航海英语甲类真题航英语甲类真题.docVIP

航海英语55期试卷代号 903 A1.You will find information about the duration of slack water in the ______. A.Tidal Current Tables B.Tide Tables C.Publications from CCS D.Sailing Directions A2.When a buoy is in position only during a certain period of the year，where may the dates when the buoy is in position be found? A.Light List B.Notice to Mariners C.On the chart D.Coast Pilot D3.When the transmissions of a radio station have broken down，switched off or suspended，it is ______. A.Unfunctional B.Break down C.Off power D.Off air C4.What area of the earth cannot be shown on a standard Mercator chart? A.Equator B.Areas including both North and South latitudes C.North and South Poles D.A narrow band along the central meridian. B5.The maximum difference between mean time and apparent time is ________ . A.equal to the longitude expressed in time units B.about 16 minutes C.the difference between the GHA of mean sun and the first point of Aries D.15°of arc B6.Charted depth is the ______. A.vertical distance from the chart sounding datum to the ocean bottom，plus the height of tide B.vertical distance from the chart sounding datum to the ocean bottom C.height of water over a specified period of time D.average height of all low waters at a place C7.______ are changes on charts due to changes in Hydrography, topography, construction, removal or addition of dangers to navigation etc. A.Revised edition B.New edition C.Small corrections D.Source data A8.Many navigational warnings are of a temporary nature，but othe