A.Changes direction clockwise，as from north to east，etc
B.Changes direction violently and erratically
C.Remains constant in direction and speed
D.Changes direction counterclockwise，as from south to east，etc
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A.Westerlies
B.Easterlies
C.Northerlies
D.Southerlies
A.The center of the storm will by-pass you
B.The storm will strike you on the starboard side
C.You are in the direct path of the storm and should take immediate steps to batten down loose gear
D.The storm is starting to break up
A.On the starboard quarter，hold course and make as much way as possible
B.2 points on the port quarter，and make as much way as possible
C.On the port bow，and make as much way as possible
D.Dead ahead and heave to
A.West or northwest
B.Northeast
C.Southeast
D.North
A.forest fires
B.smoke from industrial areas
C.dust or sand storms
D.water droplets with the relative humidity more than 95%
A.low barometric pressure
B.high barometric pressure
C.falling barometric pressure
D.pumping barometric pressure
A.Is 50% water saturated
B.Is 90% water saturated
C.Temperature is greater than the dew point temperature
D.Temperature is equal to，or below the dew point temperature
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.westerly
B.parallel to the isobars in the warm sector
C.toward the nearest high pressure area
D.faster than the accompanying cold front
A.clearing weather
B.that a warm front has passed
C.probable thunderstorm activity
D.an approaching hurricane or typhoon
最新试题
The force resulting from the earth’s rotation that causes winds to deflect to the right in the Northern Hemisphere and to the left in the Southern Hemisphere is called（）.
When your vessel is on or near the path of an approaching tropical storm the（）.
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（）.
If you observe the point of cloud convergence shifting to the right and the “bar”of the storm appears to move along the horizon（）.
The southeast trade winds actually blow toward the（）.
In the relatively calm area near the hurricane center，the seas are（）.
Which condition suggests that your present position lies in the navigable semicircle of a tropical storm（）.
In the Northern Hemisphere，an observer at point II in the weather system should experience a wind shift from the（）.
The passing of a low pressure system can be determined by periodically checking the（）.