单项选择题
A dazzling white burner flame in the boiler furnace indicates （）.
A.no combustion
B.deposits in the fuel
C.excessive air in the fuel
D.cold fuel oil
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相关考题
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单项选择题
When the boiler load returns to normal, the drum pressure will rise and steam bubble formation will reduce, causing a fall in water level This is known as （）.
A.swell
B.shrinkage
C.flash off
D.lack of water -
单项选择题
WHR stands for （）.
A.Water Head Register
B.Water Heater Re-circulating
C.Waste Heat Recovery
D.Waste Handle Reference -
单项选择题
As for a oil-fired boiler too much air would indicated by （）.
A.yellowish flame
B.golden yellow flame
C.milky flame
D.brilliant white flame
