单项选择题
Fire protection regulations for towing vessels allow all of these types of fuel piping，EXCEPT（）.
A.steel
B.aluminum in an aluminum-hulled vessel
C.schedule 80 fire resistant plastic pipe
D.nickel-copper，copper-nickel or annealed copper
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相关考题
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单项选择题
Fire protection regulations apply to those towing vessels（）.
A.used only for pollution response
B.owned and operated by the US government
C.used only within a barge fleeting area
D.used only on inland waters -
单项选择题
Fire protection and manning regulations for towing vessels state that the Master or person in charge must ensure that all crew members who have not participated in the drills or received the safety orientation（）.
A.receive a safety orientation or view a videotape before the vessel gets underway
B.view a videotape on safety procedures within 48 hours of reporting for duty
C.receive a safety orientation within 24 hours of reporting for duty
D.none of the above -
单项选择题
Fire may be spread by which means?（）
A.Conduction of heat to adjacent surfaces
B.Direct radiation
C.Convection
D.All of the above
