单项选择题
Which space(s) on your cargo vessel must have a fire detection system?（）
A.Any compartment containing explosives B.Any compartment adjacent to one containing explosives C.Enclosed spaces which are specially suitable for vehicles D.All of the above
单项选择题 Which precaution should be taken when testing a line throwing gun?（）
单项选择题 Which portable fire extinguisher should be used on a class C fire on board a vessel?（）
单项选择题 Which portable fire extinguisher is normally recharged in a shore facility?（）
