A.Upwind
B.Downwind
C.Crosswind
D.Downcurrent
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A.short confused swells
B.gradually increasing white clouds (mare's tails)
C.pumping barometer
D.continuous fine mist-like rain
A.ice crystals
B.water droplets
C.snow crystals
D.nitrogen
A.elevation
B.temperature
C.wind speed
D.latitude
A.apparent wind speed only
B.true wind speed and true wind direction
C.true wind speed only
D.apparent wind speed and true wind direction
A.high clouds
B.middle clouds
C.low clouds
D.vertical development clouds
最新試題
Two well-developed high pressure areas may be separated by a（）.
In the Northern Hemisphere a wind is said to veer when the wind（）.
In the Northern Hemisphere，an observer at point II in the weather system should experience a wind shift from 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，if your vessel is in a hurricane’s navigable semicircle it should be positioned with the wind on the（）.
What is the first visible indication of the presence of a tropical cyclone or hurricane（）.
The southeast trade winds actually blow toward the（）.
Which of the following is not a wind（）.
The passing of a low pressure system can be determined by periodically checking the（）.