单项选择题
The towing light is a(n)（）.
A.flashing amber light
B.yellow light with the same characteristics as the sternlight
C.all-round yellow light
D.yellow light with the same characteristics as the masthead light
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相关考题
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单项选择题
The term OIL as used in the Oil Pollution Regulations means（）.
A.fuel oil
B.sludge
C.oil refuse
D.All of the above -
单项选择题
The radiotelephone safety message urgently concerned with safety of a person would be prefixed by the word（）.
A.Mayday
B.Pan
C.Safety
D.Interco -
单项选择题
The radiotelegraph alarm signal is（）.
A.SOS sent three times
B.ten one-second dashes with a four-second interval between them
C.twelve four-second dashes with a one-second interval between them
D.twelve one-second dashes with a short interval between them
