单项选择题
Mooring lines both （）were let go .
A. from bow to stern B. port and starboard C. fore and aft D. bow and stern
单项选择题 A ship is （）to the quayside by moorings.
单项选择题 Take the tug towing line to （）,then heave away easy.
单项选择题 Single （）aft to breast line and stern line.
