【北师大版】2014届高三英语一轮复习课件:Unit-22-Environmental-Protection.ppt
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【北师大版】2014届高三英语一轮复习课件:Unit-22-Environmental-Protection.ppt

【北师大版】2014届高三英语一轮复习课件:Unit-22-Environmental-Protection.ppt

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ChinaLaunchesSuper­SpeedTestTrainChina’slargestrailvehiclemaker,CSRCorp.Ltd,overtheweekendlauncheditsfirsttesttrainthatfeaturesspeedsreachingupto500kmperhour.Thesix­cartrainwithafair­shapedheadisthenewestintheCRHseries.Ithasamaximumtractivepowerof22,800kilowatts,comparedwith9,600kilowattsfortheCRH380trainscurrentlyinserviceontheBeijing­ShanghaiHigh­SpeedRailway,whichholdtheworldspeedrecordof300kmperhour.Thegrey­colortraincarryingtestinganddataprocessingfacilitieswasdesignedandproducedbyCSRSiFangLocomotive&RollingStockCo.,Ltd(SiFangLocomotive),aCSRsubsidiarybasedinthecoastalcityofQingdaoineasternShandongProvince.DingSansan,thecompany’schieftechnician,saidtheconceptofthesuper­speedtraindesignwasinspiredbyChina’sancientsword.Thebodyworkusesplasticmaterialsreinforcedwithcarbonfiber.ShenZhiyun,alocomotiveexpertandacademicianwithboththeChineseacademiesofsciencesandengineering,saidthetestingofthesuper­speedtrainwithspeedsofupto500kmperhourwillprovideusefulreferenceforcurrenthigh­speedrailwayoperations.trapthreatenarmconsideratereplacewayapartfrom
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