单项选择题

A fire in a pile of canvas would be classified as a （）.

A.class A
B.class B
C.class C
D.class D

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单项选择题

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

单项选择题

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

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

单项选择题

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