单项选择题
A.distortion and compression B.hydraulic and mechanical C.magnetic and applied torque D.frictionless and hydraulic
The transmission of messages respecting the dangers spe...
单项选择题The transmission of messages respecting the dangers specified is free（）cost to the ships concerned.
A.of B.on C.at D.in
The towing light is a(n)（）.A.flashing amber lightB.yell...
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
The term OIL as used in the Oil Pollution Regulations m...
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
