A.shallow water
B.deep water
C.river
D.tide
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A.SEMIDIURNAL
B.DIURNAL
C.MIXED
D.OSCILLATING
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
最新試題
Priming of the tides occurs().
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?()
When daylight savings time is kept,the time of tide and current calculations must be adjusted.One way of doing this is to().
Which statement is TRUE concerning apogean tides().
Tropic tides are caused by the().
The velocity of a rotary tidal current will be decreased when the Moon is().
The Benguela Current flows in a().
The steady current circling the globe at about 60°S is the().
The speed of an ocean current is dependent on().
When there are small differences between the heights of two successive high tides or two successive low tides,the tides are called().