單項選擇題

A combustible gas indicator is used to determine （）.

A.if there is sufficient oxygen to support life
B.the toxicity of flammable gases or vapors
C.the amount of CO₂ present in flue gas
D.the presence of flammable gases or vapors in the air

你可能感興趣的試題

單項選擇題

A fire in a pile of linen is considered to be a class （）.

A.A fire
B.B fire
C.C fire
D.D fire

單項選擇題

Your vessel is taking on bunkers from a shore side facility, if oil begins flowing from one tank vent, which of the following actions should be taken FIRST?（）

A.Open the intake valve to an adjacent tank
B.Set out drip pans and sawdust and begin to mop up the spill
C.Signal the shore control point to shutdown
D.Close the valve on the tank vent line