A.north
B.east
C.southwest
D.northwest
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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.east
B.northeast
C.southwest
D.west
A.velocity of current in knots
B.direction from which the current flows
C.estimated current
D.direction toward which the current flows
A.reversing current
B.ebb current
C.flood current
D.slack current
A.harmonic constant
B.establishment of the port
C.half-tide level
D.tide cycle
最新試題
Tropic tides are caused by the（）.
You are anchoring in a river where the current is from one direction only.The best way to lay out two anchors is to have them（）.
The winds with the greatest effect on the set，drift，and depth of the equatorial currents are the（）.
Stand of the tide is that time when（）.
The velocity of a rotary tidal current will be decreased when the Moon is（）.
Which current would you encounter on a direct passage from southern Africa to Argentina，South America（）.
Tide is（）in direction ENE.
Spring tides are tides that（）.
You are docking a vessel．Wind and current are most favorable when they are（）.
Neap tides occur only（）.