單項選擇題Recurvature of a hurricane’s track usually results in the forward speed().

A.increasing
B.decreasing
C.remaining the same
D.varying during the day


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1.單項選擇題Prevailing winds between 30°N and 60°N latitude are from the().

A.north
B.south
C.east
D.west

2.單項選擇題Plain language is usually used on marine weather().

A.forecasts
B.observations
C.analyses
D.reports

4.單項選擇題On a working copy of a weather map,a cold front is represented by what color line? ()

A.Red
B.Blue
C.Alternating red and blue
D.Purple

5.單項選擇題Navigational warnings and weather bulletins for shipping()from Singapore Radio.

A.broadcast
B.broadcasted
C.are broadcast
D.are broadcasted