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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
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更多 “ Contour elevations on this chart refer to heights in feet above mean ______.A.lower low waterB.high waterC.low waterD.sea level ” 相关考题
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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 waterB.mean low waterC.half-tide levelD.mean sea level
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The reference datum used in determining the heights of land features on most charts is ______.A.mean sea levelB.mean high waterC.mean low waterD.half-tide level
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Chart depth is the ______.A.vertical distance from the chart sounding datum to the ocean bottom, plus the height of tideB.vertical distance from the chart sounding datum to the ocean bottomC.average height of water over a specified period of timeD.average height of all low waters at a place
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What does the term computer language refer to?（）A、BinaryB、DecimalC、HexadecimalD、OctalE、All of the above
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单选题The reference datum used in determining the heights of land features on most charts is（）.A
mean sea levelB
mean high waterC
mean low waterD
half-tide level
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单选题The heights and soundings of Admiralty chart are expressed（）in Fathoms（）in Meters．A
either，orB
neither，norC
another，norD
other，or
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单选题EXCEPT when suffering from a head or chest injury a patient in shock should be placed in which position?（）.A
Head up and feet downB
Head down and feet upC
Flat on back with head and feet elevatedD
Arms above the head
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单选题When there are small differences between the heights of two successive high tides or two successive low tides，the tides are called（）.A
DiurnaB
Semi-diurnalC
SolarD
Mixed
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单选题Contour elevations on this chart refer to heights in feet above mean （）.A
lower low waterB
high waterC
low waterD
sea level
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单选题Clearances of bridges and overhead cables below Bonneville Dam refer to heights in feet above mean （）.A
lower low waterB
high waterC
low waterD
sea level
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单选题A patient in shock should NOT be placed in which position? （）A
On their side if unconsciousB
Head down and feet up，no injuries to face or headC
Flat on their back with head and feet at the same levelD
Arms above their head
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单选题The difference between the heights of low and high tide is the（）.A
periodB
rangeC
distanceD
depth
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单选题The soundings on the chart are based on the depth of water available at （）.A
mean low waterB
mean lower low waterC
mean high waterD
mean high water springs
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单选题What does the term computer language refer to?（）A
BinaryB
DecimalC
HexadecimalD
OctalE
All of the above
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单选题The description Racon beside an illustration on a chart would mean a（）.A
radar transponder beaconB
radar conspicuous beaconC
radar calibration beaconD
circular radiobeacon
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单选题Mean low water is the average height of（）.A
the surface of the seaB
high waters and low watersC
all low watersD
the lower of the two daily low tides
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单选题The datum from which the predicted heights of tides are reckoned in the tide tables is（）.A
mean low waterB
the same as that used for the charts of the localityC
the highest possible levelD
given in table three of the tide tables
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单选题You are passing the Bayou Sara gage which reads 3.9 feet. Which of the following statements is TRUE?（）A
The river level is above the Low Water Reference PlaneB
Red Store Landing Revetment is ahead on your starboard sideC
This gage reading is at a lower elevation than the same reading on the gage at Head of PassesD
None of the above
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