A.vary
B.variable
C.variably
D.variability
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A.vertical movement of the water
B.horizontal movement of the water
C.density changes in the water
D.None of the above
A.dike
B.revetment
C.cutoff
D.crib
A.directional current
B.forward current
C.propeller current
D.wake current
最新試題
Which current would you encounter on a direct passage from London，England，to Capetown，South Africa（）.
Which current is responsible for the movement of icebergs into the North Atlantic shipping lanes（）.
The winds with the greatest effect on the set，drift，and depth of the equatorial currents are the（）.
You are docking a vessel．Wind and current are most favorable when they are（）.
The speed of an ocean current is dependent on（）.
（）is not a type of tide.
Water may boil up around the stern of a vessel in a channel due to（）.
The Benguela Current flows in a（）.
The velocity of the current in large coastal harbors is（）.
The tide（）.It’s 2 hours before low water，and（）your present position you will be aground at low water.