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
The passing of a low pressure system can be determined by periodically checking the（）.
Monsoons are characterized by（）.
MIST is caused by（）.
When a tornado moves over the water from land it is called a（）.
In the Southern Hemisphere winds in a low pressure system rotate in a（）.
The doldrums are characterized by（）.
Which of the following is not a wind（）.
Which condition suggests that your present position lies in the navigable semicircle of a tropical storm（）.
The strong wind will make us（）here for some days.
In the Northern Hemisphere，the right half of the storm is known as the dangerous semicircle because（）.