首页
试卷库
试题库
当前位置：
X题卡
>
所有题目
>
题目详情
查看本题答案
包含此试题的试卷
教案备课库《》真题及答案
点击查看
你可能感兴趣的试题
热门试题
更多
电子工业常用30%的FeCl3溶液腐蚀绝缘板上的铜箔制作印刷电路板．下列说法正确的是
将4名学生分配到5间宿舍中的任意2间住宿每间宿舍2人则不同的分配方法有
假如你是李华你的英国朋友Edward正在学习汉语希望你推荐一个适合他学习汉语的网站.请你根据以下内容给他回复邮件. 推荐网站www.edchinese.com 网站内容 1.网络课程中文情景对话中国风俗成语 2.其它中文电影中文歌曲唐诗等 3.有在线教师答疑解惑. 费用全部免费 注意1.词数100左右 2.可以适当增加细节以使行文连贯. .
HowtoManageYourPhone'sDataUse Smartphonesgiveyouaccesstoawealthofinformationandmediabutmostnetworksputalimitontheamountofdatayoucanuseeachmonth.Atypicalphonecontractincludesadataallowanceofbetween500MBand10GBpermonth.1Youseeyourusagecanmountupsurprisinglyquickly﹣watchingafilmonthephoneisabout700MBinSDanhourofstreamingTVisaround500MBor60﹣140MBforthesameofradiochattingonSkypeforanhourisaround40MB.2 •IfpossiblewaituntilyoucanconnecttofreeWi﹣Fibeforeusingyourphone'sdatafeatures. •Whenyouareontheroaduseyourcar'sGPSnotyourphonetofindtheway.3ButmapsarepreloadedinaGPSmakingthisfreetouse. •4Manyofthesearefundedbyadsthatpopuponyourscreen.Everyadhastodownloadthroughyournetworkusingupyourdataallowance. •Ifyouregularlyneedtousealotofdataonyourphoneconsideradata﹣compressing压缩appsuchasOnavowww.onavo.com.5Soyouuselessofyourmonthlyallowance.Youmayhavetosubscribetosuchcompressionservicessoyou'llneedtoweighupwhetherit'sworththecost. A.Themoredatathehigherthemonthlycost. B.RemembertousefreeWi﹣Fianywhereyougo. C.Trythesetipstobettermanageyourdatause. D.Itcompressesdatabeforeitisfedtoyourphone. E.Butyoumightenduppayingmorethanexpected. F.Thephonehastodownloadmapdataasyoumove. G.Becarefulofhowmanyfreegamesyouplayonthephone.
雾能产生丁达尔效应与雾属于同种分散系的是
下列环境问题与所对应的物质无关的是
Longschoolholidayshelpstudentscleartheirheadsrelaxalittleandstretchtheirbrainsindifferentways. Traditionallyschoolingscheduleshavelongbeenbasedmoreontheneedsofsocietythanonefficienteducationstrategies.ForinstanceinIcelanditwastraditionallyarrangedtoallowchildrentohelpoutwithharvest.Othercountrieshavelongsummervacationsbecauseitissimplytoohottostudy.Inotherareaswherereligionplaysanimportantroleintheholidayseasonthereligioncalendarthencallsforthebreaksothatstudentscanhaveampletimetoparticipateinthereligiousceremoniesandtraditionsofseasonalholidays. Therearesomeobviousadvantagestoavacationthatlastslonger.Familieswholivealongdistancefromrelativesareabletotraveltogethersometimesacrosstheoceaninordertoconnectwiththeirlovedones.Evenifthereisnovisitingfamilyfarawayalongholidayisagreatopportunityforkidstointeractwiththecommunity.Fromaneducationalpointofviewachildthatisabletoexperienceanotherculturecangainvaluablelanguagehistoryandsocialskills. Longschoolholidaysarealsoneededinschoolsthathavebecomeoverlyacademicandtooexam﹣focusedinrecentyearswhichrequiresaconsiderablylongerholidaybreakfromsuchamarathonpumping灌输ofknowledgeanditmakesgreatsense! GreatpsychologistslikeFreudandPiagethavestressedplay'scentralroleintheformationoffully﹣rounded全面发展的individualssothelongholidayachievesthisbyallowingstudentstoexploretheworldoutsideschool.Thestudentsgettoparticipateinactivitiesthatwouldbedifficulttododuringaregularschoolterm. Asaconsequencelongschoolholidaycanbequiteconstructivetoourstudents! 28.Whattraditionallydeterminesthearrangementofschoolholidays? A.Localneeds. B.Culturalactivities. C.Religiouscustoms. D.Academicperformance. 29.Whichisoneoftheadvantagesoflongholidays? A.Studentsrunawayfromexams. B.Childrencanlearnscienceandhistory. C.Fewercoursesarerequiredatschool. D.Familybondsarestrengthened. 30.FreudandPiagetmayprobablyagreethat. A.schoolsneedlongerholidays B.holidayactivitiesarenecessary C.playismoreimportantthanlearning D.studentsshouldtravelaroundtheworld 31.Whatisthebesttitleofthepassage? A.TraditionalSchoolHolidays B.ActivitiesforLongHolidays C.BenefitsofLongHolidays D.AdvicefromPsychologists.
设fx=2x+x-4则函数fx的零点位于区间
Ofthethreemajordrinksoftheworld﹣teacoffeeandcocoa﹣teaisconsumedbythe1largenumberofpeople. Chinaisthehomelandoftea.Humancultivationofteaplantsdatesbacktotwothousandyearsago.TeafromChinaalong2hersilkandporcelainbegantobeknowntotheworldmorethanathousandyearsagoandsincethenit3beanimportantChineseexport. AtpresentmorethanfortycountriesintheworldgrowteawithAsiancountries4produce90%oftheworld'stotaloutput.AllteatreesinothercountrieshavetheirorigindirectlyorindirectlyinChina.Thewordfortealeavesorteaas5drinkinmanycountriesarederivatives衍生物fromtheChinesecharactercha.TheRussianscallitcha'i6soundslikechayetealeavesasitispronouncedinnorthernChinaandtheEnglishwordteasoundssimilartothepronunciationof7itcounterpart对应物inXiamen.TheJapanesecharacterforteaiswritten8exactthesameasitisinChinesethough9pronouncewithaslightdifference.ThehabitofteadrinkingspreadtoJapaninthe6thcenturybutitwasnotintroducedtoEuropeandAmericatillthe17thand18thcenturies.Nowthenumberoftea10drinkintheworldisstillontheincrease.
下列函数中既是奇函数又在区间-∞0上单调递增的函数是
依据元素的原子结构和性质的变化规律推断下列元素非金属性最强的是
一定量Cl2通入足量的水中发生反应Cl2+H2O＝HClO+HCl．能说明该反应的产物中可能含有Cl﹣的是
配制0.200mol•L﹣1的NaCl溶液1L需要的容量瓶规格以及所称量的NaCl质量为
设函数fx=若函数fx的最大值为-1则实数a的取值范围为
常温下2L0.5mol•L﹣1的KNO3溶液含有
某衣服面料成分棉72%聚酯纤维28%下列说法正确的是
某企业有甲乙两个研发小组他们研发新产品成功的概率分别为和．现安排甲组研发新产品A乙组研发新产品B设甲乙两组的研发相互独立． Ⅰ求至少有一种新产品研发成功的概率 Ⅱ若新产品A研发成功预计企业可获利润120万元若新产品B研发成功预计企业可获利润100万元求该企业可获利润的分布列和数学期望．
设函数fx=xlnx的图象与直线y=2x+m相切则实数m的值为
利用如图所示装置箭头表示气体或液体流向可实现的实验是
某温度和有催化剂条件下恒容密闭容器中发生反应N2+3H2⇌2NH3下列说法正确的是
某高科技公司研究开发了一种新产品生产这种新产品的每天固定成木为30000元每生产x件需另投入成本为t元t=每件产品售价为10000元．该新产品在市场上供不应求可全部卖完． 1写出每天利润y关于每天产量x的函数解析式 2当每天产量为多少件时该公司在这一新产品的生产中每天所获利润最大．
同分异构现象是造成有机物种类繁多的重要原因之一．下列各组物质互为同分异构体的是
能作防腐剂又能用调味剂的物质是
已知函数fx=-x3+2x-ex+e-x若fa2+fa-2≥0则实数a的取值范围是
若2x-14=a4x4+a3x3+a2x2+a1x+a0则a4+a2+a0=
MobilephonesandiPadsarenowwonderfultoolsforlearningandteachingEnglish.Withthehelpofthethousandsofeducationandlanguageappsavailableonlinestudentscanmakeeffectiveuseofthemtolearninaninteractiveenvironment.GivenbelowisalistofsomeofthebestappsforlearningandteachingEnglish. GrammarUp GrammaristheheartofanylanguageandthustheGrammarUpappisoneofthemosthighlyrecommendedappsforEnglishlearners.Thisappisspecificallydesignedforpeoplewhowanttoimprovetheirgrammarvocabularyandwordselection.Itconsistsofmorethan1800multiple﹣choicequestionsgroupedundertwentydifferentgrammarcategories. iFPoems iFPoemsisafantasticappforpoetrylovers.Thisappconsistsofagreatcollectionofpoemsfromfamouspoetsaroundtheworld.Italsoallowsuserstosavetheirfavoritesalongwithrecordingtheirownreadingsofthepoems. iBooks iBooksisacompletebooklibraryfortheiPadusers.ItincludestheiBookstoreandallowsuserstodownloadandreadbooks.Theappfeaturesabeautifulbookshelfonwhichyoucanbrowsevariousbooksorevenaddnotestoyourfavoriteparagraphsinthebook.Youcanalsocreateyourowntextsanduploadthemintotheapp. SpeakingPal RecommendedasoneofthebestappsforEnglisheducatorsandlearnersSpeakingPalallowsyoutorecordyourspeechandcompareitwithanativeEnglishspeaker.ThisamazingappcombinesvideowithautomaticspeechrecognitionsoftwarethattestsyourEnglishspeakingskills.YoujusthavetospeakwithavideocharacterandgetimmediateresponseonhowwellyouspeakEnglish. 21.Whatdotheseappshaveincommon? A.Theycanbefoundonline. B.Theyarefreeofcharge. C.Theyimproveusers'grammar. D.They'redesignedbyteachers. 22.WhatcanwedowithiBooks? A.Downloadbooksforfree. B.Writenotesonitwithpens. C.Savenotesandtexts. D.Createabookstore. 23.WhatisspecialaboutSpeakingPal? A.Itoffersvideocallservice. B.Itevaluatesusers'speech. C.Itofferstalkswithanativespeaker. D.ItincludesEnglishspeakingcontests.
合金在生活与生产中具有广泛的应用属于合金的是
定义在0+∞上的函数fx的导数f′x满足x2f′x＜1则下列不等式中一定成立的是
下列属于人工固氮的是
共享单车开启低碳骑行新革命不同单车制造的材料各异关于材料说法正确的是
热门题库
更多
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
高一下学期数学
教案备课库
高一上学期数学
高一上学期化学
教案备课库
教案备课库
教案备课库
高一上学期物理
教案备课库
教案备课库
湘公网安备 43130202000226号