A.crossing
B.transit
C.transfer
D.passing
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A.V-shaped ripple with the point of the V pointing upstream
B.V-shaped ripple with the point of the V pointing downstream
C.small patch of smooth water on a windy day
D.smoothing out of the vessel's wake
A.chute
B.stabilized channel
C.slough
D.navigable pass
A.3 hours
B.6 1/2 hours
C.12 1/2 hours
D.25 hours
A.dew
B.frost
C.glaze
D.snow
A.high density will be on the left in the Northern Hemisphere
B.high density will be on the right in the Southern Hemisphere
C.low density will be on the left in the Northern Hemisphere
D.low density will be on the left in the Southern Hemisphere
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The direction of the surface wind is（）.
In the Northern Hemisphere you are caught in the dangerous semicircle with plenty of sea room available. The best course of action is to bring the wind on the（）.
Low pressure disturbances，which travel along the intertropical convergence zone，are called（）.
The horse latitudes are characterized by（）.
The currents are（）mosoonal origin．
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（）.
A swift current occurring in a narrow passage connecting two large bodies of water which is produced by the continuously changing difference in height of tide at the two ends of the passage is called a(n)（）.
The drift and set of tidal，river，and ocean currents refer to the（）.
In some parts of the world there is often a slight fall in tide during the middle of the high water period. The effect is to create a longer period of stand at higher water. This special feature is called a(n)（）.
In mid-ocean，the characteristics of a wave are determined by three factors. What is NOT one of these factors?（）.