On a tank vessel, which of the following substances would be burning in a class "B" fire?
A.Oil
B.Wood
C.Rags
D.Electrical wiring
第1题
A.second stage cylinder lockup
B.oil sump contamination
C.faulty operation of pneumatic valves
D.corrosion of air receiver baffles
第2题
A.the proper back pressure
B.the cooling water temperature
C.correct timing and proper seating
D.accurate metering and the exhaust temperature
第3题
A.Frequent draining of accumulated moisture
B.Frequent testing of relief valves
C.A close watch on temperature to prevent fluctuations in pressure
D.Frequent cleaning to re move oil and foreign matter
第4题
A.indicated horsepower
B.mean effective pressure
C.exhaust back pressure
D.compression pressure
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