单项选择题
Persons engaged in the transport of dangerous goods shall（）training in the contents of dangerous goods requirements commensurate with their responsibilities.
A.have B.make C.take D.receive
单项选择题 Outlets in gasoline fuel lines are（）.
单项选择题 Many dangerous cargoes are stowed on deck because of the（）.
单项选择题 It is generally NOT allowed to clean up an oil spill by using（）.
