An important step in fighting any electrical fire is to ______.A.stop ventilationB.stop th An important step in fighting any electrical fire is to ______.A.stop ventilationB.stop th 分类:煤矿安全人员 题型:选择题 查看答案
An inert gas system is designed to reduce the possibility of tank explosions by ______.A.e An inert gas system is designed to reduce the possibility of tank explosions by ______.A.e 分类:煤矿安全人员 题型:选择题 查看答案
All inflatable life rafts have ______.A.safety straps from the overheadB.built in seatsC.r All inflatable life rafts have ______.A.safety straps from the overheadB.built in seatsC.r 分类:煤矿安全人员 题型:选择题 查看答案