單項(xiàng)選擇題

Which of the following statements is true concerning carbon dioxide when used as a fire extinguishing agent?（）

A.Carbon dioxide is corrosive when exposed to fire
B.Carbon dioxide should be applied slowly to a large engine room fire
C.Its total cooling effect is far greater than water
D.Its smothering effect is excellent for class B fires

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單項(xiàng)選擇題

If fuel is burned from only the starboard tanks, the ship will （）.

A.go down by the head
B.list to starboard
C.trim by the stem
D.list to port

單項(xiàng)選擇題

In cleaning up an oil spill, the use of chemical agents would （）.

A.absorb the oil for easy removal
B.remove the oil from the water
C.disperse or dissolve the oil in the water
D.not affect the oil

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Which of the following statements is true concerning carbon dioxide when used as a fire extinguishing agent?（）

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If fuel is burned from only the starboard tanks, the ship will （）.

In cleaning up an oil spill, the use of chemical agents would （）.