A.High pressure area
B.Extratropical low-pressure system
C.Tropical storm
D.Easterly wave
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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
A.Stratocumulus clouds or strange birds
B.Rain and increasing winds
C.An exceptionally long swell
D.Dark clouds and the“bar”of the storm
A.Hill of low pressure
B.Trough of low pressure
C.Valley of low pressure
D.Ridge of low pressure
最新試題
The strong wind will make us（）here for some days.
When your vessel is on or near the path of an approaching tropical storm the（）.
Your facsimile prognostic chart indicates that you will cross the cold front of a low pressure system in about 24 hours.You should（）.
Which condition suggests that your present position lies in the navigable semicircle of a tropical storm（）.
In the Northern Hemisphere，if your vessel is in a hurricane’s navigable semicircle it should be positioned with the wind on 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（）.
Which condition indicates that you are in a hurricane’s dangerous semicircle in the Northern hemisphere（）.
Monsoons are characterized by（）.
The passing of a low pressure system can be determined by periodically checking the（）.