A.doldrums
B.horse latitudes
C.trade winds
D.prevailing westerlies
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A.temperature
B.density
C.deflection
D.speed
A.predicted in Tidal Current Tables
B.unpredictable
C.generally constant
D.generally too weak to be of concern
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
最新試題
Which statement is TRUE concerning equatorial tides（）.
The steady current circling the globe at about 60°S is the（）.
The type of current which will have the greatest effect on the course made good for your vessel is（）.
When there are small differences between the heights of two successive high tides or two successive low tides，the tides are called（）.
Which current would you encounter on a direct passage from London，England，to Capetown，South Africa（）.
The tide（）.It’s 2 hours before low water，and（）your present position you will be aground at low water.
The winds with the greatest effect on the set，drift，and depth of the equatorial currents are the（）.
Tide is（）in direction ENE.
Stand of the tide is that time when（）.
Neap tides occur only（）.