单项选择题
A.In master's cabin B.In third office's cabin C.In a break-glass-type enclosure conspicuously located adjacent to the room D.In a locked locker conspicuously located adjacent to the room
Your vessel is crossing a narrow channel.A vessel to po...
单项选择题Your vessel is crossing a narrow channel.A vessel to port is within the channel and crossing your course.She is showing a black cylinder.What is your responsibility?（）
A.hold your course and speed B.sound the danger signal C.begin an exchange of passing signals D.do not cross the channel if you might impede the other vessel
The disinfection of various compartments in a vessel by...
单项选择题The disinfection of various compartments in a vessel by filling with a gaseous agent to destroy rats and all insects pests which act as germ carriers means（）.
A.displacement B.fumigation C.discharging D.compensation
Backing means the wind（）.A.is changing clockwise in dir...
单项选择题Backing means the wind（）.
A.is changing clockwise in direction B.is changing anticlockwise in direction C.is changing cyclonically or variably in direction D.remains unchanged in direction at the time
