A.predicted in Tidal Current Tables
B.unpredictable
C.generally constant
D.generally too weak to be of concern
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A.at apogee
B.new
C.full
D.All of the above
A.one flowing in the same direction as your course steered
B.one flowing in the opposite direction as your course steered
C.one that flows at nearly right angles to your course steered
D.a rotary current in which the direction of current flow constantly changes
A.temperature and salinity differences in the water
B.wind and density differences in the water
C.water depth and underwater topography
D.rotation of the Earth and continental interference
A.black
B.setting
C.being
D.having
A.falls／in
B.has been falling／on
C.has fallen／at
D.is falling／in
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Stand of the tide is that time when（）.
The term flood current refers to that time when the water（）.
When daylight savings time is kept，the time of tide and current calculations must be adjusted.One way of doing this is to（）.
You are docking a vessel．Wind and current are most favorable when they are（）.
Neap tides occur when the（）.
The speed of an ocean current is dependent on（）.
A wave entering（）is likely to produce bores．
Neap tides occur only（）.
When there are small differences between the heights of two successive high tides or two successive low tides，the tides are called（）.
The winds with the greatest effect on the set，drift，and depth of the equatorial currents are the（）.