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
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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
A.Huge waves approaching from all directions，clearing skies，light winds，and an extremely low barometer
B.Flat calm seas，heavy rain，light winds，and an extremely low barometer
C.Flat calm seas，heavy rain，light winds，and high pressure
D.Huge waves approaching from all directions，clearing skies，light winds，and high pressure
最新試題
In the Northern Hemisphere，an observer at point II in the weather system should experience a wind shift from the（）.
Which type of precipitation is a product of the violent convection found in thunderstorms（）.
When your vessel is on or near the path of an approaching tropical storm the（）.
When a tornado moves over the water from land it is called a（）.
When experiencing heavy winds，you should reef sails to（）.
In regions near the poles，the winds are generally described as（）.
In the Northern Hemisphere，the right half of the storm is known as the dangerous semicircle because（）.
Which condition indicates that you are in a hurricane’s dangerous semicircle in the Northern hemisphere（）.
Monsoons are characterized by（）.
The southeast trade winds actually blow toward the（）.