单项选择题
A.draft B.cutoff C.draw D.crossing
The ocean bottom that extends from the shoreline out to...
单项选择题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.abyssal plain B.continental shelf C.borderland D.offshore terrace
The length of a wave is the length（）.A.of the waves cre...
单项选择题The length of a wave is the length（）.
A.of the wave's crest B.of the wave's trough C.measured from crest to trough D.measured from crest to crest
The largest waves (heaviest chop) will usually develop ...
单项选择题The largest waves (heaviest chop) will usually develop where the wind blows（）.
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
