单项选择题
Moving of an anchor over the sea bottom to control the movement of the vessel defines（）.
A.dredging ( of anchor )
B.dragging ( of anchor )
C.weighing anchor
D.walking out anchor
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单项选择题
Pan-Pan is to be used to announce（）.
A.a distress message
B.an urgency message
C.a safety message
D.a message of SMCP -
单项选择题
Pan-Pan repeated three times over the radiotelephone indicates which type of message will follow?（）
A.distress
B.safety
C.all clear
D.urgency -
单项选择题
Place on deck, in mess rooms,etc.,assigned to crew and passengers, where they have to meet according to the muster list when the corresponding alarm is released or announcement made means（）.
A.deck area
B.dining room on board
C.assembly station
D.hold
