海船船员
Contour elevations on this chart refer to heights in feet above mean ______.A.lower low waterB.high waterC.low waterD.sea level
题目
Contour elevations on this chart refer to heights in feet above mean ______.
A.lower low water
B.high water
C.low water
D.sea level
相似问题和答案
第1题：
The heights and soundings of Admiralty chart are expressed ______ in Fathoms ______ in Meters．
A.either，or
B.neither，nor
C.another，nor
D.other，or
第2题：
The datum from which the predicted heights of tides are reckoned in the tide tables is ______.
A.mean low water
B.the same as that used for the charts of the locality
C.the highest possible level
D.given in table three of the tide tables
第3题：
Clearances of bridges and overhead cables below Bonneville Dam refer to heights in feet above mean ______.
A.lower low water
B.high water
C.low water
D.sea level
第4题：
Normal pool elevation is the height in feet of the section of river above a dam. This height is measured from ______.
A.low steel on the Huey P. Long Bridge
B.mean sea level
C.the local water table
D.the minimum dam control level
第5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
第6题：
EXCEPT when suffering from a head or chest injury a patient in shock should be placed in which position? ______.
A.Head up and feet down
B.Head down and feet up
C.Flat on back with head and feet elevated
D.Arms above the head
第7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
第8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
第9题：
The reference datum used in determining the heights of land features on most charts is ______.
A.mean sea level
B.mean high water
C.mean low water
D.half-tide level
第10题：
Chart 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.average height of water over a specified period of time
D.average height of all low waters at a place
海图标注水深是自海图图深基准面到海底的垂直距离。