A.low barometric pressure
B.high barometric pressure
C.falling barometric pressure
D.pumping barometric pressure
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A.high pressures
B.low pressures
C.weak pressures
D.strong pressures
A.check it with a barometer on another vessel
B.take readings from several barometers and average them
C.check it with the barometer at the ship chandlery
D.check it against radio or National Weather Service reports of the immediate vicinity
A.a certain area
B.all ocean areas
C.some areas
D.important areas
A.distance a wave travels between formation and decay
B.stretch of water over which a wave-forming wind blows
C.time in seconds required for two crests to pass a given point
D.measurement of a wave's steepness
A.Upwind
B.Downwind
C.Crosswind
D.Downcurrent
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In the relatively calm area near the hurricane center，the seas are（）.
Two well-developed high pressure areas may be separated by a（）.
The doldrums are characterized by（）.
When a hurricane passes into high latitudes over colder water and the source of heat is disrupted，the storm assumes the characteristics of（）.
Which of the following is not a wind（）.
Which condition indicates that you are in a hurricane’s dangerous semicircle in the Northern hemisphere（）.
In regions near the poles，the winds are generally described as（）.
In the Northern Hemisphere a wind is said to veer when the wind（）.
Steady precipitation is typical of（）．
You have determined that you are in the right semicircle of a tropical cyclone in the Northern Hemisphere.What action should you take to avoid the storm（）.