雨课堂学堂在线学堂云《Astronomical Navigation（大连海事）》单元测试考核答案

第1题ZhengHe'svoyagetotheWesthasabout______ships.

A1000B200C500D5第2题WhatisthemeaningofZhengHe'svoyagestotheWest?

AHeopenedadirectrouteconnectingtheWesternPacificOceanandtheIndianOcean.B

DemonstratingtotheworldthestrengthofChinaintheearlyMingDynasty.C

RepresentingthepeakofChina'smaritimeexplorationandisthelastinternationaleventinancientChinesehistory.

DAllofabove.第3题WhichonedoesnotbelongtotheuniqueAmericancropdiscoveredbytheColumbusfleet?___.ACornBPotatoCTomatoDSweetpotato第4题InthefirstvoyageforVascoGamatoIndia,howmanyboatwereburnedforvariousreasons?

A0B1C2D3第5题ThetaskofMagellan’s

journeyistofind___.ASilkBIvoryCPorcelainDSpices第6题ThetaskofMagellan’sjourneyistofind___.ASilkBIvoryCPorcelainDSpices第7题Whatwasthecauseofthe"failure"ofthecompasswhentheColumbusfleetsailedintheAtlantic?___.AMagneticstormBMagneticdifferenceCBigstormDInstrumentdamage第8题Magellan’sfleetwantedtofindthestraitfrom____to_____allthetime.

AMediterraneanSea,IndianOceanBAtlanticOcean,MediterraneanSeaCAtlanticOcean,PacificOceanDIndianOcean,SouthChinaSea第9题WhatistheflagshipoftheColumbusexplorationteam?

ATheSaintMariaBTheNinjaCThePintaDTheVictoria第10题What’sthetaskinthefirstvoyageforVascoGamatoIndia?

AFromLisbontoCapeofgoodhopetoIndia.BFromLisbontoTunisiatoIndia.CFromCapeofgoodhopetoLisbontoIndia.DFromCapeofgoodhopetoTunisiatoIndia.第1题What’smethodthemostcommonlyusedformaritimedivision?AThehalfcircumferencemethodBThecircumferencemethodCThecompasspointmethodDThefourpointbearing第2题Accordingtothecompasspointmethod,SSWisrepresentedbythecirclemethodis_____.A202.5°B191.25°C247.5°D236.25°第3题Moderntechnologyistosuspendthecompassinthepreparedliquidandcloseit.Wecallit_____.AmagneticcompassBgyrocompassCcompassDfiberopticcompass第4题Whatistherangeofgeographiclatitude?

A0-120ºB90-180ºC0-180ºD0-90º第5题Theunitofspeedatseaisusuallyknots,andoneknotequals_____.A1nmile/sB1nmile/hC1km/hD1km/s第6题Whenthesunisinthemiddleofthesky,Thedistancebetweenthezenithandthesunisequalto_____minustheheightofthesun.

A90°B45°C30°D75°第7题WhichprojectionmethodisusedbyMercatorprojection?_____.APlanarprojectionBConicprojectionCConcentricprojectionDEquiangularcylindricalprojection第8题In1875,St.Hilaire,aFrenchnavigator,cameupwithamethodcalled___tosolvethemappingproblemofastronomicalshippositioncircle.

ALatitudedifferencemethodBheightdifferencemethodCTargetorientationmethodDContinuousobservationandpositioningmethod第9题ThereisastarinthegeographicalNorthPole,calledPolaris,whichisthealphastarof_____.AthebigbearconstellationBthelittlebearconstellationCAndromedaDSagittarius第10题Onthetruegroundleveloftheobserver.peopledeterminetheEastandtheWestfromthenorth,____ontheleftand____ontheright.AEast,WestBWest,EastCSouth,WestDWest,SouthChapter3UnitTest第1题whatcausedthediurnalapparentmotionofcelestialbodies?AEarthrotationBEarthrevolutionCMoonrevolutionDMoonrotation第2题Thecelestialbodysetsbelowthehorizoninthe___.AEastBWestCSouthDNorth第3题Whenthevernalequinoxandautumnalequinox.thetimeofdayandnightwillbe___.AnotequalBshorterCequalDlonger第4题theorbitoftheearth'srevolutionisa___.AcircleBellipseCarcDspiral第5题themoonweseeeverydaydelaysreachingthesamepositionby___.A60minutesB50minutesC40minutesD30minutes第6题Inastronomicalpositioning,Whichplanetwecanobserve?

AVenusBJupiterCSaturnDAllofabove第7题Thediameterofthesunis_____timesthediameterofthemoon.A300B400C500D600第8题What’sthereasoncausedthetotalsolareclipse?AThemoon,theearthandthesunareinastraightlinewiththemooninthemiddleBThemoon,theearthandthesunareinastraightlinewiththeearthinthemiddleCThemoon,earthandsunareonthesameplaneDThemoon,earthandsunareonacurve第9题Onthefirstdayofthelunarmonth,themoonalsonamed___.AthefirstquartermoonBthenewmoonCthefullmoonDthedownwardchordofthemoon第10题Wecanjudgethecelestialbodyriseorsetofby___.AthetruehorizoncirclethroughtheearthcenterBTruehorizoncircleCMeasurersubcircleDMeridiancircleChapter4UnitTest第1题Theorbitalspeedoftheplanetsinthesolarsystemtheclosertothesun_____.AthefasterBtheslowerChesameDalloftheabovearetrue第2题Whatistheexpressionofstarbrightnesslevelonnavigation?AStarsizeBApparentmagnitudeCStardistanceDAlloftheabovearetrue第3题Howtofindstarsonnavigation?

AVisualmethodBStarfinderCAstronomicalsoftwareDAlloftheabove第4题Whatisthecentralrightascensionofthespringstarrysky?A0°B90°C180°D270°第5题WhatisthecentralrightascensionoftheWinterstarrysky?A0°B90°C180°D270°Chapter5UnitTest第1题Therearemore____onesolarmeandaythanonesiderealday.

A4minutesB5minutesC6minutesD7minutes第2题Thetimeof1100inUTC+8,WhattimeisintheUTC+6?____.A1000B1200C0900D0800第3题Howmanyyearsisaleapyearinthesolarcalendar?

A3B4C5D6第4题Howmanydaysisthedifferencebetweenalunaryearandatropicalyear?

AAbout25days.BAbout20days.CAbout11days.DAbout5days第5题TheSolarcalendarisacalendarbasedon_____.Atheperiodoftheearth'srotationBtheperiodoftheearth'srevolutionCtheperiodofthemoon'srevolutionDtheperiodofthemoon'srotationChapter6UnitTest第1题Theplacewiththelargesttidalrangeintheworldis_____,withanaveragetidalrangeof14.5metersandamaximumof16.3meters.ABayofFundyinCanada.BAngolainAlaska.CQiantangEstuaryinChina.DThamesEstuaryinEngland.第2题Theprocessfromlowwatertohighwateriscall