A.SEMIDIURNAL
B.DIURNAL
C.MIXED
D.OSCILLATING
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A.slack water when upbound
B.shallow water
C.a cross current
D.a head current
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
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
最新試題
River currents tend to（）.
You are docking a vessel．Wind and current are most favorable when they are（）.
Neap tides occur only（）.
Neap tides occur when the（）.
The set of the current is the（）.
The tide（）.It’s 2 hours before low water，and（）your present position you will be aground at low water.
Which statement is TRUE concerning equatorial tides（）.
Which current would you encounter on a direct passage from London，England，to Capetown，South Africa（）.
The type of current which will have the greatest effect on the course made good for your vessel is（）.
Stand of the tide is that time when（）.