单项选择题
A combustible gas indicator meter is calibrated to read the percentage of（）.
A.vapor to oxygen
B.the flammable limit concentration
C.the autoignition concentration
D.the lower explosive limit concentration
点击查看答案&解析
相关考题
-
单项选择题
A class C fire would be burning（）.
A.fuel oil
B.wood
C.celluloid
D.electrical insulation -
单项选择题
A class B fire is most successfully fought by（）.
A.preventing oxygen from reaching the burning material
B.cooling the burning material below its ignition temperature
C.using the extinguishing agent to make the burning material fire-resistant
D.using the extinguishing agent to absorb the heat -
单项选择题
A Certificate of Inspection issued to a small passenger vessel describes（）.
A.the mimimum fire extinguishing equipment，lifejackets，survival and rescue craft she must carry
B.the name of the managing operator
C.any special conditions or restrictions on her operation
D.All the above
