單項選擇題A vessel showing a yellow light over a white light at night is a vessel（）.

A.engaged in piloting
B.towing astern
C.engaged in fishing
D.in distress


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1.單項選擇題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

2.單項選擇題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

3.單項選擇題（）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

5.單項選擇題You hear on the radiotelephone the word SECURITE spoken three times. This indicates that（）.

A.a message about the safety of navigation will follow
B.a message of an urgent nature about the safety of a ship will follow
C.the sender is in distress and requests immediate assistance
D.you should secure your radiotelephone