单项选择题
A.darkness B.daylight C.simulated engine-room D.all of the above
The main causes of fire on board ships are （）A.oil leak...
单项选择题The main causes of fire on board ships are （）
A.oil leakage in engine-room B.hot work (welding, cutting, etc) C.static electricity D.all of the above
The basic training in fire prevention and fire fighting...
单项选择题The basic training in fire prevention and fire fighting should include the theoretical elements which should cover （）.
A.the three elements of fire and explosion B.lower and upper flammable limits C.classification of flies and applicable extinguishing agents D.All of the above
单项选择题The basic training in fire prevention and fire fighting should include the practical elements which should allow the trainees to acquire the ability to （）.
A.use self-contained breathing apparatus B.use various types of portable fire extinguishers C.effect a rescue in a smoke-filled space wearing breathing apparatus D.All of the above
