A.from the still water plane to the crest
B.from the still water plane to the trough
C.from crest to trough
D.between water levels at one-quarter of the wave's length
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A.navigable semicircle
B.dangerous semicircle
C.low pressure area
D.eye of the storm
A.position and area of the current
B.speed and direction toward which the current flows
C.type and characteristic of the current's flow
D.None of the above
A.directly from high pressure toward low pressure
B.directly from low pressure toward high pressure
C.from high pressure toward low pressure deflected by the earth's rotation
D.from low pressure toward high pressure deflected by the earth's rotation
A.equatorial current
B.humidity
C.rotation of the earth
D.change of seasons
A.from
B.on
C.in
D.of
最新試題
The direction of the surface wind is（）.
In mid-ocean，the characteristics of a wave are determined by three factors. What is NOT one of these factors?（）.
In the Northern Hemisphere you are caught in the dangerous semicircle with plenty of sea room available. The best course of action is to bring the wind on the（）.
In most cases，the direction of the apparent wind lies between the bow and（）.
Advection fog is most commonly caused by（）.
Low pressure disturbances，which travel along the intertropical convergence zone，are called（）.
Advection fog holds longest over which portions of the lakes?（）
The place where a channel moves from along one bank of the river over to the other bank of the river is called a（）.
The presence of stratus clouds and a dying wind will usually result in（）.
The direction of the southeast trade winds is a result of the（）.