A.A backing wind
B.A veering wind
C.A norther
D.A strong，gusty wind
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A.wind direction remains steady
B.wind speed increases
C.barometer falls
D.All of the above
A.bring the sails parallel to the wind
B.reduce sail area exposed to the wind
C.allow the sails to catch more wind
D.remove all tension on the main and jib sheets
A.Tornado
B.Waterspout
C.Hurricane
D.Cyclone
A.High pressure area
B.Extratropical low-pressure system
C.Tropical storm
D.Easterly wave
A.a high pressure area
B.an extratropical cyclone
C.a tropical storm
D.an easterly wave
最新試題
What kind of conditions would you observe as the eye of a storm passes over your ship’s position（）.
The doldrums are characterized by（）.
Steady precipitation is typical of（）．
What kind of pressure systems travel in easterly waves（）.
In the Northern Hemisphere，when the wind at your location is northerly，the low pressure center causing the wind is located to your（）.
Which type of precipitation is a product of the violent convection found in thunderstorms（）.
In the Northern Hemisphere，an observer at point II in the weather system should experience a wind shift from the（）.
Which condition suggests that your present position lies in the navigable semicircle of a tropical storm（）.
Your facsimile prognostic chart indicates that you will cross the cold front of a low pressure system in about 24 hours.You should（）.
Tropical cyclones are classified by form and intensity.Which system does not have closed isobars（）.