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单选题
If the diesel fuel vapors present are within the flammable range （）.
A
the vapor air mixture is too rich to burn
B
an explosion may occur if a source of ignition is present
C
the vapor air mixture is too lean to bum the upper explosive
D
limit has been exceeded
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更多 “单选题If the diesel fuel vapors present are within the flammable range （）.A the vapor air mixture is too rich to burnB an explosion may occur if a source of ignition is presentC the vapor air mixture is too lean to bum the upper explosiveD limit has been exceeded” 相关考题
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exerted by liquid cargo on a cargo hose bodyC
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考题
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permits the passage of vapor but not of flameB
prevents the passage of flammable vaporsC
prevents inert gas from leaving a tankD
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None of the above
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单选题An inert gas system on a tanker should be used to（）.A
prevent the generation of flammable or combustible gas in tanksB
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dilute tank atmospheres to keep gas concentrations below the lower explosive limitD
prevent fires in the pumproom by continually displacing flammable vapors
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