A.January
B.April
C.August
D.October
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A.Effect of the moon's gravity
B.Fetch
C.Wind velocity
D.Length of time a wind has been blowing
A.adverse currents for practically the entire crossing
B.favorable currents for practically the entire crossing
C.favorable currents in the summer months and adverse currents in the winter months
D.variable currents having no significant effect on the total steaming time
A.vary
B.variable
C.variably
D.variability
A.vertical movement of the water
B.horizontal movement of the water
C.density changes in the water
D.None of the above
A.dike
B.revetment
C.cutoff
D.crib
最新試題
The term flood current refers to that time when the water（）.
The tide（）.It’s 2 hours before low water，and（）your present position you will be aground at low water.
Which current is responsible for the movement of icebergs into the North Atlantic shipping lanes（）.
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?（）
You are docking a vessel．Wind and current are most favorable when they are（）.
Which current would you encounter on a direct passage from southern Africa to Argentina，South America（）.
The winds with the greatest effect on the set，drift，and depth of the equatorial currents are the（）.
The tide is（）.
A wave entering（）is likely to produce bores．
Which current would you encounter on a direct passage from London，England，to Capetown，South Africa（）.