單項(xiàng)選擇題A message warning of a tropical storm should be sent as a(n)（）.

A.routine message
B.urgent message
C.distress message
D.safety message


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1.單項(xiàng)選擇題A crew member has just fallen overboard off your port side. Which action should you take?（）.

A.Immediately put the rudder over hard right
B.Immediately put the rudder over hard left
C.Immediately put the engines astern
D.Wait until the stern is well clear of the man and then put the rudder over hard right

2.單項(xiàng)選擇題（）of the following messages is allowed to be transmitted on the radiotelephone without the authority of the Master.

A.Urgency signal
B.Safety signal
C.Distress signal
D.None of the above