單項選擇題

Who can suggest changes to the SMS?（）

A.The designated person
B.The captain
C.All officers and crew
D.All senior officer

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單項選擇題

Which statement is TRUE when comparing cold and warm fronts?（）

A.Cold fronts are more violent and of shorter duration
B.Cold fronts are milder and last longer
C.They are very similar with the exception of wind direction
D.Warm fronts are more violent and of longer duration

單項選擇題

The principal purpose of adjustment of the magnetic compass is to eliminate（）as far as possible.

A.variation
B.compass error
C.deviation
D.earth‟s magnetic force

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