单项选择题
A.Commercial radio broadcasts B.The Coast Guard on scheduled marine information broadcasts C.VHF-FM continuous marine weather broadcasts provided by the National Weather Service D.All of the above
Weather forecast messages are usually（）.A.Given only to...
单项选择题Weather forecast messages are usually（）.
A.Given only to TV stations B.Transmitted only by commercial broadcast stations C.Broadcast in plain language D.Broadcast immediately on VHF Channel 16 and 2182 kHz
Weather conditions in the middle latitudes generally mo...
单项选择题Weather conditions in the middle latitudes generally move（）．
A.Eastward B.Westward C.Northward D.Southward
The winds you would expect to encounter in the North At...
单项选择题The winds you would expect to encounter in the North Atlantic between latitudes 5° and 30° are known as the（）.
A.Doldrums B.Westerlies C.Trades D.Easterlies
