On a chart，the characteristic of the light on a lighthouse is shown as flashing white with a red sector. The red sector ______.

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• 1On small scale charts of ocean areas where hydrographic information is，in many cases，still ______ ，charted shoals may be in error as regards position，depth and extent．

  A.spare

  B.spade

  C.sparse

  D.spear

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• 2In revised editions of Admiralty charts the ______ are corrected first．

  A.smaller scales

  B.larger scales

  C.smaller scales and larger scales

  D.moderate scales

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• 3The Admiralty Notices to Mariners can be obtained ______ by Masters of vessels from any Admiralty Chart Agent．

  A.free of charge

  B.with no responsibility

  C.without limitations of distribution

  D.with little charges

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• 4In Beaufort Scale，the wind force 7 with speed of 28-33 knots is defined as ______ .

  A.Moderate gale

  B.Near gale

  C.Strong gale

  D.Whole gale

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• 5When warm moist air is blown over a colder surface, ______ will happen.

  A.advection fog

  B.radiation fog

  C.dense fog

  D.steam fog

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• 6Which statement is TRUE of a stiff vessel、

  A.She will have an unusually high center of gravity

  B.She will have a large metacentric height

  C.She will pitch heavily

  D.Her period of roll will be large due to her large metacentric height

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• 7For details of these and other lights the larger scale charts and Admiralty Lists should be ______ .

  A.considered

  B.consulted

  C.concluded

  D.commanded

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• 8Coast Pilots and navigational charts are kept corrected and up-to-date by using the ______.

  A.pilot charts

  B.Notices to Mariners

  C.Tide Tables

  D.Current Tables

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• 9The issue of Notices to Mariners of charts and these aids(Radar beacons)may be delayed until such time as they are assessed to be ______．

  A.temporary

  B.permanent

  C.occasional

  D.steady

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• 10In which voyage，between two points，is the rhumb line distance NOT approximately the same as the great circle distance、 ______.

  A.The two points are in low latitudes in the same hemisphere

  B.The two points are in high latitudes in the same hemisphere

  C.The two points are near the equator，but in different hemispheres

  D.One point is near the equator，one point is in a high latitude，and both are near the 180th meridian

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