A.equatorial current
B.humidity
C.rotation of the earth
D.change of seasons
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A.from
B.on
C.in
D.of
A.North Cape Current
B.Labrador Current
C.Greenland Current
D.North Atlantic Current
A.must be from dead ahead
B.speed must be zero
C.must be from dead astern
D.must be on the beam
A.ahead and equal to the ship's speed
B.astern and equal to the ship's speed
C.ahead and equal to twice the ship's speed
D.astern and equal to twice the ship's speed
A.spring，around late evening
B.spring，around early evening
C.fall，around early morning
D.fall，around midday
最新試題
In the Northern Hemisphere the major ocean currents tend to flow（）.
The height of a wave is the vertical distance（）.
In mid-ocean，the characteristics of a wave are determined by three factors. What is NOT one of these factors?（）.
In most cases，the direction of the apparent wind lies between the bow and（）.
The ocean bottom that extends from the shoreline out to an area where there is a marked change in slope to a greater depth is the（）.
Advection fog is most commonly caused by（）.
The direction of the southeast trade winds is a result of the（）.
Radiation fog（）.
In a tropical cyclone，in the Northern Hemisphere，a vessel hove to with the wind shifting counterclockwise is（）.
In shallow water，waves that are too steep to be stable，causing the crests to move forward faster than the rest of the wave，are called（）.