A.high pressures
B.low pressures
C.weak pressures
D.strong pressures
您可能感興趣的試卷
你可能感興趣的試題
A.check it with a barometer on another vessel
B.take readings from several barometers and average them
C.check it with the barometer at the ship chandlery
D.check it against radio or National Weather Service reports of the immediate vicinity
A.a certain area
B.all ocean areas
C.some areas
D.important areas
A.distance a wave travels between formation and decay
B.stretch of water over which a wave-forming wind blows
C.time in seconds required for two crests to pass a given point
D.measurement of a wave's steepness
A.Upwind
B.Downwind
C.Crosswind
D.Downcurrent
A.short confused swells
B.gradually increasing white clouds (mare's tails)
C.pumping barometer
D.continuous fine mist-like rain
最新試題
The direction of prevailing winds in the Northern hemisphere is caused by the（）.
What kind of pressure systems travel in easterly waves（）.
In the Northern Hemisphere，if your vessel is in a hurricane’s navigable semicircle it should be positioned with the wind on the（）.
When a tornado moves over the water from land it is called a（）.
Which condition suggests that your present position lies in the navigable semicircle of a tropical storm（）.
The passing of a low pressure system can be determined by periodically checking the（）.
Which condition indicates that you are in a hurricane’s dangerous semicircle in the Northern hemisphere（）.
When your vessel is on or near the path of an approaching tropical storm the（）.
Monsoons are characterized by（）.
What is the first visible indication of the presence of a tropical cyclone or hurricane（）.