单项选择题
A.at least 13.1 feet away from the galleys，living quarters or navigation spaces
B.from the open deck
C.only from areas equipped with power ventilation systems
D.isolated from any part of the vessel which normally contains sources of vapor ignition
单项选择题 A vessel has an amidships superstructure. Which location would be most suitable for on-deck stowage of automobiles?（）.
单项选择题 A towing vessel pushing a barge ahead and rigidly connected in a composite unit shall show the lights of（）.
单项选择题 A towboat is pushing barges ahead at a dangerously fast speed when（）.