A.period
B.range
C.distance
D.depth
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A.by
B.with
C.on
D.in
A.Northwesterly
B.Southwesterly
C.Southerly
D.Northerly
A.when the wind is against you
B.with the current setting against you
C.at slack water
D.with a cross current
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.fetch
B.distant winds
C.local storms
D.the pull of the moon
最新試題
Which statement is TRUE concerning equatorial tides（）.
（）is not a type of tide.
The velocity of the current in large coastal harbors is（）.
Which statement is TRUE concerning apogean tides（）．
The velocity of the wind，its steady direction，and the amount of time it has blown determines a wind driven current’s（）.
Neap tides occur（）.
The two most effective generating forces of surface ocean currents are（）.
You are docking a vessel．Wind and current are most favorable when they are（）.
The term flood current refers to that time when the water（）.
When there are small differences between the heights of two successive high tides or two successive low tides，the tides are called（）.