A.oxygen B.carbon dioxide C.H2O D.H2
单项选择题I’m on fire and have dangerous cargo on board. The most urgent assistance (最紧急的援助)in this case would be（） .
A.lifeboat B.medicine C.firefighting D.lifesaving
单项选择题（）(停顿) for a while when the boat leaves the surface.
A.Halting B.Halt C.Adjust D.Heave
单项选择题（）(所有船员) must know the locations as well as the operations of the life-saving and fire-fighting appliances.
A. All officers B. All engineers C. All the crew D. AB and C
单项选择题Second Officer, give one （）(长声).
A. blast B. short blast C. prolonged blast D. prolonged blasts
单项选择题Where do you post your （）(火势控制图)?
A. fire control plan B. fire control C. fire plan D. fire-fighting plan
