单项选择题
Who maintains the fire-fighting and life-saving apparatus?（）
A. The second officer. B. The chief officer. C. The third officer. D. Bosun.
单项选择题 We should take （）to keep the chemicals away from fire.
单项选择题 During a fire drill on a vessel, what action is required？（）
单项选择题 （）are used for lifesaving .
