德商将裁员9000人 并取消今年股票分红

一分彩漏洞

2018-08-27

KwabenaBoahen,aprofessorofbioengineeringandofelectricalengineeringatStanfordUniversity,hasenvisionedanewgenerationofcomputerstobebrainlike,orneuromorphic,machinesthatarevastlymoreefficientthantheconventionaldigitalcomputers.Asconventionalcomputerchipsarenotuptothechallengesposedbynext-generationautonomousdronesandmedicalimplants,"wehavereachedthepointwhereweneedtodosomethingdifferent",saysBoahen,alsoamemberofStanfordBio-XandtheStanfordNeurosciencesInstitute."Ourlab"sthreedecadesofexperiencehasputusinapositionwherewecandosomethingdifferent,somethingcompetitive."Moore"slaw,anobservationmadebyIntelCorpco-founderGordonMoorein1965,hasheldupprettywellforfivedecades:Roughlyeverytwoyears,thenumberoftransistorsonecouldfitonachipdoubled,allwhilecostssteadilydeclined.However,transistorsandotherelectroniccomponentsaresosmalltheyarebeginningtobumpupagainstfundamentalphysicallimitsontheirsize.Andthereareneedsforcomputingtobeeverfaster,cheaperandmoreefficient.InthelatestissueofComputinginScienceandEngineering,Boahensaysthatthefutureisnow.Hesaysthatwhileothershavebuiltbrain-inspiredcomputers,hewasquotedinanewsreleasesayingthatheandhiscollaboratorshavedevelopedafive-pointprospectusforhowtobuildneuromorphiccomputersthatdirectlymimicinsiliconwhatthebraindoesinfleshandblood.Thefirsttwopointsoftheprospectusconcernneuronsthemselves,whichunlikecomputersoperateinamixofdigitalandanalogmodes.Intheirdigitalmode,neuronssenddiscrete,all-or-nothingsignalsintheformofelectricalspikes,akintotheonesandzeroesofdigitalcomputers.Buttheyprocessincomingsignalsbyaddingthemallupandfiringonlyonceathresholdisreached-moreakintoadialthanaswitch.ThatobservationledBoahentotryusingtransistorsinamixeddigital-analogmode.Doingso,itturnsout,makeschipsbothmoreenergyefficientandmorerobustwhenthecomponentsdofail,asabout4percentofthesmallesttransistorsareexpectedtodo.Fromthere,Boahenbuildsonneurons"hierarchicalorganization,distributedcomputationandfeedbackloopstocreateavisionofanevenmoreenergyefficient,powerfulandrobustneuromorphiccomputer.Overthelast30years,Boahen"slabhasimplementedmostofitsideasinphysicaldevices,includingNeurogrid,oneofthefirsttrulyneuromorphiccomputers.But,inanothertwoorthreeyears,Boahensays,heexpectshisteamwillhavedesignedandbuiltcomputersimplementingalloftheprospectus"fivepoints."It"scomplementary,"Boahensays,addingthat"it"snotgoingtoreplacecurrentcomputers".Butasmostpersonalcomputersoperatenowherenearthelimitsofconventionalchips,neuromorphiccomputerswouldbemostusefulinembeddedsystemsthathaveextremelytightenergyrequirements,suchasverylow-powerneuralimplantsoron-boardcomputersinautonomousdrones.”  陈宇莹表示,一个停车桩的成本在1000元左右,电子围栏只要不到100元,“电子围栏成本非常低,因为不用拉电,是一个火柴盒大小的发射器,就埋在指示牌里。2001年12月,国宾护卫队被武警总部授予基层建设标兵中队荣誉称号。

同时,选取中极、关元、气海等穴位进行艾灸,也是治疗宫寒的好方法。北京市发改委提醒,市民若发现房产企业有价格违法行为,可拨打12358进行举报。2008年,闫文玲的公公婆婆开始了候鸟老人的生活,两年后的春节,闫文玲和老伴儿,带着在北京工作的女儿,一大家子人,在三亚过了个年。

必须要让我们很多中小企业引以为戒。2017-03-1615:23:43其实这个系列气象的主题让师太说了以后我们觉得一下子变的更加全面了,不仅仅是我们专业人士我们有高端全方位的设备来“观云识天”,每个人都可以参与,而且他跟你熟悉亲近了之后,我觉得天气预报的准确率分成两部分,一部分是因为你们的强大支撑的天气预报客观准与不准的准确率,另外一方面是你们这些人跟大家经常去互动,感情亲近了以后,因为喜欢你因为相信你,因为相信你不会骗我们,所以说内心深处不抵触所产生天气预报主观的准确率,他不会冤枉你,错了就是错了,对了就是对了,这一点我们每个人所做的看似都是局部,在气象这个行业当中都是局部,但是堆积起来搭建起来才是真正的“观云识天”。历史上确实政府购买奥迪作为公务用车比较多,但这是历史了。

13条临时扫墓专线不认一卡通北京市清明节群众祭扫服务工作临时指挥部副总指挥、市民政局副巡视员李全喜介绍,今年清明期间,预计八宝山地区祭扫人数将超过40万人次,昌平区祭扫人数将超过90万人次,这两个地区是祭扫重点区域。现存殿宇建于清末,规模宏伟,雕刻精细,并有不少珍贵文物和古树。  而这一涉及PDI标准的案件在审理中也出现了转折。

运输部长艾哈迈德·阿尔斯兰表示,美国的决定是错误的,该国正在与华盛顿进行沟通,以停止或弱化该禁令,以免将伊斯坦布尔和其他地方混为一谈。  交易员表示,随着季末临近,为防万一,机构对长期限资金融入的需求不断增加,但是融资的很少,都在努力囤钱,这种普遍做法也会加剧市场资金供求紧张,导致流动性紧张的自我实现、提前实现。新政对调整土地供应结构,创新土地供应条件及加强房地产市场整治方面都有新的要求。

“我就这样认定了柏老,我结婚后生小孩前也是找他调理的身体,平时眼睛一有不舒服都来找他看。KUALALUMPUR—China"se-commercegiantAlibabaonWednesdayannouncedaplantosetupane-commercehubinMalaysiaencompassinglogistics,cloud-computingande-financialservice.Thee-commercehubwillbepartofthecollaborationbetweenAlibabaandtheMalaysiangovernmentinthedevelopmentofaDigitalFreeTradeZone(DFTZ)inMalaysiainlinewiththeElectronicWorldTradePlatform(eWTP)promotedbyJackMa,Alibaba"sexecutivechairman.InlaunchingtheDFTZwithMalaysianPrimeMinisterNajibRazak,Masaidthefirstoversease-hubwouldbeaimedatempoweringsmallandmediumenterprises(SMEs)aswellastheyoungergeneration.AmongthecooperationannouncedonWednesday,Alibaba"slogisticplatformCainiaoanditse-commercewebsiteLazadawillleadotherAlibaba"ssubsidiariesandaffiliatestodevelopmentofaregionale-commerceandlogisticshubneartheKualaLumpurInternationalAirport.AlibabaCloud,itscloudcomputingarm,willbuildacloudplatforminMalaysiatofosterthelocalSMEs,whileAntFinancialinkedanagreementwithMalaysia"sleadingbanksCIMBandMaybanktoexplorecollaborationopportunitiesine-paymentandfinancingservicesinMalaysia.在沙特国王萨勒曼和以色列总理内塔尼亚胡访华期间,双方就深化各领域务实合作达成了重要共识,取得了丰硕成果。

2月初上市的新款欧尚在动力方面没有改动,只在外观和配置上有所变化。美方的说法是,该导弹在发射的数秒内爆炸。”韩国检方对朴槿惠提出13项涉嫌犯罪指控,其中受贿、滥用职权成为调查核心。

常常表现为粉红色或苍白的风团和剧烈的瘙痒。Athousand-year-oldpagodainCentralChina"sHenanprovincehasstartedonitslargest-scalerenovationsince1949,saidlocalofficialsonTuesday.Thenine-storyoctangularpagoda,intheWuhuaTempleofYiyangcountyinLuoyangcity,stands37.2meterstallandfeaturescarvingsofbuddhasandgiants.AccordingtotheYiyangcountyannals,thepagodawasbuiltintheSongDynasty(960-1279),butsomeoftheconstructionmaterialsdatefromtheTangDynasty(618-907).Overtime,theotherpartsofthetemplecomplexweredestroyed,leavingjusttheWuhuaTemple.Thepagodahasalsotiltedoverthecenturies,leadinglocalstojokinglycallit"Luoyang"sTowerofPisa"."Duetothelackofrepair,itwasleaning,andsomeofthestonesweremissingorweatheredaway,"saidHuoXiaofeng,headoftheculturalrelicsmanagementofficeofYiyang."Theroofeavesespeciallywereseriouslydamaged."Therenovationisexpectedtobecompletedattheendoftheyear.台盟重庆市委会主委李钺锋非常重视台湾青年创业基地的作用。

至此,苹果在中国计划建立的研发中心数量已经有4个,其它两个分别位于北京和深圳。  被送往托养中心不到两个月后,雷文锋死亡。  国资平台主动清盘  日前,拥有国资背景的重庆惠民金融服务有限责任公司宣布,4月1日起关闭其旗下联保通网站功能。

这也让三四线房市成为投资的热点。外交部发言人华春莹:半岛核问题由来已久、错综复杂,其症结在于朝鲜与美韩之间的矛盾,以及彼此间根深蒂固的敌对和互不信任。然而,随着公元前18世纪中叶印度河流域文明的突然衰亡,南路的海上贸易告以中止。

  会议认为,全球经济继续复苏,但增速仍不尽理想,下行风险犹存。据中新网(微信公众号:cns2012)记者不完全统计,截至22日下午,共有包括北京大学、清华大学在内的60余所高校公布了今年的自主招生简章。此外还提出了高品质产品的消费,目的是什么?就是随着人民生活水平提高以后,消费的多层次性、多样化、个性化,个人定制越来越普及,要求高品质了。

  凡此种种,的确显示澳有向中国靠拢的感觉。朴槿惠成为继卢泰愚、全斗焕、卢武铉之后,韩国历史上第四名受到检方传唤的前总统。”霸王条款随处可见在韩国留学的小孟,去年通过某旅游网站购买了一张韩国首尔飞山东威海的机票,到达机场后发现飞机晚点。

同样的悲剧频繁上演,血的教训犹在眼前,类似一幕却又上演,不得不让人为后来者捏把汗。我们现在做的地面自动观测的设备已经比较成熟了,那现在我们目前正在准备在业务上降雪大规模的建设,这些设备已经在我们的试验基地运行了三年多了,我们已经在做了对比试验,做业务化的一些准备。投资者据此操作,风险自担。

目前,议会大厦暂时关闭。ShandongpromotesculturalandtourismproductsinJapan(chinadaily.com.cn)Updated:2017-03-17The2017ShandongProvinceCulturalandTourismProductsExposition,jointlyhostedbytheShandongProvincialDepartmentofCommerceandShandongTourismDevelopmentCommittee,openedonMarch7inTokyo,Japan.Displayingtheprovince"sprofoundculturaldepositsandabundanttourismresources,thetwo-dayexpowasheldtopromotecommunicationandcooperationbetweenShandongandJapaninthefieldsoftourismandculture.Some100enterprisesandrelateddepartmentstookpartintheExpo,showcasingproductswithdistinctiveShandongfeaturessuchastraditionalhandicrafts,paintings,calligraphy,books,kites,paper-cuts,claysculpturesandwoodcarvings.AdocumentaryphotographyexhibitionontherepresentativetouristdestinationsofShandongalsotookplaceduringtheexpo.Shandonghasdeveloped10touristdestinationbrandsattractingpeopleacrosstheglobe--OrientalHolyLand,FairylandCoast,MountTaiinPeace,CapitalofAncientQiState,CityofSpringsundertheHeaven,TheGrandCanalBathedinConfucianism,HometownofWaterMargin,YellowRiverEstuary,AffectionateYimengandChinaDinosaurCity.Over200distinguishedguestsfromChinaandJapanattendedtheopeningceremony,duringwhichtheShandong-JapanEconomicandCulturalOrganizationUnionwasofficiallyestablished.AccordingtotheShandongProvincialDepartmentofCommerce,ShandongprovinceandJapanenjoyalonghistoryandgeographicaladvantagesincommercialandculturalcommunications.TheexpohelpedtopromoteShandongcultureandtourismaswellbetterbilateralunderstanding.TheculturalproductsshowcasedattheExpo,includingremarkablytruetolifetraditionalhandicraftsfromWeihai,QufuandJiaodongPeninsula,drewlargenumbersofJapanese.Theexpoalsofeaturedon-the-spotperformancesbyfolkartists.十多年不间断的理论研究与总结,再加上临床实践,张师傅逐渐建立起了一套完整的理论体系,“沙袋疗法”也由过去的单一疗法发展为现在的弹打法、滚压法、敲击法、中药熏蒸法、中药磁疗法、速效减肥、美容等18种系列中医治疗方法,并有了专业的培训教材。

华春莹说,对于安理会已经通过的相关涉朝决议,中方都是全面、严格、认真地执行。“十三五”时期是全面建成小康社会的决胜阶段,也是文物事业改革发展的关键时期。亚马逊在印度市场所下的决心极大,早在亚马逊进入印度市场第一年,亚马逊CEO贝索斯即拍板在印度追加20亿美元的投资,后续亚马逊承诺对于印度市场的投入增至50亿美元。

在中国为主的国家的推动下,国际电联已经将交互式娱乐等数字文化标准纳入未来的标准规划中。具体来说,我们将从以下三个方面进一步深化对《意见》精神的贯彻落实:一是更加强化问题意识。  在发布会的互动环节,环球时报-环球网军事记者问及:随着现代高科技武器的发展,尤其是远程打击武器的发展还有空中力量的发展,传统意义上的地理概念上的战略缓冲作用还有多大?  对此,徐焰少将表示,我们讲使世界变小了,既然世界变小了,过去缓冲区、地理障碍很多东西确实现在作用大大减少了,但是其实缓冲区也还存在,为什么军队停战叫非军事区,就是双方拿了武器的人不要碰在一块,碰在一块往往容易出事。

其中,门诊救助比例从70%调整到80%,全年救助封顶线从4000元调整到6000元(享受城镇职工基本医疗保险的救助对象除外)。台盟中央原秘书长张宁建议,对于在大陆学习的台生,在课程设置上,应增加国情教育方面的课程,包括近现代历史,尤其是两岸共同经历的史实,为台湾青年了解大陆、了解台胞在大陆的发展之路提供学习机会。但是从05年起他们便没有更新的艺术活动了。

过去的民法通则已经不能适应中国国情和市场经济形势及环境,更不能有效调节民事关系,对于民法典的现实需要越来越强烈。你们真的以为多伦多的房价是天价,完全难以负荷了?天外有天,在去年全球房价最贵的十大城市排行榜单上KnightFrank公布了2017年度财富报告,公布了100万加币能在世界各国能买到什么样的房子这份报告主要根据2016年世界20个黄金市场的豪华房子列出。  香港证券联合交易所对在港上市的企业看重的就是品牌,如果上市企业品牌频发食品安全问题,香港联交所的独立性、公正性和权威性就会遭到质疑。

2017-03-2010:26:10围绕中国手机动漫标准上升为国际标准,文化部也组织专家和企业开展了系列工作。第二,部分智库存在“穿靴戴帽、有名无实”的现象。  韩国高官受到的体制内监督很少,这使得朴槿惠被闺蜜崔顺实干政的怪现象能够长期持续,没有任何体制性力量予以纠正。

China"saidtotheeducationsectorinAfricaishelpingboostteachertraining,akeycomponentinskillingthepopulationtofasttrackdevelopment,aUNofficialhassaid.AnnThereseNdong-Jatta,directorofUnitedNationsEducational,ScientificandCulturalOrganizationRegionalOfficeforEasternAfrica,inarecentinterviewrecognizedChina"scontributiontoAfrica"seducationsectorovertheyears."WevaluetheinitiativeinteachertraininginUgandaandothercountriesinAfrica.Thiswillrevitalizetheteachingprofession,"shesays.ChinathroughUNESCOdonatedequipmenttothreeteacher-traininginstitutionsinUgandaonMarch3.FiguresfromtheChineseembassyhereshowthat137tutorsweretrainedand272piecesofinformationcommunicationandtechnologyandstudioequipmentweredonated.Ndong-Jattasaystutorswereskilledonhowtointegratetechnologywithtraditionalmethodsoftraining.ChinathroughUNESCOisfundingan$8millionprojectaimedatnarrowingtheeducationalqualitygaponthecontinent.Theproject,EnhancingTeacherEducationforBridgingtheEducationQualityGapinAfrica,aimstoaccelerateprogresstowardtheachievementofEducationforAllandtheSustainableDevelopmentGoal4,whichisqualityeducation.Thefour-yearprojectthatstartedin2012focusedonprovidingasufficientnumberofqualifiedteachersinAfricathroughtrainingprograms.EightAfricancountries-Coted"Ivoire,Ethiopia,Namibia,DemocraticRepublicoftheCongo,Congo,Liberia,Tanzania,andUganda-arebenefitingfromtheprogram.Ndong-Jattasaysbesidescooperationinprimaryeducation,ChinahasbeencooperatingwithAfricatoboosthighereducation.ChinahelpedsetuptheCapacityBuildingInstituteofTeacherEducationinEthiopia,andtheregionaldirectorsayssomeAfricancountriesalsohadstudentandteacherexchangeprogramswithChina.ShesaysaconferencehasbeenscheduledinDjiboutitodiscusshowtoboostfurthercooperationwithChinaintheareaofhighereducation.军事专家李杰指出,这艘服役26年的老航母,战技术性能已经无法满足当前信息化作战需求。”对此,作为柏老的忠实粉丝,蔡女士拿着手机不停刷号,她说:“我一定要抢个号,即使不是看病,来看看他也是好的。

这个“率先”体现了广东省在发展和创新方面的优势和特色。”退款被拒的情形屡见不鲜,在陕西省西安市工作的王先生就曾遇到过。  除了印度市场外,无论是腾讯还是阿里巴巴,近一年都在东南亚市场出手频频。

2009年9月4日,纽约华埠东百老汇地铁站发生一起严重事故,一名年仅21岁的中国籍男子被地铁撞倒,当场血流如注,奄奄一息。近日,佛山警方组织市、区两级公安机关对“梁家”地下钱庄案开展统一收网行动,捣毁地下钱庄窝点3个,抓获犯罪嫌疑人4名,现场查扣涉案资金人民币20余万元、港币50余万元,初步统计涉案金额达2亿余元。本月15日B1-B战略轰炸机飞抵韩国江原道宁越必胜射击场训练时,朝鲜就曾抗议称这是美帝在进行核炮弹投弹练习。

目前,合肥城市轨道交通有限公司已开始彻查。对参与各方来说,证监会的反馈更具有实践指导意义。  中美之间有诸多分歧,美国一些人不希望两国相互尊重,认为中国的核心利益美方不应予以尊重。

  上海海关关长李书玉表示,上海海关将进一步解放思想、勇于突破,主动调整现有格局,推进海关管理再造,建立安全高效便捷的海关综合监管新模式。全面实施“互联网+中华文明”三年行动计划。而最后一厘米意味着更多消费者能使用它。

中新社发张娅子摄设置了哪些申请门槛?——普遍强调学科特长清华有专业要求会背《三字经》各高校发布的自主招生简章中,对于招生对象申请条件予以明确规定。二是更加突出思想内涵。伦敦警方称,该袭击事件为恐怖袭击。

AjobseekerfillsupanapplicationformatajobfairinWenxiancounty,Henanprovince.[XuHongxing/ForChinaDaily]Astheeconomyhasenteredintoaphaseofre-balancingfromemergingtomoresustainableandinclusivegrowth,whichiscalledthenewnormal,theChineselabormarketmightalsobefacedwithnewchallenges.Totalpopulationoftheworkingagehasshownnegativegrowthsince2011,whichmeanssupplyanddemandtendstobemorebalanced.Thisnaturallyleadstolesscompetitionwithinthelabormarketingeneral,whilefocusneedstobeonsolvingproblemsofemploymentstructureandfrictionalunemployment.Frictionalunemploymentisanacademicdefinitionmeaningwhenworkersleavetheirjobstofindbetterones.It"susuallyavoluntaryexit,butcanalsooccurfromalayofforterminationwithcause.Thetime,effortandexpensesittakestheworkertofindanewjobiscalledfriction.Whilethisfrictionproblemmightbeamorecommondifficultyamongbothauthoritiesandemployees,withthedeepeningofreformandadjustmentofeconomicstructureprocessingcomprehensively,attentionisneededrelatingtothreeaspectsofemploymentcontradiction:First,withthestructuralreformcontinuing,dealingwithover-capacityindustriesandshuttingdownzombiecompaniesnaturallyleadstoproblemsofstructuralandfrictionalunemploymentforemployeesintheseareas.Forexample,someworkersmightbenotbeabletomeetnewrequirementswhentransferringtonewpositions,letaloneinsomeruralareas,whenpoorerfarmersmaystrugglewiththelackofnecessaryworkskillsorqualifications.Second,forsomepartsofthepopulation,theimprovementofemploymentqualityiscriticallyindemand.Thispopulationreferstoflexibleemployees,especiallymigrantworkers,whichaccountsfor36percentoftotalurbanemployment,butonly40percentofthemhavesignedlaborcontracts.Theycan’tfullyenjoypublicservicesandtheirparticipationinsocialsecurityprogramshavealowrate.Manyofthemhavestrongmotivationtocomebacktoruralareasassoonastheyareover40yearsold.Thisisadangeroussignofurbanization’sreverse,whichwouldfurtherworsenthelaborshortage.Third,newpatternsofemploymentsuchasinformalemploymentareincreasing,whichwouldchallengethetraditionallaborrightsprotectionsystemthatusuallysecurestheserightsbasedontheworkunit.Howtobroadenthebenefitcoverageforinformalemployeesisanissuethatbothersmanycountriesaroundtheworld.Measurestotacklethechallengescanalsobefocusedintothreeareas:First,policiesshouldbebetterformulatedtoachieveadelicatebalancebetweenlabormarketflexibilityandthelaborsecuritysystem.Workersneedtobeencouragedtolearnmoreprofessionalskills,andatthesametimeenterprisesshouldallocatesocialresourcesinthemostefficientway,whichcombinedcanimprovesocialproductivity.Forexample,reformofthehouseholdregistrationsystemshouldbemovedforward,reasonablemeasurescouldbetakentoguidethefarmpopulationflowintocities,whichwoulddefinitelyincreaselaborsupply.InstitutionalimprovementsliketheLaborLawamendmentarealsoneeded,tobetterprotectemployees’rights.Second,measuresinthelongrunshouldbefocusingonhumanresourceeducationandcultivation.Asmanyteenagersusuallytendtogiveupstudyingandenterthelabormarketatveryyoungage,theyaredestinedtostrugglecopingwithemploymentfluctuationinthefuture.Soacomprehensiveeducationalandtrainingsystemcoveringtheentiresocietyandallagerangesisvitallyindemand,especiallytoimproveworkers’innovationandemploymentskills.Third,ononehand,thestructuralreformneedstokeeppushingforward,whileontheotherhand,socialpoliciesneedtobeusedasaguaranteeforresidents’basicstandardofliving.Sothepublicemploymentservicesystemshouldbeimproved,inordertoreducethetimeitcoststheunemployedtofindanotherjob.Andatthesametime,trytobreakinequalityofthecurrentsocialsecuritypublicservicessystem,whicharedividedbyruralandurbanareas,industries,identityandsexuality.Inoneword,alltheresidentscouldbenefitfromthereform’sachievement.Confidencefromthepublicfortheauthoritytotackletheemploymentissueshouldbestrengthened;solidprogresshasbeengraduallyobtainedinrecentyears.In2016,100billionyuanofspecialfundstocompensateemployeesincuttingover-capacityindustrieswereallocatedfromthegovernment,andpoliciesaimedatmakingtheentrepreneurshipenvironmentmorelivelyhavealsoseenfruitfulachievements.WuZheyu’sre-writefromCaiFang’sopinionarticlepublishedonPeople’sDaily.业绩报告中指,增加每股派息,令集团股息总支付由64.89亿元,增至75.48亿元。  在人民大学重阳金融研究院承办的深化金融合作,共促金砖发展金砖国家智库研讨会上,季诺维也夫强调,五国合作早就超越了经济范畴。

”  原本长相甜美的王女士为何如今会面目全非呢这还要从她的一次整容说起。他没想到“顾客至上”也会出事。2017-03-1614:23:41谢谢曹主任,我们现在很多网友就是这样的,北京一旦出现晚霞或是蓝天白云大家就在朋友圈里晒,只要这样的天气一出现,大家的心情可好了。

  不过,联想移动对高层的调整,并未盲目之举。此次招聘会不仅解决了40余家会员企业用工荒的问题,还解决了800余名女大学生就业难的问题。以色列愿看到中国在中东事务中发挥更大作用。