A.Diurna
B.Semi-diurnal
C.Solar
D.Mixed
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A.Add one hour to the times listed under the reference stations
B.Subtract one hour from the time differences listed for the subordinate stations
C.Apply no correction as the times in the reference stations are adjusted for daylight savings time
D.Add 15° to the standard meridian when calculating the time difference
A.freshets
B.floods
C.river flows
D.seismic events
A.speed of the current at a particular time
B.maximum speed of the current
C.direction from which the current flows
D.direction in which the current flows
A.SW'ly direction along the NW coast of Africa
B.S'ly direction off the East Coast of Australia
C.NW'ly direction along the SW coast of Africa
D.SW'ly direction along the SE coast of Greenland
A.the vertical rise or fall of the tide has stopped
B.slack water occurs
C.tidal current is at a maximum
D.the actual depth of the water equals the charted depth
最新試題
Which statement is TRUE concerning equatorial tides().
The velocity of a rotary tidal current will be decreased when the Moon is().
Spring tides are tides that().
The speed of an ocean current is dependent on().
The velocity of the current in large coastal harbors is().
The Benguela Current flows in a().
Which statement is TRUE concerning apogean tides().
The tide().It’s 2 hours before low water,and()your present position you will be aground at low water.
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().