單項選擇題

When an oil fire has been extinguished, the surface of the oil should be kept covered with foam to prevent （）.

A.air from contacting the oil vapors
B.permitting re-ignition boiling of the heated oil
C.spontaneous combustion below the oil surface
D.toxic fumes from escaping to the surface

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單項選擇題

The process that occurs when heat is generated by a chemical reaction within a substance and continues to a point of ignition is known as （）.

A.chemical ignition
B.spontaneous combustion
C.chemical combustion
D.radiation ignition

單項選擇題

A vessel sailing through the specific special areas may discharge or dispose of （）.

A.incinerated ash at anytime
B.fairly dense material that will sink, i√emetal cans or glass bottles at anytime
C.victual waste when at least 12 nautical miles from shore
D.absolutely no garbage at anytime

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When an oil fire has been extinguished, the surface of the oil should be kept covered with foam to prevent （）.

你可能感興趣的試題

The process that occurs when heat is generated by a chemical reaction within a substance and continues to a point of ignition is known as （）.

A vessel sailing through the specific special areas may discharge or dispose of （）.