A.wind direction remains steady
B.wind speed increases
C.barometer falls
D.All of the above
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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
A.High pressure
B.Low pressure
C.Subsurface pressure
D.Terrastatic pressure
最新試題
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（）.
Which condition suggests that your present position lies in the navigable semicircle of a tropical storm（）.
In regions near the poles，the winds are generally described as（）.
In the Northern Hemisphere，when the wind at your location is northerly，the low pressure center causing the wind is located to your（）.
The moisture equilibrium chart can be used to determine the（）.
The passing of a low pressure system can be determined by periodically checking the（）.
If you observe the point of cloud convergence shifting to the right and the “bar”of the storm appears to move along the horizon（）.
In the Northern Hemisphere a wind is said to veer when the wind（）.
The strong wind will make us（）here for some days.
Which type of precipitation is a product of the violent convection found in thunderstorms（）.