航听新增题(改)

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1、航海英语听力会话新增题第三章21.Whatisthedifferencebetweena"radarbeacon"anda"radarreflector"?Radarbeaconisafixeddevicethatsendsorreceives,amplifies,alters,andreturnsaradarsignal,permittingadistantreceivertodetermineitsbearingandsometimesitsrange.Radarreflectorisadevicethatreflectsord

2、eflectsradarwaves.22.Howmanyobjectsdoyouneedtogetapositionusing"horizontalsextantangles"?Threeobjects.23.Whyisamagneticcompasskeptonboardwhenagyrocompassismoreaccurate?Magneticcompassisakindofdevicewithstablecharacteristics,whichcanoperateindependently.Whilethegyro-com

3、passcanonlyworkwhenthepowerison.24.Whatdoyoureportwhentheanchorhasbeenheavedoutofthegroundandisclearofit?21Ishouldreport:“anchoraweigh”25.Whenpreparingforanchoringwhatmustyoudobeforereleasingthebowstoppers?Imustchecktheship’sspeedandtheseadepth.26.Wouldyouletgoananchor

4、fromthehawsepipeifthedepthwas75meters?No,Iwouldcastofftheanchorchainbywindlassuntildesiredshacklesismade.27.Whymustyouconsidership'sspeedandseadepthwhenyoureleasethebowstoppers?Becausespeedbeingtoolargeandseadepthtoodeepwillcausetheanchortobreakupandanchormaybelost.28W

5、hatmustalwaysbebroughtandplacedclosetothepilotladderwellbeforethepilot’sembarkation?Lifebuoyandaheavingline.29.Whyisitdangeroustoanchorinice?Becausewe'reliabletodraganchorandanchorchainiseasytobrokewhenanchoringinice.30Whatflagishoistedwhenthepilothas21arrivedonboard?S

6、ignalletterflagH.第五章16.Ifasailingshipisovertakingapower-drivenvessel,whohastherightofway?Thepower-drivenvessel.17.Apower-drivenvesselisonacollisioncoursewithafishingtrawler.Whohastherightofway?Thefishingtrawler.18.Howmanymetersarethereinanauticalmile?1,852meters.19.Ify

7、outravelfromPanamatoNewYork,willyourlatitudeincreaseordecrease?Itwillincrease.20.Howmany"positionlines"areneededtomakeaposition?Atleasttwopositionlines.21.Canyoudefinetheveryimportantterm21"underway"?Yes,Ican.Whenthevesselisnotaground,notanchoredandnotmoortotheshore.22

8、.Youobserveaship,duringdaytime,exhibitingthreeballsonthesamehalyard,Whathashappened?Sheisaground.23.Whatdoestheabbrev