Persons engaged in the transport of dangerous goods shall（）training in the contents of dangerous goods requirements commensurate with their responsibilities.

A.permitted for drawing fuel samples
B.permitted for draining fuel from lines
C.permitted for bleeding air from lines
D.prohibited

A.danger to crew and cargo
B.necessity of periodic inspection
C.possible need to jettison
D.All of the above

A.a boom
B.suction equipment
C.chemical agents
D.skimmers