单项选择题
A.flashing point B.combustion point C.auto-ignition point D.lower explosive limit
Where shall the key to C02 room be kept?（）A.In masters ...
单项选择题Where shall the key to C02 room be kept?（）
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
