叙利亚1婚礼现场遭自杀式爆炸袭击致数10人死亡

足彩

2018-04-24

资深朝鲜半岛问题专家徐宝康21日对《环球时报》记者表示,目前半岛对抗程度空前。组织300余家企业以开展招聘会的形式,提供2600个女性就业岗位,支持女大学生就业创业,并提供对接贴息贷款服务。“三变”改革的有益尝试,得到了中央和贵州省委省政府主要领导的批示肯定。

  经过3个月努力,专案组终于收集到了该公司的犯罪证据,并取得该公司从2015年6月至12月申报的每一批进口货物的留样样品。国际在线专稿:日前,特斯拉汽车公司总裁伊隆·马斯克(ElonMusk)关于“超级高铁”的梦想离现实又近了一步:据英国《每日邮报》3月21日报道,“超级铁路交通技术公司”(HTT,HyperloopTransportationTechnologies)表示,他们已经开始建造“超级高铁”的乘客舱,并预计将于明年年初完工。无法在职业足球方面进一步发展的小球员,双方也会通过合作的教育机构安排出路,实现从小学到高中的教育通道,从根本上解决球员和家长的后顾之忧。

果肉益肾气、健脾胃、壮腰膝、强筋骨,且活血、止血、消肿。2011年,姚某感觉自己小偷小摸来钱太慢,于是掌控其他聋哑人为自己盗窃。她觉得上大学时的态度是“干啥都行就是不想睡觉”,而工作两年后自己更加爱惜身体,“什么都不能阻挡我按时睡觉。

3月21日,洋河与1919召开战略合作发布会,并发布由1919专销的战略新品“金洋河”及“洋河头曲”。·总要求习近平指出,教育实践活动要着眼于自我净化、自我完善、自我革新、自我提高,以“照镜子、正衣冠、洗洗澡、治治病”为总要求。腾提度体育总裁苏玲在20日与成都传媒集团的签约会上谈到。

  三艘以上是形成初级作战能力基础保障  近年来,中国海军发展势头迅猛。此外,实施药品阳光采购。激活经典服务当代作者:中央文史研究馆馆长、“中华传统文化百部经典”主编袁行霈目前中国正处于文化发展的关键时期,中华文化向何处去,我们有没有文化自信,能不能在传统的基础上,在世界的大格局中,开辟自己独特的道路,是摆在我们面前的一个严峻问题。

部属萨德的事情,中国外交部已经说得很清楚了,不知道韩国媒体为什么还是这么一根筋。也就是说在台风还没有编号的时候已经进入了卫星的视野里面,从开始形成一个气旋,我们就开始跟踪观测,而且观测的频率也越来越高。”朱晓进说。

最重要的是,将文具做成首饰十分的诙谐有趣,甚至能让人回忆起读书的日子。2017-03-2010:22:21战略性新兴产业把数字创意产业纳入进来以后,有的专家解读,国家战新产业既有硬件方面的建设,更增加了软实力建设的支持。”让中国声音、中国智慧走入国外民众内心,“智库外交”优势独具。

中医有“心主神明”、“心主血脉”之说,因此,静心的关键在于安神。全国人大重视发展与以色列议会的友好关系,愿共同努力,为推动中以关系全面深入发展做出积极贡献。只能祈祷夏天赶紧来了。

中新网北京3月23日电(记者张尼)《北京市医药分开综合改革实施方案》22日发布。10月17日,此次定增募资认购完成。  蔡英文当选后宣布支持国舰国造计划。

2017-03-1614:41:57您这么一介绍,因为我们光是一个卫星一种卫星既有静止也有极轨,所以说每一个天气系统都很难逃脱它的跟踪。”他说。身兼电影导演和作家两种身份,JJ艾布拉姆斯希望拍摄可爱且受人喜欢的电影,这样就能接触到全世界更多观众。

Sleepiscrucialforbabies,andtomarkWorldSleepDay,whichfellonMarch21,diaperbrandPampersispromotingawarenessonsleeptrainingfortheyoungones.AccordingtoaWhitePaperontheSleepQualityofChineseBabiesreleasedinDecemberlessthan6percentofparentsknowwhytheirbabiesdonotenjoyagoodnight"ssleep."Manyparentsdonothaveanunderstandingoftheimportanceofteachingababytosleep,"saysWangRonghui,aninfantdevelopmentexpert,whoisalsoababysleepconsultant."RecentresearchinCanadashowsthatpropereducationonbabysleeptrainingcouldresolve40percentofbabies"sleepproblems,"saysWang.Theconsultantalsosuggeststhatparentspayattentiontotheirbaby"ssignalstoguidethebabytosleep,suchasthebeginningofatranceandthegradualquietnessofthebody."Cradlesongsareimportantandeffectiveincomfortingandcalmingbabiesandguidingthemtofallasleep,"shesays.AccordingtotheWhitePaper,babiesagedbetween6and12monthsinparticularhaverestlessnightsandwakeupmultiplestimes."Andwetandleakydiaperscandisrupttheirsleep,"saysWang."So,overnightdiapersarebetterbecausetheyarethickerandmoreabsorbentthanregularones."Related:正在派件的顺丰快递小哥告诉记者,“经常我一个人一趟就派三四十个件。就比如说这条耳机造型的长项链,不但包括听筒的部分,就连线控都栩栩如生,如果我不说的话,你是不是就真的认为它是一副耳机了?NadineGhosn耳机造型长项链,12800美元。

数字创意产业的国际标准也是非常重要的一个方面。在伊朗高原,苏萨控制了商路,阿富汗的青金石不再运往两河流域北部,而是运往南部诸城邦。  总部设在伦敦的航空战略研究所首席分析师艾哈迈德对媒体表示,此举可能导致乘客取消赴美行程,或改道欧洲进行中转。

CHANGSHA-Theworld"slongestandhighestglassbridge,inZhangjiajie,CentralChina"sHunanprovince,isscrappingtheentrancefeeforIsraelitouristsfortherestofthisyear.Themoveistocelebratethe25thanniversaryofdiplomatictiesbetweenChinaandIsraelandtopaytributetotheskywalk"sIsraelidesignerHaimDotan.IsraelicitizenscarryingtheirpassportsareentitledtoafreetripacrosstheglassbridgelocatedinZhangjiajieGrandCanyon,aswellastootherpartsofthearea,fromMarch21toDec31.Dotan,whoalsodesignedtheIsraeliPavillionattheWorldExpoinShanghaiin2010,saidhisworkinZhangjiajiewasinspiredbyChinesephilosopherLao-tzu.OpenedinlateAugust,the430-meterlong,six-meterwidebridgeispavedwith99panesofthree-layertransparentglassandhangsbetweentwosteepcliffs300metersabovetheground.Thebridgeset10worldrecordsforitsdesignandconstruction.人造玻璃虽然在品质与色泽等方面不如天然青金石,但成本小、价格低,可以满足中下层人的需求。  ofo对记者表示,将利用大数据对城市需求量进行预测,明确划分共享单车停放区,同时组建线下运维团队进行网格化管理,保障共享单车在规范区域停放和用户规范的使用。

”这个年龄段的女人在职场、家庭中常扮演着决策者的角色。CHANGSHA-Theworld"slongestandhighestglassbridge,inZhangjiajie,CentralChina"sHunanprovince,isscrappingtheentrancefeeforIsraelitouristsfortherestofthisyear.Themoveistocelebratethe25thanniversaryofdiplomatictiesbetweenChinaandIsraelandtopaytributetotheskywalk"sIsraelidesignerHaimDotan.IsraelicitizenscarryingtheirpassportsareentitledtoafreetripacrosstheglassbridgelocatedinZhangjiajieGrandCanyon,aswellastootherpartsofthearea,fromMarch21toDec31.Dotan,whoalsodesignedtheIsraeliPavillionattheWorldExpoinShanghaiin2010,saidhisworkinZhangjiajiewasinspiredbyChinesephilosopherLao-tzu.OpenedinlateAugust,the430-meterlong,six-meterwidebridgeispavedwith99panesofthree-layertransparentglassandhangsbetweentwosteepcliffs300metersabovetheground.Thebridgeset10worldrecordsforitsdesignandconstruction.他称,俄罗斯海军及苏联海军都是无人系统及武器的创新性制造者,包括世界上最先进的鱼雷。

  在上海科创中心建设方面,上海将以全球视野、国际标准提升科学中心集中度和显示度,在基础科技领域作出大的创新、在关键核心技术领域取得大的突破。  “联通近几年的移动业务表现相当差。  一位曾经从事过海军装备研发工作的消息人士称,中国第二艘国产航母完全没有配备电磁弹射器的可能性。

在这个过程当中,文化部会同工信部特别是技术团队、北京邮电大学等组织力量,我们顺应这个趋势,从标准层面来推动和引领漫发展,在制订发布中国手机(移动终端)动漫行业标准的基础上,围绕中国手机(移动终端)动漫标准上升为国际标准开展了一系列工作。年轻气盛的俞望辰有些灰心,他正在筹备公司天猫店铺的开业,却“没什么东西可以卖”。保健专家提醒说,此时节,天气虽然转暖,但昼夜温差较大,乍暖还寒,忽冷忽热,公众要谨慎添减衣物,在饮食调养上更要注意膳食平衡。

Anexhibitionthemedonwomen"slivesduringtheHan(206BC-220AD)andTang(618-907)dynastiesisongoingattheTianjinMuseum,whichisshowingnearly100piecesofexquisiteculturalrelics.Ancientpotteryfigurinesrelatingtofemales,aswellasgold,silverandjadeitemsandbronzemirrorsareonexhibit.Theexhibitionfeaturesthefirstfemale-themedshowintheTianjinMuseumanditispresentedincollaborationwiththeXi"anMuseum.Itrevealsthefashionablelifeofwomenintheancientcapital,Chang"an,throughclothing,makeup,scenesoffeasting,musicanddance.TheexhibitionwillrunthroughMay4.”洪文说。中国网的10种语言、11个文版覆盖全世界200多个国家与地区,以图片、文字、音视频等多种介质描画中国绿色发展新形象,展示中国生态建设的新步伐。

Guangzhouhas107secondaryvocationalschools,morethan10collegesforadultsandover60universities,includingSunYat-SenUniversity,JinanUniversity,SouthChinaAgriculturalUniversity,theGuangdongUniversityofTechnology,GuangzhouUniversityandtheGuangdongUniversityofForeignStudies.Thecityhascooperatedwithmorethan200researchinstitutesfromabout20countriesandregions.Itishometotwothirdsofhighereducationalinstitutions,97percentofthelaboratoriesforstatekeydisciplinesandallthestatekeylaboratoriesinGuangdongprovince.About2.88millionpeoplehaveaneducationalbackgroundabovecollegelevel.Thereare1.409millionprofessionalandtechnicalpersonneland2.122millionskilledpeople.SixNoblePrizewinners,77academiciansoftheChineseAcademyofSciencesandtheChineseAcademyofEngineering,129entriesofthe"1000TalentPlan"(aChinesegovernment-initiatedglobaltalentprogram),139,500peoplewithseniorprofessionalandtechnicalqualificationsand642,000highlyskilledtalentsworkedinGuangzhouin2015.我提倡沉潜下来,认真地读点书,真正读进去、用起来。为贯彻落实中央对生态文明建设的指示精神,探索“绿色发展、循环发展、低碳发展”的实现途径,研究推进生态文明建设的有效模式,中国互联网新闻中心和中国环境科学学会紧密携手,推出了一年一度的绿色发展与生态建设新标杆盛典。

新华社北京3月19日电(记者李忠发)国家主席习近平19日在人民大会堂会见美国国务卿蒂勒森。但从这些公司近期的振幅或涨幅来看,与以往完全不同,很有可能是内地游资开始瞄向港股的一个信号”,有不愿具名的分析人士指出,“尤其是港股没有涨跌停限制,实行T+0交易,更适于游资的快进快出”。还有一个帐篷播放着一些录像,有亲人哭泣,也有孩子们玩耍的身影,走过的人无不神情落寞,让人悲叹世事无情。

公开资料显示,周皖柱是安徽舒城人,曾任原南京军区政治部纪检部部长,第1集团军政治部主任、副政委等职务,2014年调任第12集团军政委,2011年晋升少将军衔。  知名营销经理人洪仕斌告诉记者:“联想已经错过了抢占运营商渠道的最佳时间。常常表现为粉红色或苍白的风团和剧烈的瘙痒。

至截稿,记者未获得摩拜回应。Japan"srulingandoppositionpartieshavedecidedtosummonYasunoriKagoike,headoftheOsaka-basededucationinstitutionMoritomoGakuen,toDiet,orJapan"sparliamenttoanswerquestionsonMarch23.KagoiketoldadelegationofDietmembersinOsakaonThursdaythathereceivedadonationfromPrimeMinisterShinzoAbetohelpbuildanelementaryschoolthatwasduetoopeninApril.Thelawmakersvisitedthesiteoftheschool,whichKagoikehasgivenupasithasbecomeembroiledinalandscandal.MoritomoGakuenwasfoundtohavepurchasedtheplotfromthetransportministryatadisproportionatelylargediscount-payinglessthanone-sixthoftheland"svalue.Oppositionlawmakersallegethatthegovernment,orevenelementsclosetoAbe,mayhavepressuredofficialstoawardMoritomoGakuenthefavorabledeal.Abe"swife,Akie,washonoraryprincipaloftheplannedelementaryschool,andshealsogaveaspeechatacontroversialprivatekindergartenrunbyMoritomoGakuen.ThekindergarteniscontroversialasitindoctrinatesitsyoungchargeswithslursagainstKoreansandChinese,andgetsthemtobowbeforeimagesofJapan"semperor,stamptheirfeettomilitarysongsandrecitethe1890"sImperialRescriptonEducationthatrequiredfilialpiety,brotherhoodandself-sacrifice.AbehastriedtodistancehimselffromKagoike.ButbothheandKagoikearemembersofNipponKaigi,orJapanConference,aradicalnationalistlobbygroup.Abeservesasits"specialadviser",andKagoikeheadsitsOsakabranch.NipponKaigi,isasmallgroup,withabout38,000fee-payingmembers.ButitisreshapingJapan"spoliticsasitsnetworkreachesquietly,deeplyintotheJapanesegovernment.Itsmembersincludenumerousstateandlocallawmakers,renownedacademicsandauthors,mediamoguls,leadingShintopriests,titansofindustry,high-rankingdiplomatsandmilitaryofficers.ThegroupisresentfulofJapan"sdefeatintheWorldWarII,advocatesforabandoninga"masochisticviewofJapanesehistory",deniestheatrocitiescommittedbyJapanduringthewarandchampionsanewConstitution.Ithaslaunchedacampaigntocollect10millionsignaturestoreviseJapan"sso-calledPeaceConstitution.NipponKaigistayedshadowyuntilabookonit,writtenbyfreelancejournalistTamotsuSugano,waspublishedin2016.Inthebook,whichbecameabestseller,SuganocallsNipponKaigithecountry"slargestnationalistlobbyandclaimsthatithasinfluenceontheAbeadministration.Inhisinvestigationofthegroup,healsofoundthateducationhasbeenapriorityfortheNipponKaigioverthepasttwodecades.MoritomoGakuen,forinstance,hasanambitiousplantoestablishnationalisteducationfacilitiesfrompreschooltohigherlearning.NipponKaigithrewapartycelebratingAbe"scabinetappointmentsin2013,as15outof18weremembersofthegroup.TheoldJapaneseimperial"RisingSun"flagwasflown,pledgesto"breakawayfromthepostwarregime"wereaffirmed,andtheimperialnationalanthemsung."Go,goPrimeMinisterAbe!We"rehappyyoupassedsecuritylegislationattheDiet!"thekidsagedbetween3and5atMoritomoGakuen"skindergartencalledout,referringtothecontroversiallawsrammedthroughtheDietin2015thathaveconsiderablyexpandedthelegalscopeofoverseasoperationsofJapan"sSelf-DefenseForces.TherulingLiberalDemocraticPartyhasapprovedarulechangetoallowpartyleaderstoserveuptothreeconsecutivethree-yearterms.ThemoveallowsAbetopotentiallystretchhistenurethrough2021.Ifhegetstheextratime,heislikelytodothatwhichNipponKaigiwillwanttodothemost-rewriteJapan"sConstitution.TheauthorisChinaDailyTokyobureauchief.caihong@chinadaily.com.cn首先从特色发展道路来看,中国的文化产业与数字技术的结合在世界范围内都是很有特色的。

定期会晤:2013年4月9日,作为两国发展关系的重要时刻,李克强在北京与时任澳大利亚总理吉拉德举行会谈,正式启动两国总理年度定期会晤机制。四是加强传统民居保护,挖掘整理传统建筑文化。反对首尔市长的老人在造势  而市政厅广场一角的情景让人觉得有点伤感。

专家开方:彭玉清介绍,宫寒的人多因寒邪侵体,血性凝滞所致,而暖宫效果最好的非艾叶莫属。前天中午,有网友爆料称,11月27日,东航MU2469航班从上海虹桥去武汉,摆渡车却错将一车人送上了去往厦门的航班。这跟去年4月1日发布的“廊九条”楼市限购政策相比,此次实行住房限购的区域在三河市、大厂回族自治县、香河县和固安县等环京四县的基础上扩大范围,加入房价上涨幅度较快的廊坊市主城区和永清县。

特朗普上台后,与传统盟友不断发生争吵。3月22日上午,中铁一局办公室工作人员对澎湃新闻称:我们已将奥凯电缆公司列为不合格名录,所有涉及到的全部更换。2001年,该家族就因为经营地下钱庄被公安机关查处过。

  朴槿惠曾在任职总统前半期对发展中韩关系做出不小贡献,正是在她的任上,中韩战略合作伙伴关系达到了巅峰水平。ChinamustperfectitssystemsofoperatingState-ownedbusinessesabroadtobetterevaluatetheirperformanceandholdmisbehavingstaffersaccountable,PremierLiKeqiangsaidonTuesday.Thegoalisto"ensurethesafeoperationofState-ownedassetsandthattheirvalueismaintainedorincreased",LisaidinBeijingattheStateCouncil"sannualmeetingonmaintainingcleangovernment.TheStateCouncil,China"sCabinet,holdsthemeetingeachyeartoreviewthegovernment"sworkinfightingcorruptionandothermisconductoverthepreviousyearandtooutlineprioritytasksthatwillboostself-discipline.Atthemeeting,LinotedthatasState-ownedenterprisesandcapitalgoglobal,"supervisionandmanagementmustcatchupinatimelymanner".China"scentrallyadministeredSOEsinclude9,112businessentitiesoperatinginabout185countriesandregions.TheSOEshavetotaloverseasassetsofmorethan5trillionyuan($725.6billion)and346,000employeesoperatingoverseas,XiaoYaqing,headoftheStateCouncil"sState-OwnedAssetsSupervisionandAdministrationCommission,saidearlierthismonth.WhiledeliveringtheGovernmentWorkReportattheannualplenarysessionofNationalPeople"sCongressonMarch5,Liunderlinedtheneed"topreventthelossofStateassets"andtoenableSOEstobecomeleanerandhealthierandincreasetheircorecompetitiveness.AtTuesday"smeeting,thepremierwarnedthat"theState-ownedassetsarethecommonwealthofallofChina"speople"andmustneverbecometheeasilygained,ill-gottenpossessionsofanysingleperson.LiWei,aresearcherattheNationalAcademyofDevelopmentandStrategyatRenminUniversityofChina,saidthatsomeState-ownedcompanieshaveunderestimatedtherisksofoverseasinvestment,leadingtofinancialloss.SomecasesinvolvinginvestmentoverseashaveunderscoredtheimportanceofsteppingupsupervisionoftheoperationsofChina"sState-ownedenterprises,hesaid.AlsoonTuesday,PremierLisaidthegovernmentwillspeeduptheprocessthisyearofstipulatinginlistsallofthepowersandresponsibilitiesoftheStateCouncil"sdepartments.Thesemanagementlistswillprovideageneralinventorytoregulatethegovernment"spowersandresponsibilities,Lisaid.Thegovernment"seffortsinreducingpowerswillbemaximized,Lisaid.AsChinahassetthegoalofeliminatingpovertywithinthecountryby2020,boostingtheefficiencyandthesupervisionofpovertyalleviationeffortswasraisedatTuesday"smeeting.Lisaidthefocusshouldbeondirectingthealleviationeffortsandresourcestowheretheywilldothemostgoodratherthantothosenotinactualneed.Particularly,whenofferingsubsistenceallowances,thereshouldbenocasesofprovidingfavors,courtingconnections,orinfluence-peddling,Lisaid.客户有钱,只认明星砸钱,1000万不来,就给2000万。

中美相互尊重作为基本原则事实上越来越绕不开,双方需要探讨和磨合的恐怕是如何实现相互尊重。《目录》是具体落实《规划》的重要执行文件,体现了当前数字创意产业的重点引导和支持方向,也是相关优惠政策和支持措施落实的重要依据。据犯罪嫌疑人交代,这些“洋垃圾”因为太脏了,在美国都找不到愿意出租的集装箱。

百名“刘三姐”民歌湖与千人汇歌“壮族三月三·八桂嘉年华”2017年南宁市民歌湖活动,共分为三大项10小项活动,包括民族文化汇演区、文化体验活动区、“相约民歌湖畔·共眷天下民歌”南宁民歌湖周周演大型民歌专场演出三大项活动,活动时间为3月30日9:00—22:00,力争将民歌湖打造成一场热闹喜庆的大歌圩。2017-03-2010:34:32感谢魏凯主任的解答!他也是国际电联标准化专家,所以,回答的非常专业。  此次会议是德国担任G20主席国后举办的首次财长和央行行长会。

Executivesfromcentralandlocalindustryandcommercefederations,andprivatecompaniesattendtheconferenceinBeijingonMarch21,2017.[Photoprovidedtochinadaily.com.cn]Thevalueofnewly-signedcontractshasreached$126billion,withChineseprivatecompaniesplayingamoreimportantroleininvestmenttosupporttheBeltandRoadinitiative,accordingtoaconferenceheldbytheChinaFederationofIndustryandCommerceinBeijingonMarch21.That"sontopofthe$1.45millionalreadypumpedintothe53countriesandregionsalongtheBeltandRoadbyChinain2016.PrivatecompaniesfromdifferentfieldsaroundthecountrysharedtheirinvestmentexperiencesinBeltandRoadcountriesattheconference.Conductingin-depthduediligence,especiallywiththeassistanceofprofessionalthirdpartyinstitutions,iscriticalinpreventinginvestmentrisks,saidNanCunhui,chairmanofChintGroup,acompanyfocusingonindustrialelectricalequipmentproductionandcleanenergyfields.Localizingtheoperation,includingpurchasinglocalplants,recruitinglocalemployeesandcooperatingwithenterprisesindestinationcountriesarealleffectivemeasurestoavoidtradebarriersandincreasecompetencies.Resourceintegrationcanalsopushforwardsupply-sidereformathome,addedthechairman.MostBeltandRoadcountrieshaveunder-developedagricultureproduction,andtheynotonlydemandgoodsandtechnologiesfromChina,butalsointegratedsolutions.AsLinYinsun,chairmanofagriculturalcompanyZhengbangGroupsaid,thecompanypromotedan"enterprise+farmer"modeandtransferredlocalfamilyworkshopstofactoriesinAngola,Egypt,andBangladesh,andearnedsupportfromthetribechieftotheAgricultureSecretaryinthesecountries.IndustryandcommercefederationsnationwidealsoplayakeypartinassistingsmoothandeffectiveexplorationofprivatecompaniesinBeltandRoadcountries.LeiYuanjiang,chairmanoftheIndustryandCommerceFederationinEastChina"sJiangxiprovince,saidtheycompiledBeltandRoaddocumentsforitsmemberenterprises,andestablishedaBeltandRoadservicecenterinOctober2015.TheFederationformedanallianceinDecember2016tomanageenterprisebehaviorandpreventviciouscompetitioninoverseascountries,whichhasattracted126membercompaniestodate.TheFederationalsoestablishedconnectionswith54federationsinBeltandRoadcountriesandregionsandsignedcooperationagreementswith22ofthem.AccordingtoZhengYuewen,chairmanoftheChinaInternationalChamberofCommerceforthePrivateSector,theChamberhascompletedsigningMOUswithfederationsinBeltandRoadcountries,andplanstobringtogetherleadersofchambersinBeltandRoadcountriesforanannualsummitstartingthisyear.WangQinmin,chairmanoftheChinaFederationofIndustryandCommercealsopointedoutpitfallsforprivatecompaniesinvesting,includingweaklegalconsciousnessandriskawareness,anddisorderlyinvestment.TheFederationplanstoestablisharegistrationmechanismforBeltandRoadcountryinvestmentandputitonlineinJunethisyear.切实加大文物保护力度,延续中华文脉。  此前的信息显示,这一Windows10特别版的开发由微软和中国电子科技集团公司共同完成,双方还成立了一家合资公司,后者将负责相关的系统维护与保障工作。