High concentrations of H2S gas are most dangerous to personnel because they can ______.A.cause involuntary muscle contractionsB.paralyze your breathing systemC.cause eye inflammationD.cause dizziness
High concentrations of H2S gas are most dangerous to personnel because they can ______.
A.cause involuntary muscle contractions
B.paralyze your breathing system
C.cause eye inflammation
D.cause dizziness
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单选题An inert gas system on a tanker should be used to（）.Aprevent the generation of flammable or combustible gas in tanksBblow out cargo lines to prevent the build up of gas concentrationsCdilute tank atmospheres to keep gas concentrations below the lower explosive limitDprevent fires in the pumproom by continually displacing flammable vapors
单选题An inert gas system on a tanker should be used to（）.Aprevent the generation of flammable or combustible gas in tanksBblow out cargo lines to prevent gas concentrationsCdilute tank atmospheres to keep gas concentrations below the lower explosive limitDprevent fires in the pumproom by continually displacing flammable vapors