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【单项选择题】

Mean high water is the average height of（）.

A、A.The higher high waters

B、B.The lower high waters

C、C.The lower of the two daily tides

D、D.All high waters

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更多“Mean high water is the average height of（）.”相关的问题
第1题
[单选题] The soundings on the chart are based on the depth of water available at （）.

A、mean low water  B、mean lower low water  C、mean high water  D、mean high water springs  

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第2题
[单选题] The height of a light is measured from which reference plane?（）

A、Mean low water  B、Mean high water  C、Average water level  D、Geographical sea level  

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第3题
[] The reference datum used in determining the heights of land features on most charts is（）.

A、A.mean sea level  B、B.mean high water  C、C.mean low water  D、D.half-tide level  

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第4题
[单选题] The average height of the surface of the sea for all stages of the tide over a 19 year period is called（）.

A、mean high water  B、mean low water  C、half-tide level  D、mean sea level  

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第5题
[单选题] Mean low water is the average height of（）.

A、the surface of the sea  B、high waters and low waters  C、all low waters  D、the lower of the two daily low tides  

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第6题
[] The annual change in（）is 0.2 degree．

A、A.Magnetic Variation  B、B.Marine Insurance  C、C.Maritime Accident  D、D.Mean High Water Spring  

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第7题
[] The annual change in（）is 0.2 degree.

A、A.Magnetic Variation  B、B.Marine Insurance  C、C.Maritime Accident  D、D.Mean High Water Spring  

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第8题
[单选题] The shoreline on charts generally represents the mean（）.

A、High water line  B、Low water line  C、Low water spring line  D、Tide level  

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第9题
[单选题] The meaning of ebb tide is that （）.

A、tide is falling from high water to low water  B、tide is rising from low water to high water  C、tide is reaching to a highest level  D、tide is reaching to a lowest level  

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