单项选择题
Ventilation systems connected to a compartment in which a fire is burning are normally closed to prevent the rapid spread of the fire by（）.
A.convection B.conduction C.radiation D.spontaneous combustion
单项选择题 Under the regulations for cargo vessels，which statement is TRUE concerning fireman’s outfits?（）
单项选择题 Under the Carriage of Goods by Sea Act of 1936，a vessel will be liable for damage to a cargo when the damage arises out of（）.
单项选择题 Triethylene glycol fires may be extinguished by（）.
