单项选择题
A.in the pilothouse B.in the officer's lounge C.in the upper pumproom flat D.where they can be easily seen or readily available
The step of a pilot ladder which prevents the ladder fr...
单项选择题The step of a pilot ladder which prevents the ladder from twisting is the （）.
A.Proof bar B.Shifting bar C.Long bar D.Spreader
THE SPEED OF A VESSEL ADJUSTED TO THAT OF A PILOT BOAT ...
单项选择题THE SPEED OF A VESSEL ADJUSTED TO THAT OF A PILOT BOAT AT WHICH THE PILOT CAN SAFELY EMBARK is （）.
A.Ground speed B.Boarding speed C.Relative speed D.Speed of the vessel
The single letter G，sent by an icebreaker to an assiste...
单项选择题The single letter G，sent by an icebreaker to an assisted vessel，means （）.
A.I require a pilot B.Longitude follows C.I am going ahead; follow me D.Do not follow me
