单项选择题
The transfer procedures for oil products are required to be posted （）.
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
单项选择题 The step of a pilot ladder which prevents the ladder from twisting is the （）.
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 （）.
单项选择题 The single letter G，sent by an icebreaker to an assisted vessel，means （）.
