航海英语新题库(上海).doc

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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]Manyofthesoundingsshownonthechartarederivedf

2、rom_____.Unduerelianceshouldnotbeplaceduponthem．A.completeandoftenverypoorsurveysB.correctandoftenverygoodsurveysC.inadequateandoftenveryoldsurveysD.adequateandpresentsurveys[254]Linesonachartwhichconnectpointsofequalmagneticvariationarecalled______.A.magneticlatitudesB.m

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

4、artsC.IMOPracticalNavigatorD.IMOLightList[257]Howistheannualrateofchangeformagneticvariationshownonapilotchart?______.A.GraylinesontheuppermostinsetchartB.RedlinesonthemainbodyofthechartC.InparenthesisonthelinesofequalmagneticvariationD.Annualrateofchangeisnotshown.[258]C

5、harteddepthisthe______.A.verticaldistancefromthechartsoundingdatumtotheoceanbottom，plustheheightoftideB.verticaldistancefromthechartsoundingdatumtotheoceanbottomC.averageheightofwateroveraspecifiedperiodoftimeD.averageheightofalllowwatersataplace[259]Chartcorrectioninform

6、ationisNOTdisseminatedthroughthe______.A.SummaryofCorrectionsB.LocalNoticetoMarinersC.DailyMemorandumD.ChartCorrectionCard[260]Allstraightlinesrepresentgreatcircletracksonachartbasedona(n)______.A.MercatorprojectionB.polyconicprojectionC.orthographicprojectionD.gnomonicpr

7、ojection[261]Arevisedprintofachartismade______.A.aftereverymajorhydrographicsurveyoftheareacoveredbythechartB.whentherearenumerouscorrectionstobemadeorthecorrectionsareextensiveC.whenalow-stocksituationoccursandminorcorrectionsaremadeD.everytwoyearstoupdatethemagneticvari

8、ationinformation[262]AMercatorchartisa______.A.cylindricalprojectionB.simpleconicprojectionC.pol