单项选择题
Prior to a ship’s departure from any port （） should be tested with deck officer to ensure satisfactory operation.
A.fire fighting pump B.the steering gear C.life boat engine D.the main engine
单项选择题 The（）is a series of trials done at sea to determine whether the ship has met the specifications of design, modification, or repair.
单项选择题 When is dock survey carried out?（）
单项选择题 （）, where a ship is refitted for a different use.
