單項選擇題What is the harmful effect of sulfur in a fuel?()

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


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1.單項選擇題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

2.單項選擇題The flash point of a petroleum product is an indication of its()

A.viscosity
B.pour point
C.volatility
D.lower explosive limit

3.單項選擇題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

4.單項選擇題One of the major features of the STCW95 is the adoption of a new STCW Code, to which many have been transferred()

A.safety regulations
B.technical regulations
C.minimum requirements
D.standard requirements