单项选择题

A fire in a pile of dunnage 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

In cleaning up an oil spill, the use of straw or reclaimed paper fibers would be an example of which type of oil removal?（）

A.Chemical agent removal
B.Mechanical removal
C.Absorbent removal
D.None of the above

单项选择题

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

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

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