单项选择题
Double full astern.()
A.全速后退 B.再后退三 C.半速后退 D.后退三
单项选择题 The pilot asks the quartermaster to change the steering mode from autopilot to manual.()
单项选择题 The captain is responsible for the safety of the crew’s lives, the ship and the cargo. ()
单项选择题 The bosun is in charge of sailors. ()