单项选择题
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
单项选择题 STCW shall apply to seafarers（） on board seagoing ships entitled to fly the flag of a Party.
单项选择题 While loading bunkers, you notice oil on the water near the vesselWhat should you do first?（）
单项选择题 In discussing oil pollution, one important fact to remember is that the problem remains the same （） heavy （） light oil is spilled into the water.