学科分类
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500 个结果
  • 简介:话题呈现水是万物之源,没有水,人类和动物就无法生存。因此,人人都有保护水资源和节约水资源的职责。某期刊正在开展以水为主题的征文活动,请你根据下面的信息写一篇短文参加征文。短文内容包括水的重要性、水的用途、水的现状及我们该如何保护水源和节约用水。

  • 标签: 英语 阅读材料
  • 简介:水对于人们来说非常重要。我们必须每天喝水。没有水我们不能生存。水在我们周围随处可见。在家里,我们用水洗衣服、洗碗、做饭、打扫房间、制作饮料、刷牙、洗澡等。在工作中,人们用水灭火、种菜、在工厂做东西等。我们还可以在地球上游泳。水对我们很重要,不是吗?

  • 标签: 小学 英语 课外阅读 阅读材料
  • 简介:Thestructuralpropertiesofwateratdifferenttemperatureshavebeeninestigatedusingaflexiblewatermodelintheisothermal-isobaricensemble.Withdecreasingtemperature,thetetrahedralityofthedistributionofthewatermoleculesaroundthecentralwatermoleculeisenhanced,andthehydrogenbondsbecomemorelinear.Bymeansofaconjugategradientenergyminimization,dynamicalconfigurationsatvarioustemperatureshavebeenmappedontonearbypotential-energyminima,the50°-60°peak(P1)inthedistributionfunctionoftheO-O-Oangleofatrimerbecomesfarsmaller.HoweverthereappearstobeasmallbutobservabletemperaturedependenceofP1,i.e.thehigherthetemperature,thehighertheP1intensity.

  • 标签: 结构特性 可塑性水模型
  • 简介:Withthedevelopmentofscienceandtechnology,theresearchesandapplicationofwaterresourcesincludingthegaswaterhavebeenconstantlydeveloped.Throughananalysisontheflawsofthewaterrighttheory,andbyexecutingreconstructionandrenewalofthetheoryandsystemofwaterrightinmodernsociety,thewaterrightpositionofthegaswaterwillbeestab-lished,leadingtothematurityofthewholelaweffectivenessandsubstantialresultsofwaterright.

  • 标签: 水资源 气态水 水法 水权 中国
  • 简介:AwaterbearerinIndiahadtwolargepots,eachhungoneachendofapolewhichhecarriedacrosshisneck.Oneofthepotshadacrackinit,whiletheotherpotwasperfectandalwaysdeliveredafullportionofwaterattheendofthelongwalkfromthestreamtothemaster'shouse,andthecrackedpotwasonlyhalffullwhenthewaterbearerarrived.Fortwoyearsthiswentondaily.Ofcourse,theperfectpotwasproudofitsperfectiontowhichitwasbrought.Butthepoorcrackedpotwasashamedof...

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  • 简介:每个人都有弱点,即便是那些看上去很强的人也如此。过分在意自身的缺陷,就无法强化你的优势。记住:我们都是被上帝咬了一口的苹果。

  • 标签: 中等教育 英语教学 课外教材 英文
  • 简介:Thefishinthewaterissilent,Theanimalontheearthisnoisy,Thebirdintheairissinging.Butmanhasinhimthesilenceofthesea,ThenoiseoftheearthAndthemusicoftheair.

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  • 简介:一只有裂缝的水罐为自己的缺陷而深感内疚,但它忽略了由它浇灌出的美丽花朵。人人都有属于自己的不足,只要正视它们,那么……AwaterbearerinIndiahadtwolargepots,eachhungoneachendofapole,whichhecarriedacrosshisneck.Oneofthepotshadacrack(裂缝)init,andwhiletheotherpotwasperfectandalwaysdeliveredafullportionofwaterattheendofthelongwalkfromthestreamtothemaster蒺shouse,thecrackedpotarrivedonlyhalffull.Fortwoyearsthiswentondaily,withthewaterbearerdeliveringoneandone鄄halfpotsfullofwatertohismaster...

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  • 简介:Therewasonceakingwhowassosick,everyonethoughthewasgoingtodie.Histhreesonswereverysad.Theysatinthepalacegardenandwept.Theretheymetanoldmanwhoaskedthemwhatthetroublewas.Theytoldhimtheirfatherwasveryillandwouldsurelydie.Theoldmansaid,"Iknowofacure,andthatisthewateroflife.Ifhedrinkssomeofthat,hewillgetwellagain.Butitishardtofind."

  • 标签: 国王 皇宫