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2019年4月23日,中国人民海军成立70周年阅兵仪式在黄海举行. (1)两并排行驶的舰艇编队间距较远(如图所示),这是因为若靠得过近,彼此间海水流速会很大,导致压强很 ,压力差会使舰艇发生碰...
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2009年10月l日上午首都各界庆祝大会在北京__广场隆重举行20万军民以盛大的阅兵仪式和群众游行
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2009年4月23日____参加了庆祝人民海军成立60周年的海上大阅兵中国人民解放军建立的第一支海
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2009年4月中国人民解放军在青岛举行大型阅兵活动这是为了庆祝
中国人民解放军空军建立六十周年
中国人民解放军战略导弹__建立六十周年
中国人民解放军建军八十八周年
中国人民解放军海军建立六十周年
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2009年4月23日中国在山东青岛附近的黄海海域举办了海军历史上最大规模的海上阅兵活动____亲临
30周年
40周年
50周年
60周年
2009年4月23日中国人民解放军海军在庆祝海军成立60周年之际首次成功进行海上阅兵此次阅兵过程中领
世昌号
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1949 年 4 月 23 日
1949 年 9 月 1 日
1949 年 11 月 1 日
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10分Inourhyper﹣technologicalagethewayweinteractwithothersface﹣to﹣facetellsothershowwellweworkwithothersaswellasourabilitytomaintaingoodinterpersonalrelations.36Herearefivejobinterviewmistakesthatmillennials千禧一代oftenmakesoyoucanbesurenottomakethemtoo.1.OverusingthewordLikeEventhoughweallhaveproblemswithinsertingthewordintooureverydayspeechgivingoureveryotherwordwithlikehasimplicationsmillennialsmaynotevenbeawareof.372.ForgettingtoputyourphoneonsilentIfyourphoneconstantlypingsandmakesothernoisesduringyourinterviewthepersonyou'retalkingtowillnotbeimpressed.Youareagenerationthatalwayshasaphoneinhand.383.DressinginappropriatelyAlthoughworkattirenowtendsmoretowardcasualthanathree﹣piecebusinesssuitit'sstillincrediblyunprofessionaltoshowupinclothingthat'sclearlynotsuitablefortheoffice.4.TalkingtooproudlyInagenerationthatvaluestheindividualaboveanythingelseitcanfeelalmostlikesecondnaturetotalktoomuchaboutoneself.395.40ApreliminaryGooglesearchregardingthecompanyyouwanttoworkfortakesnomorethan5minutesbuttheknowledgegoesalongway.EventhoughweliveinanageofextremeconnectivityandInternetknowledgeoverloaddon'tforgettobrushuponyourfactsbeforemeetingupwithyourinterviewer.A.Itcanmakeusappearlikewe'reguessingourselvesnotconfident.B.Forgettingtheknowledge.C.Talkingtoomuchisadisadvantagesometimes.D.Remembertofindthebalancebetweensayingtoolittleandsayingtoomuch.E.Notdoingtheresearch.F.Nottakingsecondstomakesureitwon'tdisturbothersisasuresignofcarelessness.G.Thismakesthejobinterviewespeciallycritical.
通过一年的学习你能运用简单的装置和方法制取某些气体.如图是教案备课库常见气体的发生收集装置请你回答有关问题 1写出图中②的仪器名称 2实验室用石灰石和稀盐酸反应制取二氧化碳时应选用的发生装置是选填装置序号该反应的化学方程式 3加热高锰酸钾制取氧气用E装置收集氧气的适宜时间是选填字母. A.当导管口刚有气泡冒出时B.当导管口有连续均匀气泡冒出时
水是宝贵的自然资源以下关于水的叙述中正确的是
某兴趣小组为测定石灰石中碳酸钙的质量分数取12g石灰石样品加入烧杯中将120g稀盐酸平均分四次加入充分反应后杂质不溶于水也不与稀盐酸反应测得实验数据如下 分析数据计算结果精确到0.1% 1该样品中碳酸钙的质量分数. 2所用稀盐酸的溶质质量分数. 312g样品中的碳酸钙恰好完全反应时所得溶液的溶质质量分数.
30分Oneofthemostremarkablethingsaboutthehumanmindisourabilitytoimaginethefuture.Inour1wecanseewhathasnotyethappened.Forexamplewhilewearelookingforwardto2anewplaceorcountrywe3whatitwillbelike.Wepredictthe4peoplewilleatdressandact.Ofcoursewedonotalwayspredictthings5.Thingsareoftenverydifferentfromthewaywe6themtobe. Oneofthe7dreamsinhistoryisthedreamoftheGermanscientistKekulewhohadbeen8toworkoutaverydifficultprobleminphysics.Hehad9andanalyzedtheproblemfromeveryanglefordaysbutthere10tobenowayof11outtheanswer.Thenonenighthewenttobedanddreamed.Whenhe12upherealizedthatheknewtheanswer.Hehadsolvedtheprobleminhis13. Thehypnotist催眠者satinthechairoppositehimandspoke14:Iwantyoutoconcentrateonmyvoice.Thinkabout15.Youknownothingbutmyvoice.Andasyoupayattentiontomyvoiceyour16willgetheavier.Soonyou'llbeasleep. Youwillhearmyvoiceand17mywordsbutyourbodywillbeasleepyoureyesaretooheavy.Youare18asleepandwhenyouwakeupyouwill19nothing. Youwillforgeteverything.NowIamgoingto20slowlyfromonetofive.Onetwothreefourfive. 1.A.brains B.senses C.minds D.sights 2.A.visiting B.seeking C.reaching D.discovering 3.A.imagine B.know C.feel D.guess 4.A.custom B.habit C.style D.way 5.A.quickly B.simply C.correctly D.neatly 6.A.required B.wished C.left D.expected 7.A.funny B.dull C.famous D.silly 8.A.managing B.trying C.thinking D.hoping 9.A.studied B.learned C.discussed D.searched 10.A.used B.ought C.seemed D.had 11.A.bringing B.finding C.turning D.letting 12.A.gave B.sat C.woke D.got 13.A.dream B.lesson C.research D.exercise 14.A.softly B.loudly C.slowly D.firmly 15.A.everything B.something C.nothing D.anything 16.A.eyes B.feet C.head D.body 17.A.believe B.repeat C.take D.understand 18.A.really B.extremely C.actually D.almost 19.A.accept B.remember C.hear D.receive 20.A.count B.say C.add D.speak
下列有关说法正确的是
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8分Oneoftheunpleasantaspectsofbeingamanageristhatyouhavetodealwithemployeeswhoengageinviolatingcompanypolicies.Sometypicaldisciplinaryactionswillbedonesuchasreassignmentorevenfiring.Toolightandtheywillnotsufficientlycommunicatetheseverityoftheinfraction违规行为bothtotheemployeewhobroketherulesandtothepeerswhoarewatching.Tooheavyandyoucreateanunfairenvironmentthatviolateseveryone'sexpectationsforjustice. Weallwanttobelievethatwearefairandthatwewouldbeobjective.Howeverthere'sanimportantfactorthatcouldundermineyourabilitytobefair:sleep.Mycolleagues﹣KyoungminChoattheUniversityofWashingtonandCristianoGuaranaattheUniversityofVirginia﹣andIwantedtoinvestigatethislink.Mypreviousresearchindicatesthatlackofsleepdamagesjudgmentandbehavior.Andtheresearchliteratureindicatesthatlackofsleepleadstoerrorsindecisionmaking.AsIdiscussinmyTEDxtalksleep﹣lackingpeoplearenotefficientwithoutevenbeingawarethat. MycolleaguesandIstartedourresearchbasedonthatlackofsleepcanincreasenegativeresponsestotheinfraction.Sleep﹣lackingpeoplearemorelikelytointerpretanactioninanegativemanner.Thissuggeststhatpeoplewillconductinfractionsmorenegativelywhenthey'resleep﹣lacking.Inadditionlackofsleepmakesitmoredifficulttoregulatenegativeemotions.Thiscanmakepeoplemorelikelytobecomeangrymakingtheminturnmorelikelytorespondnegativelytopeoplewhoengageinpunishablebehaviors.Weassumethatsleep﹣lackingpeoplewouldbemorelikelytogiveharsherpunishments. Basedonthisfindingouradvicetomanagersistobeawareofthispotentialeffectonyourjudgment.Ifastaffengagesinapunishableinfractionafteryou'vehadashortnightofsleepyoumayallocateapunishmentthatisharsherthannecessarycontributingtoanunfairworkenvironment. Twopotentialwaystoaddressthiswouldbetoeitherdelaydecidingonadisciplinarymeasureuntilyouhavehadabetternightofsleepordeliberatelydiscountthemeasuretosoftentheeffectofyourlackofsleep.Giventhedifficultyofmeasuringthesecondapproachthefirstapproachisprobablythebetteroption.Anditbearsrepeating:Ifyouwanttobeabettermanageraimtogetatleasteighthoursofsleepeachnight. 28.Whatdoestheauthorsayaboutdisciplinaryactions? A.Employeesshouldbefired. B.Bonuseswillberemoved. C.Severerulesshouldbeperformed. D.Itishardtobalancethepunishments. 29.Theunderlinedwordundermineisclosestinmeaningto. A.change B.influence C.determine D.weaken 30.Whatwouldasleepymanagerdo? A.Realizethesideeffectofitandtakeactions. B.Throwmoreseverepunishment. C.Getridofthenegativeatmosphereinthecompany. D.Regulatethenegativeemotions. 31.Whichofthefollowingstatementsistrueaccordingtothetext? A.Agoodsleepleadstoafairenvironment. B.Unfairworkenvironmentisduetoweakpunishments. C.Itisnecessarytogivepunishmentsafteragoodsleep. D.Eighthoursofsleepeachnightisthebottomline.
有一包固体可能含有NaClNaOHNa2CO3Na2SO4MgCl2中的一种或几种.为确定其组成取少量固体加足量水溶解得到无色溶液M进行如图实验. 试推断 1白色沉淀B是填化学式. 2原固体中一定含有的物质是. 3无色滤液2中一定含有的阳离子是填离子符号. 4通过上述实验可知还有一种物质不能确定是否存在为进一步确定应采用的方法是.
如图是甲乙丙三种固体物质的溶解度曲线图请回答 1t1℃时甲物质的溶解度为g. 2乙中有少量甲提纯乙的方法是. 3将t1℃时丙的饱和溶液升温到t2℃观察到的现象是. 4t2℃时等质量甲乙丙三种物质的饱和溶液降温至t1℃所得溶液质量最小的是.
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如图是甲乙两种固体物质的溶解度曲线.下列有关叙述正确的是
8分AprincipalinManhattaninformedparentsthattherewouldbenomorehomeworkforthepublicschool'sstudents.Andthencamethearguments﹣﹣﹣notfromteachersbutfromparents.Somesaidtheywouldtransfertheirchildrentoanotherschool.Somesaidtheywerefindingonlinesourcesofhomeworkfortheirchildren.TheywerenotconvincedbytheexplanationfromPrincipalJaneHsuaboutthenegativeeffectsofhomeworkonyoungchildrenincludinglackoftimeforotheractivitiesandfamilytimeandlossofinterestinlearning.Hsusuggestedchildrenshouldspendtheirtimeonactivitiesthathadbeenfoundtobegoodfortheiracademicsocialandemotionaldevelopment. AsasupporterofHsu'sapproachIwonderhowmanyoftheparentalargumentsoccurnotbecauseofwhatchildrenwillmissoutonbutbecauseparentsthemselvesnolongerfeelconfidentabouttheirabilitytohelptheirchildrendevelopwithouthighlystructuredactivitiestoguidethem. I'mremindedofameetingattheschoolmyyoungerdaughterwasabouttostartwhenshewas6.Theheadoftheschoolmetwithparentstosaythatshewasalsoconsideringdoingawaywithhomework.Onemomobjectedbecausehomeworkwasherspecialtimeeachdaywithherchildwhentheycouldsitdowntogethertogothroughthework.Theheadoftheschoolappearedsurprisedatthis.Shegentlysuggestedthatthemothershouldreadtoherchildorthattheyshouldcookdinnertogether. It'sbeensadtoseethatkidsbetweentheirstructuredsoccerpracticesandtheirhomeworkhaveverylittletimetoplay.Butit'sevensaddertoseetheparentalnervousnessaroundwhatmighthappentoathird﹣graderwhohasmoretimetocreatethinkreadinteractwithothersorimagine.WhatmighthappenIbelievemustbemorehappinessmoreenergyandbetterphysicalfitness. 32.Fromthepassageweknow. A.teachersarestronglyopposedtogivingnohomeworktotheirstudents B.theideaofnohomeworkhasledtoaheateddebate C.childrengreatlybenefitfromtheideaofnohomework D.otheractivitieshavetakentheplaceofthehomework 33.Whydidonemomobjecttotheideaofnohomeworkforkids? A.Herchildmightloseinterestinlearning. B.Herchildmighthavelesstimetothink. C.Sheenjoyedthetimedoinghomeworkwithherchild. D.Homeworkisgoodforchildren'sacademicdevelopment. 34.Whatistheauthor'sattitudetowardsPrincipalJaneHsu'ssuggestion? A.Indifferent. B.Positive. C.Negative. D.Critical. 35.Thepassageismainlyabout. A.whethertheparentsshouldtransfertheirchildrentopublicschool B.thebenefitsofdoinghomework C.thenecessityofchangingtheeducationsystem D.whetherthestudentsshoulddohomeworkafterschool.
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1用化学式填空石墨改良酸性土壤的碱. 2火箭推进器中装有液态肼N2H4和过氧化氢当它们混合反应时放出大量的热量同时产生一种气态单质和一种常见的液体写出有关反应的化学方程式. 3在一定条件下A和B两种物质发生反应生成C和D.如图为该反应的微观示意图. ①从微观角度分析该反应的实质是. ②该反应中生成C和D的质量比是. 4在托盘天平灵敏度极高两边各放盛有等质量等质量分数足量稀硫酸的烧杯天平平衡.向左烧杯中加入一定质量的金属M同时向右烧杯中加入相同质量的金属N观察到从反应开始至结束天平指针始终偏向右边注反应中都生成十2价的硫酸盐.则 ①MN两种金属的活动性由强到弱的顺序为. ②MN两种金属的相对原子质量由大到小的顺序为.
15分Forcenturiesaroundtheworldpeoplehaveinventedmanypastimestokeepthem61entertain.We'reluckyenoughtolivein62timewhenalotofushavealotoffreetimewhichmeanswe're63constantinventingandre﹣inventingsportssoitisnot64surprisethattheworldofathleticcompetitionsometimesbecomesstrangerandstranger.Howevertheworld'sweirdestsportsarenotnew65wereinventedeons千万年agobeforepeoplehadtheInternettoentertainthem. Finlandisacountrythatinventedthesportofwife﹣carrying.Thesportisbasicallyanannualcompetition66husbandsrunanobstaclecoursewhilecarryingtheir67wifeontheirbacks.Themostfamouscompetition68holdinSonkjarviFinland.Therearedifferentcarryingstylesinvolvingpiggybackingfireman'scarryandtheEstonian﹣stylewherethewomanhangsupside﹣down69herlegsaroundtheman'sshoulders.Thesporthasspreadtootherpartsoftheworld70includetheUSandAustralia.
8分IwasjustinFrancetovisitmygrandmotherwhoisverydeartome.Idon'tgettocrosstheAtlanticveryoftenandshe'snow96yearsoldsoeverytimeIvisitherthetwoofusareveryawarethatitmightbethelasttimeweseeeachother. LastyearIdidaseriesofshortvideointerviewsaboutherlife.Iaskedherwhatitwaslikegrowingupwithherfatherinthe1910sandlivingalonewithtwoyoungchildren.Iaskedherabouthergreatestmemoriesandherfavoritebooksfoodsetc.IlearnedalotofamazingnewthingsaboutherIhadneverknownbefore.Thesewereveryintimateconversationswhichmademebetterknowher. ThisyearIdidnotreallyhavequestionsandIonlyhadagreatdesiretomakeherknowhowmuchIlovedher.Icookedforherandreadherstories.Igaveherafootmassage按摩whichwasherfirstever! BeforeleavingIwaslookingforawaytoleavesomethingmeaningfulbehindbesidesthememoryofourtimetogether.ThereforeIwroteherfivedifferentlovenotesandhidthemindifferentplaceswhereIknewshewouldeventuallyfindthem. IleftreallyjoyouslyknowingthatthesecardswouldsurelycheerherupafterIleft.ShecalledmeasIwastravellingbacktoParistocatchmyplanebacktotheUSandsaidIfoundyourcards!BythetimeIdiscoveredthelastoneIwaslaughingoutloud!Thankyousomuchmysweetheart!Ismiledtomyselfknowingshestillhadtwomoretogo!ItwasSundaysomyguesswasthatshehadnotcheckedhermailboxandhadnotyetdrivenhercar! 1.TheunderlinedwordintimateinParagraph2probablymeans A.close B.inspiring C.impressive D.usual 2.Whatcanbeinferredfromthepassage? A.TheauthorwenttoFrancetovisithergrandmotherveryfrequently. B.Theauthordidn'texpecthergrandmothertofindallthefivecards. C.Theauthorandhergrandmotherenjoyedthetimetheystayedtogether. D.Theauthor'shomeisnotfarfromhergrandmother's. 3.Fromthelastparagraphweknowthat A.grandmotherfoundallthecardsimmediatelytheauthorleft. B.grandmotherhadnotcheckedhermailboxbeforethecall. C.grandmotheralwayscallstheauthorbeforeshegetsontheairplane D.grandmotherdoesexercisesbyfindingthecards. ~~4.Whatmightbethebesttitleofthepassage? A.Thewonderfultimewithgrandmother B.Themeaningfullovenotes C.Thepersonwhoinfluencesmemost D.Thefamilyhasanoldatreasure.
10分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一篇作文.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∧并在其下面写出该加的词; 删除:把多余的词用斜线/划掉; 修改: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. Timeisvaluablebutlimit.ThereisafamoussayingTimeislifethisshowstheimportanceoftime.Whentimehadgoneit'llneverreturn.It'sapitywhenmanypeoplemakepooruseoftime.Theyspendtheirprecioustimeoversleepingdrinkingandhangingaround.Theydon'trealizewastingtimeisequalwithwastingtheirlife.Theyalwaysregrethavingmadelittleachievementsofar.Howeverweshouldformthehabitofvaluetime.Don'tputoffwhatcanbedonetodaytomorrow.Lazinesswillnotonlybringusthefailurebutalsoleadustotheroadtopovertyandevendeaths.
物质的下列用途主要利用其化学性质的是
6分BritishAirwaysbookingsecrets﹣andthebestlatedealsthisweek:ShortholidaysandEuropeancitybreaks. Dublinfrom£109pp:EnjoytheEmeraldIslewithouttheStPatrick'sDaycrowds.Departing20thMarchthispackageincludesatwonightstayatthefour﹣starKingsWoodHotelCitywestandreturnflightsfromLondonStansted.Clickhere. Brugesfrom£159pp:Treatmumtoamother'sdaycitybreakinthemedievalfairy﹣taletownofBrugesandenjoycanal﹣sidestrollsandanicehelpingofculture.Priceincludestwonightsatthefour﹣starNHBruggewithtravelfromLondonStPancrasdeparting20thMarch.Clickhere. Madridfrom£166pp:FlyfromLiverpoolonMarch27forthreenights'B&Batthethree﹣starEspahotelPlazadeEspana.RealMadriddon'thaveafootballgamethensoseeifRonaldofanciesacerveza.Clickhere. FrenchAlpsfrom£499pp:Saveover£320eachonaweek'sskiingatLesArcs2000stayingcateredattheChaletVanoise.BasedontwosharingandincludesflightsfromManchesteronMarch18andtransfers.Six﹣dayliftpassesfrom£219equipmenthirefrom£65.Clickhere. Tenerifefrom£289pp:GetyourtanonearlywithatriptotheEuropeanhomeofbeaches:Tenerifewithitspostcardperfectgoldensand.Spendsevennightsatthefour﹣starHotelSpaLaQuintaParkSuitesdeparting6thMayandincludingreturnflights.Clickhere. 21.Whichdestinationisthecheapest? A.Dublin. B.Bruges. C.FrenchAlps. D.Tenerife. 22.WhatspecialfeatureisMadridnotedfor? A.Skiing. B.Football. C.Sunshine. D.Culture. 23.Wherewouldyoumostprobablyseethistext? A.UKairlines. B.Amagazine. C.ATVprogram. D.TheInternet.
现有甲乙丙三种金属如果把甲和乙分别放入稀硫酸中甲溶解并产生氢气乙不反应如果把乙和丙分别放入硝酸银溶液中过一会儿在乙的表面有银析出而丙没有变化根据以上事实则甲乙丙的金属活动性由强到弱的顺序是
有一不纯的Na2CO3样品杂质可能是K2CO3CaCO3FeCl3和NaCl中的一种或几种取该样品10.6g加入足量稀盐酸完全反应后得到无色容液同时产生4.4g气体下列判断正确的是
物质的俗名与化学式一致的是
2018年世界杯正在俄罗斯如火如荼的进行.这是全世界足球爱好者的盛会! 1体育馆的建设使用钢铁钢铁属于填“混合物”成“纯净物” 2赛事中涉及的如下设施用具等其主要材料属于合成材料的是填字母. A.场馆塑料座椅B.“大力神”镀金奖杯 C.纯棉运动袜D.吉祥物的涤纶内充物 3世界杯是球迷的狂欢节大量饮品被消费.其中的啤酒含有酒情酒精的化学式为. 4绿茵场上运动员受伤时常喷一种止痛喷剂其主要成分为氯乙烷化学式为CH3CH2Cl氯乙烷是由种元素组成的. 5餐厅为运动员提供了丰富食品 A.鸡蛋B.面包C牛奶D.巧克力E.新鲜蔬菜等. 其中富含糖类的有填字母
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