Many of the lights on this coast are placed so high as to be frequently obscured by ______．

试卷相关题目

• 1For 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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• 2The lighthouse if ______ at night may be in trouble．

  A.invisible

  B.it is invisible

  C.isn't visible

  D.unvisible

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• 3Several shoals ______ reported to exist in the area south-west of the Brothers．

  A.have

  B.have been

  C.has

  D.has been

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• 4In 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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• 5The shoreline shown on nautical charts of areas affected by large tidal fluctuations is usually the line of mean ______．

  A.lower low water

  B.low water

  C.tide level

  D.high water

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• 6During daylight savings time the meridian used for determining the time is located farther______．

  A.west in west longitude and east in east longitude

  B.east in west longitude and west in east longitude

  C.west

  D.east

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