单项选择题

The AMVER system requires（）.

A.Sailing plans to be sent before departure
B.More frequent reports in heavy weather
C.Arrival reports to be sent within 8 hours of arrival
D.A position report within 24 hours of departure

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热门试题

单项选择题

Of the following，（）is not a wind.

A.Bora
B.Gust
C.Gregale
D.Floe

单项选择题

If the center of low pressure is due west of you in the Northern Hemisphere，which wind direction should you expect（）.

A.South to west
B.South to east
C.West to north
D.North to east