单项选择题
A.paint thinner in an open can
B.fuel accumulation in the bilge
C.oily rags in an unvented compartment
D.gasoline stored in steel drums
单项选择题 All classes of fires can be safely combated using（）
单项选择题 If there were a fire in the bunker tanks, you would（）
单项选择题 Any friction fit, tightness or adhesion of the part of any load being lifted should be broken by wedge or tapping and not by increasing the load on the applianceAccording to this sentence, （）