航海英语新题库(上海)

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1、一、海图及海图作业50题[251]Toagreewithlargerscalechart，latitudestakenfromthischartshouldbeincreased______about8seconds．A.withB.inC.byD.to[252]Onthischartonlytheprinciple______tonavigationareshown．A.equipment'sB.toolsC.apparatusD.aids[253]Manyofthesoundingsshownonthechartarederivedfrom_____.U

2、nduerelianceshouldnotbeplaceduponthem．A.completeandoftenverypoorsurveysB.correctandoftenverygoodsurveysC.inadequateandoftenveryoldsurveysD.adequateandpresentsurveys[254]Linesonachartwhichconnectpointsofequalmagneticvariationarecalled______.A.magneticlatitudesB.magneticdeclinationsC

3、.dipD.isogoniclines[255]Isogoniclinesarelinesonachartindicating___.A.pointsofequalvariationB.pointsofzerovariationC.themagneticlatitudeD.magneticdip[256]Inwhichsourcecouldyoufindthenumberofachartforacertaingeographicarea?______.A.ChartNo.1B.CatalogofChartsC.IMOPracticalNavigatorD.I

4、MOLightList[257]Howistheannualrateofchangeformagneticvariationshownonapilotchart?______.A.GraylinesontheuppermostinsetchartB.RedlinesonthemainbodyofthechartC.InparenthesisonthelinesofequalmagneticvariationD.Annualrateofchangeisnotshown.[258]Charteddepthisthe______.A.verticaldistanc

5、efromthechartsoundingdatumtotheoceanbottom，plustheheightoftideB.verticaldistancefromthechartsoundingdatumtotheoceanbottomC.averageheightofwateroveraspecifiedperiodoftimeD.averageheightofalllowwatersataplace[259]ChartcorrectioninformationisNOTdisseminatedthroughthe______.A.Summaryof

6、CorrectionsB.LocalNoticetoMarinersC.DailyMemorandumD.ChartCorrectionCard[260]Allstraightlinesrepresentgreatcircletracksonachartbasedona(n)______.A.MercatorprojectionB.polyconicprojectionC.orthographicprojectionD.gnomonicprojection[261]Arevisedprintofachartismade______.A.aftereverym

7、ajorhydrographicsurveyoftheareacoveredbythechartB.whentherearenumerouscorrectionstobemadeorthecorrectionsareextensiveC.whenalow-stocksituationoccursandminorcorrectionsaremadeD.everytwoyearstoupdatethemagneticvariationinformation[262]AMercatorchartisa______.A.cylindricalprojectionB.

8、simpleconicprojectionC.pol