单项选择题
A.flame safety lamp B.combustible gas indicator C.gasometer D.oxygen indicator
A fire involving trash and paper waste would be classif...
单项选择题A fire involving trash and paper waste would be classified as a （）.
A.class A B.class B C.class C D.class D
A fire in a pile of dunnage would be classified as a （）...
单项选择题A fire in a pile of dunnage would be classified as a （）.
In cleaning up an oil spill, the use of straw or reclai...
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
