单项选择题

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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单项选择题

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

单项选择题

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

单项选择题

You are standing the wheelwatch on entering port and the master gives you a rudder command which conflicts with a rudder command from the pilot.What should you do?（）

A.obey the master‟s
B.obey the pilot‟s
C.bring the rudder to a position midway between the two conflicting orders
D.ask the pilot if he relinquishes control