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ID:17410611
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页数:20页
时间:2018-08-31
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1、阅读下面的短文,文中有15处空白,每处空白给出了4个选项,请根据短文的内容从4个选项中选择l个最佳答案,涂在答题卡相应的位置上。51、回答51-65题:ChinatoHelpEuropeDevelopGPSRivalChinaistocontributetoanewglobalsatellitenavigationsystembeingdevelopedbyEuropeannations.TheGalileosatellitesystem51amoreaccuratecivilianalternativetotheGlobalPositioningSystem(GPS
2、),operatedbytheUSmilitary.Chinawillprovide230mEuros(USD259m)in52andwillcooperatewithtechnical,manufacturingandmarketdevelopment.“ChinawillhelpGalileoto53themajorworldinfrastructureforthegrowingmarketforlocationservices,”saidLoyoladePalacio,EUtransportcommissioner.Anewcenterthatwillcoord
3、inateco-operationwasalsoannounced54theEuropeanCommission,theEuropeanSpaceAgency(ESA.andtheChineseMinistryofScienceandTechnologynotlong55TheChina-EuropeGlobalNavigationSatelliteSystemTechnicalTrainingandCooperationCenterwillbe56atBeijingUniversity.Chinahasasubstantialsatellitelaunchindus
4、tryandcouldpotentiallyhelplaunchtheGalileosatellites.TheUShasclaimedthatGalileocouldinterfere57theUSabilitytodowngradetheGPSserviceduringmilitaryconflicts.EuropeanofficialssaythisisunfoundedandcounterthatUSopposition58thecommercialchallengeGalileowouldpresenttoGPS.Galileowillbepreciseto
5、withinameter,whilethecivilianGPSserviceisaccuratetoaround10meters.TheGalileosatelliteconstellationwill5927operationalandthreereservesatellitesorbitingtheEarthatanaltitudeof23,600km.Thesatelliteswillbestrungalongthreemedium-Earthorbitsat56degreesinclinationtotheequatorandwillprovidegloba
6、lcoverage.Thesystemshouldbeoperationalby2008andtheentireprojectisexpectedto60around3.2billionEuros(USD3.6billion).TheEuropeanCommissionhassaidGalileowillprimarilybeusedfortransportationtechnology,scientificresearch,landmanagementanddisastermonitoring.Galileowillprovidetwosignals:astanda
7、rdcivilianoneandinencrypted,wide-bandsignal61thePublicRegulatedService(PRS).ThissecondsignalisdesignedtowithstandlocalizedjammingandwillbeusedbypoliceandmilitaryservicesinEurope.EuropeanCommission62havesaidChinawillnotbegivenaccesstothePRS.ThefirstGalileosatelliteisscheduledtol
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