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
单项选择题 Which of the following statements is true concerning carbon dioxide when used as a fire extinguishing agent?（）
单项选择题 If fuel is burned from only the starboard tanks, the ship will （）.
单项选择题 In cleaning up an oil spill, the use of chemical agents would （）.
