Combustiblegasindicatorsmeasurethepresenceofcombustib

Combustible gas indicators measure the presence of combustible gas as a percentage of the____.

A.flash point

B.upper explosive limit

C.lower explosive limit

D.fire point

正确答案：C
易燃气体检测仪测量存在的易燃气体占爆炸下限浓度的百分比