A.One hour after the predicted time
B.At the predicted time
C.30 minutes before flood，one hour after an ebb
D.30 minutes before the predicted time
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A.getting
B.setting
C.being
D.having
A.doldrums
B.horse latitudes
C.trade winds
D.prevailing westerlies
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
最新試題
The Benguela Current flows in a（）.
The set of the current is the（）.
Which statement is TRUE concerning equatorial tides（）.
A wave entering（）is likely to produce bores．
The tide is（）.
When daylight savings time is kept，the time of tide and current calculations must be adjusted.One way of doing this is to（）.
The winds with the greatest effect on the set，drift，and depth of the equatorial currents are the（）.
The steady current circling the globe at about 60°S is the（）.
To make sure of getting the full advantage of a favorable current，you should reach an entrance or strait at what time in relation to the predicted time of the favorable current?（）
The type of current which will have the greatest effect on the course made good for your vessel is（）.