A.draft
B.cutoff
C.draw
D.crossing
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A.abyssal plain
B.continental shelf
C.borderland
D.offshore terrace
A.of the wave's crest
B.of the wave's trough
C.measured from crest to trough
D.measured from crest to crest
A.at right angles to the flow of the current
B.against the flow of the current
C.in the same direction as the flow of the current
D.over slack water
A.weak pressure gradients and light，variable winds
B.the formation of typhoons or hurricanes in certain seasons
C.steady winds in one direction for six months followed by wind reversal for the next six months
D.steady winds generally from the southeast in the Southern Hemisphere
A.from the still water plane to the crest
B.from the still water plane to the trough
C.from crest to trough
D.between water levels at one-quarter of the wave's length
最新試題
Advection fog is most commonly caused by（）.
The largest waves (heaviest chop) will usually develop where the wind blows（）.
The drift and set of tidal，river，and ocean currents refer to the（）.
On the pole side of the trade wind belt，there is an area of high pressure with weak pressure gradients and light，variable winds. This area is called the（）.
A tide is called diurnal when（）.
The edge of a hurricane has overtaken your vessel in the Gulf of Mexico，and the northwest wind of a few hours ago has shifted to the west. This is an indication that you are located in the（）.
Steam fog is most likely to occur on the Mississippi and Ohio Rivers in（）.
The apparent wind can be zero when the true wind is from（）.
The direction of the surface wind is（）.
In the Northern Hemisphere，your vessel is believed to be in the direct path of a hurricane，and plenty of sea room is available. The best course of action is to bring the wind on the（）.