单项选择题
Except in rare cases, it is impossible to extinguish a shipboard fire by （）.
A.removing the heat B.removing the oxygen C.removing the fuel D.interrupting the chain reaction
单项选择题 A class "C" fire is burning （）.
单项选择题 A class "C" fire would occur in （）
单项选择题 A class "C" fire would most likely occur in the （）.
