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ID:42294894
大小:765.00 KB
页数:85页
时间:2019-09-12
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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
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