A.Steady，light to moderate winds
B.Frequent calms
C.Clear skies
D.Low humidity
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A.Magnetic field at the North Pole
B.Gulf Stream
C.Earth's rotation
D.Arctic cold fronts
A.Coming cold weather conditions
B.A warm front weather condition
C.High pressure conditions
D.Scattered cumulus cloudsduring the day
A.light，variable winds with little or no humidity
B.strong，gusty winds that blow from the same general direction all year
C.steady winds that reverse direction semiannually
D.strong，cyclonic winds that change direction to conform to the passage of an extreme low pressure system
A.forest fires
B.smoke from industrial areas
C.dust or sand storms
D.water droplets with the relative humidity more than 95%
A.clockwise direction
B.northeasterly direction
C.northerly direction
D.counterclockwise direction
最新試題
MIST is caused by（）.
In the relatively calm area near the hurricane center，the seas are（）.
Which type of precipitation is a product of the violent convection found in thunderstorms（）.
In the Northern Hemisphere，the right half of the storm is known as the dangerous semicircle because（）.
What kind of pressure systems travel in easterly waves（）.
Steady precipitation is typical of（）．
Which of the following is not a wind（）.
The doldrums are characterized by（）.
Your facsimile prognostic chart indicates that you will cross the cold front of a low pressure system in about 24 hours.You should（）.
What kind of conditions would you observe as the eye of a storm passes over your ship’s position（）.