A.Moon being at its maximum declination
B.Moon crossing the equator
C.Sun and Moon both being near 0°declination
D.Moon being at perigee
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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
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
最新試題
Which current is responsible for the movement of icebergs into the North Atlantic shipping lanes（）.
Neap tides occur only（）.
Which statement is TRUE concerning apogean tides（）．
The tide is（）.
A wave entering（）is likely to produce bores．
River currents tend to（）.
Which current would you encounter on a direct passage from London，England，to Capetown，South Africa（）.
Stand of the tide is that time when（）.
The term flood current refers to that time when the water（）.
The speed of an ocean current is dependent on（）.