航海英语新题库(上海)[1]

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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]Manyofthesoundingsshownonthecha

2、rtarederivedfrom_____.Unduerelianceshouldnotbeplaceduponthem．A.completeandoftenverypoorsurveysB.correctandoftenverygoodsurveysC.inadequateandoftenveryoldsurveysD.adequateandpresentsurveys[254]Linesonachartwhichconnectpointsofequalmagneticvariationarecalled___

3、___.A.magneticlatitudesB.magneticdeclinationsC.dipD.isogoniclines[255]Isogoniclinesarelinesonachartindicating___.A.pointsofequalvariationB.pointsofzerovariationC.themagneticlatitudeD.magneticdip[256]Inwhichsourcecouldyoufindthenumberofachartforacertaingeograp

4、hicarea?______.A.ChartNo.1B.CatalogofChartsC.IMOPracticalNavigatorD.IMOLightList[257]Howistheannualrateofchangeformagneticvariationshownonapilotchart?______.A.GraylinesontheuppermostinsetchartB.RedlinesonthemainbodyofthechartC.Inparenthesisonthelinesofequalma

5、gneticvariationD.Annualrateofchangeisnotshown.[258]Charteddepthisthe______.A.verticaldistancefromthechartsoundingdatumtotheoceanbottom，plustheheightoftideB.verticaldistancefromthechartsoundingdatumtotheoceanbottomC.averageheightofwateroveraspecifiedperiodofti

6、meD.averageheightofalllowwatersataplace[259]ChartcorrectioninformationisNOTdisseminatedthroughthe______.A.SummaryofCorrectionsB.LocalNoticetoMarinersC.DailyMemorandumD.ChartCorrectionCard[260]Allstraightlinesrepresentgreatcircletracksonachartbasedona(n)______

7、.A.MercatorprojectionB.polyconicprojectionC.orthographicprojectionD.gnomonicprojection[261]Arevisedprintofachartismade______.A.aftereverymajorhydrographicsurveyoftheareacoveredbythechart-84-B.whentherearenumerouscorrectionstobemadeorthecorrectionsareextensive

8、C.whenalow-stocksituationoccursandminorcorrectionsaremadeD.everytwoyearstoupdatethemagneticvariationinformation[262]AMercatorchartisa______.A.cylindricalprojectionB.simpleconicprojectionC