A.Effect of the moon's gravity
B.Fetch
C.Wind velocity
D.Length of time a wind has been blowing
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A.ahead of the storm center
B.in the dangerous semicircle
C.in the navigable semicircle
D.directly in the approach path of the storm
A.Alaska Current
B.Subarctic Current
C.Kuroshio Current
D.Oyashio Current
A.air being warmed above the dew point
B.saturation of cold air by rain
C.a rapid cooling of the air near the surface of the Earth at night
D.warm moist air being blown over a colder surface
A.Northwest
B.Southeast
C.Northeast
D.Southwest
A.only one high and one low water occur during a lunar day
B.the high tide is higher and the low tide is lower than usual
C.the high tide and low tide are exactly six hours apart
D.two high tides occur during a lunar day
最新試題
In modern fathometers the sonic or ultrasonic sound waves are produced electrically by means of a(n)（）.
The drift and set of tidal，river，and ocean currents refer to the（）.
A tide is called diurnal when（）.
The direction of the surface wind is（）.
The direction of the southeast trade winds is a result of the（）.
Advection fog holds longest over which portions of the lakes?（）
Cold water flowing southward through the western part of the Bering Strait between Alaska and Siberia is joined by water circulating counterclockwise in the Bering Sea to form the（）.
On the pole side of the trade wind belt，there is an area of high pressure with weak pressure gradients and light，variable winds. This area is called the（）.
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（）.
Steam fog is most likely to occur on the Mississippi and Ohio Rivers in（）.