单项选择题
A.It causes excessive smoking and soot at low firing rates B.It doesn’t readily burn when combined with oxygen C.It clogs fuel oil strainers more often D.It forms a corrosive acid when mixed with water or water vapor
The flash point of a liquid refers to the temperature （...
单项选择题The flash point of a liquid refers to the temperature （）
A.at which a liquid will give off inflammable vapors B.at which a liquid will burn steadily C.at which a liquid will explode D.that a liquid must reach before it will flow readily
The flash point of a petroleum product is an indication...
单项选择题The flash point of a petroleum product is an indication of its（）
A.viscosity B.pour point C.volatility D.lower explosive limit
The Garbage Record Book, as a part of the ship’s offici...
单项选择题The Garbage Record Book, as a part of the ship’s official logbook, shall be kept on board and preserved for a period of （）
A.3 years after making the first entry B.2 years after the last entry C.3 months after last entry D.3 years after the last entry
