网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
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
参考答案
更多 “ 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 ” 相关考题
考题
According to the passage, which is true about the ocean?A. The waters of the ocean came from rain water.B. The ocean was formed from the, lighter rock materials.C. The vast single ocean formed about 200 million years ago.D. The ocean covered the whole surface of the earth at very beginning.
考题
What keeps Grimsvotn still?A．The slow flow of waterB．The low water temperatureC．The thick glacierD．The water pressure
考题
____ is covered with heavy snow.
A.The earth's surfaceB.The surface of earthC.The surface earthD.The earth surface
考题
The distance between the surface of the water and the tidal datum is the______．A.height of tideB.charted depthC.actual water depthD.range of tide
考题
Clearance gauges at bridges indicate ______.A.the height of the tideB.depth of water under the bridgeC.charted vertical clearance at mean low waterD.distance from the water to low steel of the bridge
考题
The height of a light is measured from which reference plane?A.Mean low waterB.Mean high waterC.Average water levelD.Geographical sea level
考题
The height of tide is the ______.A.depth of water at a specific time due to tidal effectB.difference between the depth of the water and the area's tidal datumC.difference between the depth of the water and the high water tidal levelD.difference between the depth of the water at high tide and the depth of the water at low tide
考题
The period at high or low tide during which there is no change in the height of the water is called the ______.A.range of the tideB.plane of the tideC.stand of the tideD.reversing of the tide
考题
Charted 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
考题
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
考题
Charted depth is the ______.A.vertical distance from the tidal datum to the ocean bottom plus the height of the tideB.vertical distance from the tidal datum to the ocean bottomC.average height of water over a specified period of timeD.average height of all low waters at a place
考题
The abbreviation L.W.R.P. on the navigation maps means ______.A.low water reference planeB.low winter runoff pointC.least water river planeD.land wall reference point
考题
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 waterB.mean low waterC.half-tide levelD.mean sea level
考题
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 BridgeB.mean sea levelC.the local water tableD.the minimum dam control level
考题
Mean high water is the average height of ______.A.the higher high watersB.the lower high watersC.the lower of the two daily tidesD.all high waters
考题
What does the writer mean by saying“it is a maxim more often repeated than observed”in Line 3 to 4，Paragraph 1？( ) A.The maxim functions well in all cases
B.The maxim does not function at all
C.The maxim functions more at surface value
D.The maxim does not work much in reality
考题
单选题The height of a light is measured from which reference plane?（）A
Mean low waterB
Mean high waterC
Average water levelD
Geographical sea level
考题
问答题If a is an integer, is b an integer? (1) The average (arithmetic mean) of a and b is an integer. (2) The average (arithmetic mean) of a, b, and b+4 is a.
考题
单选题The height of tide is the （）.A
depth of water at a specific time due to tidal effectB
difference between the depth of the water and the area's tidal datumC
difference between the depth of the water and the high water tidal levelD
difference between the depth of the water at high tide and the depth of the water at low tide
考题
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 waterB
mean low waterC
half-tide levelD
mean sea level
考题
单选题Clearance gauges at bridges indicate （）.A
the height of the tideB
depth of water under the bridgeC
charted vertical clearance at mean low waterD
distance from the water to low steel of the bridge
考题
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
考题
单选题One of the causes of ocean currents is density differences in the water. This is true because （）.A
in an area of high density the water's surface is lower than in an area of low densityB
surface water flows from an area of high density to one of low densityC
the lesser the density gradient the freer the water is to moveD
it is the density differences that cause the currents to stay in the troughs
考题
单选题The period at high or low tide during which there is no change in the height of the water is called the （）.A
range of the tideB
plane of the tideC
stand of the tideD
reversing of the tide
考题
单选题Charted depth is the（）.A
vertical distance from the tidal datum to the ocean bottom plus the height of the tideB
vertical distance from the tidal datum to the ocean bottomC
average height of water over a specified period of timeD
average height of all low waters at a place
考题
单选题Charted 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
考题
单选题Mean high water is the average height of（）.A
The higher high watersB
The lower high watersC
The lower of the two daily tidesD
All high waters
热门标签
最新试卷
