单项选择题
A.oil leakage in engine-room
B.hot work (welding, cutting, etc)
C.static electricity
D.all of the above
单项选择题 The basic training in fire prevention and fire fighting should include the theoretical elements which should cover （）.
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 （）.
单项选择题 STCW shall apply to seafarers（） on board seagoing ships entitled to fly the flag of a Party.