofhighrainfallorincoastalregionswhereriversflowintotheocean.Thussalinitymaybeincreasedbythesubtractionofwaterbyevaporationordecreasedbytheadditionoffreshwaterbyprecipitationorrunoff. Normallyintropicalregionswherethesunisverystrongtheoceansalinityissomewhathigherthanitisinotherpartsoftheworldwherethereisnotasmuchevaporation.Similarlyincoastalregionswhereriversdilutetheseasalinityissomewhatlowerthaninotheroceanicareas. Athirdprocessbywhichsalinitymaybealteredisassociatedwiththeformationandmeltingofseaice.Whenseawaterisfrozenthedissolvedmaterialsareleftbehind.Inthismannerseawaterdirectlybeneathfreshlyformedseaicehasahighersalinitythanitdidbeforetheiceappeared.Ofcoursewhenthisicemeltsitwelltendtodecreasethesalinityofthesurroundingwater. IntheWeddellSeaoffAntarcticathedensestwaterintheoceansisformedasaresultofthisfreezingprocesswhichincreasesthesalinityofcoldwater.Thisheavywatersinksandisfoundinthedeeperportionsofoceansoftheworld. Whatdoesthewordsubtractioninthefourthlineofthefirstparagraphmean
AlthoughwealreadyknowagreatdealaboutinfluenzaandalthoughtheWorldHealthOrganizationisconstantlycollectingdetailedinformationfromitschainofinfluenzareferencelaboratoriesthroughouttheworlditisextremelydifficultforepidemiologists流行病专家whostudyinfectiousdiseasetopredictwhenandwherethenextfluepidemicwilloccurandhowsevereitwillbe. TherearethreekindsofinfluenzavirusknownasABandC.InfluenzaCvirusisrelativelystableandcausesmildinfectionsthatdonotspreadfarthroughthepopulation.TheAandBtypesareunstableandareresponsiblefortheepidemicsthatcausefrequentconcern.Followinganyvirusattackthehumanbodybuildsupantibodieswhichconferimmunitytothatstrainofvirusbutaviruswiththecapacitytochangeitscharacterisabletoby-passthisprotection.VariabilityislessdevelopedintheinfluenzaBviruswhichaffectsonlyhumanbeings.AninfluenzaBvirusmaycauseawidespreadepidemicbutwillhavelittleeffectifintroducedintothesamecommunitysoonafterwardssincenearlyeveryonewillhavebuiltupantibodiesandwillbeimmune.TheinfluenzaAviruswhichaffectsanimalsalsoisextremelyunstableandisresponsibleforsomeoftheworstoutbreaksofthediseasesuchastheunparalleledpandemicorworldepidemicof1918-1919whenabouthalftheworld’spopulationwereinfectedandabouttwentymillionpeoplediedsomefrompneumoniacausedbythevirusitselfandsomefromsecondarycomplications并发症causedbybacteria. Accuratepredictionisdifficultbecauseofthecomplicationofthefactors.Aparticularvirusmayberelatedtoonetowhichsomeofthepopulationhavepartialinvolvedimmunity.Theextenttowhichitwillspreadwilldependonfactorssuchasitsownstrengthorvirulencetheeasewithwhichitcanbetransmittedandthestrengthoftheoppositionitencounters.Scientistshoweverhaveareliablegeneralpictureoftheworldsituation.InfluenzaAattacksusinwaveseverytwoorthreeyearswhileinfluenzaBwhichtravelsmoreslowlylaunchesitsmainassaultseverythreetosixyears.Theoutbreaksvaryfromisolatedcasestoepidemicsinvolvingatenthormoreofthepopulation.Wemayconfidentlyprophesythatsoonerorlaterlargenumbersofpeoplewillbefeelingtheunpleasanteffectsofsomekindofinfluenzavirus. Whichofthefollowingisthemostdangerousvirusaccordingtothepassage
近年来浙江省商品交易市场呈现稳步发展态势2009年浙江省共有亿元以上商品交易市场670家比上年增加31家营业面积2298万平方米出租摊位39万个实现成交额9647亿元比上年增长7.8%从市场成交额看成交额达10亿元以上的商品交易市场189家占全部市场个数的28.2%实现成交额8139亿元其中10亿～50亿元的商品交易市场有156家50亿～100亿元的商品交易市场有17家100亿元以上的商品交易市场有16家从商品分类销售看一是与城乡居民生活息息相关的商品销售稳定增长其成交额最大所占比例最高食品饮料烟酒类成交额2127亿元比上年增长10.1%服装鞋帽类商品销售比重居第二位成交额2077亿元比上年增长9.2%二是随着居民消费水平提高和消费需求的多元化个人享受发展及服务性消费所带动的商品成交活跃文化办公用品类商品成交额135亿元同比增长20.1%体育娱乐用品类商品成交额18亿元同比增长25.6%家用电器和音像器材类商品成交额52亿元同比增长36%儿童玩具类商品成交额31亿元同比增长15.9%三是汽车销售保持快速增长所占比重有所上升汽车类实现成交额606亿元同比增长29.9%比上年提高1.1个百分点2007年浙江省汽车类销售成交额约为______
大城市的公共运输当局正在同赤字作斗争乘客抱怨延误和故障增多服务有所减少以及车费的增加因为所有这些原因以及因为汽油价格并不是高不可攀使得使用公共交通乘客的数目已经下降增加了赤字下列哪项被上述陈述所支持
Ittookthemseveralweekstothewildhorse
近年来浙江省商品交易市场呈现稳步发展态势2009年浙江省共有亿元以上商品交易市场670家比上年增加31家营业面积2298万平方米出租摊位39万个实现成交额9647亿元比上年增长7.8%从市场成交额看成交额达10亿元以上的商品交易市场189家占全部市场个数的28.2%实现成交额8139亿元其中10亿～50亿元的商品交易市场有156家50亿～100亿元的商品交易市场有17家100亿元以上的商品交易市场有16家从商品分类销售看一是与城乡居民生活息息相关的商品销售稳定增长其成交额最大所占比例最高食品饮料烟酒类成交额2127亿元比上年增长10.1%服装鞋帽类商品销售比重居第二位成交额2077亿元比上年增长9.2%二是随着居民消费水平提高和消费需求的多元化个人享受发展及服务性消费所带动的商品成交活跃文化办公用品类商品成交额135亿元同比增长20.1%体育娱乐用品类商品成交额18亿元同比增长25.6%家用电器和音像器材类商品成交额52亿元同比增长36%儿童玩具类商品成交额31亿元同比增长15.9%三是汽车销售保持快速增长所占比重有所上升汽车类实现成交额606亿元同比增长29.9%比上年提高1.1个百分点根据材料下列结论中不能推出的是______
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