Contour elevations on this chart refer to heights in feet above mean ______.A.lower low waterB.high waterC.low waterD.sea level
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
相关考题：
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
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
The heights and soundings of Admiralty chart are expressed ______ in Fathoms ______ in Meters．A.either，orB.neither，norC.another，norD.other，or
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
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
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
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
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
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 BridgeB.mean sea levelC.the local water tableD.the minimum dam control level
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
In what units are heights and soundings in the chart? They are in ______.A.meters and fathomsB.fathoms and metersC.meter and fathomD.fathom and meter
What does the term computer language refer to?（）A、BinaryB、DecimalC、HexadecimalD、OctalE、All of the above
单选题The reference datum used in determining the heights of land features on most charts is（）.Amean sea levelBmean high waterCmean low waterDhalf-tide level
单选题The heights and soundings of Admiralty chart are expressed（）in Fathoms（）in Meters．Aeither，orBneither，norCanother，norDother，or
单选题EXCEPT when suffering from a head or chest injury a patient in shock should be placed in which position?（）.AHead up and feet downBHead down and feet upCFlat on back with head and feet elevatedDArms above the head
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（）.ADiurnaBSemi-diurnalCSolarDMixed
单选题Contour elevations on this chart refer to heights in feet above mean （）.Alower low waterBhigh waterClow waterDsea level
单选题Clearances of bridges and overhead cables below Bonneville Dam refer to heights in feet above mean （）.Alower low waterBhigh waterClow waterDsea level
单选题A patient in shock should NOT be placed in which position? （）AOn their side if unconsciousBHead down and feet up，no injuries to face or headCFlat on their back with head and feet at the same levelDArms above their head
单选题The difference between the heights of low and high tide is the（）.AperiodBrangeCdistanceDdepth
单选题The soundings on the chart are based on the depth of water available at （）.Amean low waterBmean lower low waterCmean high waterDmean high water springs
单选题What does the term computer language refer to?（）ABinaryBDecimalCHexadecimalDOctalEAll of the above
单选题The description Racon beside an illustration on a chart would mean a（）.Aradar transponder beaconBradar conspicuous beaconCradar calibration beaconDcircular radiobeacon
单选题Mean low water is the average height of（）.Athe surface of the seaBhigh waters and low watersCall low watersDthe lower of the two daily low tides
单选题The datum from which the predicted heights of tides are reckoned in the tide tables is（）.Amean low waterBthe same as that used for the charts of the localityCthe highest possible levelDgiven in table three of the tide tables
单选题You are passing the Bayou Sara gage which reads 3.9 feet. Which of the following statements is TRUE?（）AThe river level is above the Low Water Reference PlaneBRed Store Landing Revetment is ahead on your starboard sideCThis gage reading is at a lower elevation than the same reading on the gage at Head of PassesDNone of the above