be increased
be decreased
remain constant
either be increased or remain constant
第1题：
When an auxiliary boiler is panting and emitting(发出) black smoke, you should______.
A.increase the fuel oil temperature
B.decrease the fuel oil temperature
C.decrease the fuel oil supply pressure
D.increase the air supply
第2题：
cold fuel oil
low fuel oil pressure
low atomizing steam pressure
water in the fuel oil
第3题：
A.filtering
B.centrifuging
C.depositing
D.operating
第4题：
the type of coolant
the design of the engine
the type of fuel to be burned
B and C
第5题：
relieve excess fuel oil pressure during the “off” fire cycle
admit water to the dry pipe
throttle the forced draft fan output for proper combustion
reduce excess steam pressure in the boiler
第6题：
Which statement about the inert gas system is TRUE ________．
A.Boiler soot blowers should never be used when the IG system is operating
B.The boiler will produce the best quality of flue gas for the IG system when the boiler load is very light
C.The boiler will produce the most quantity of flue gas for the IG system when the boiler load is very light
D.Flue gas with excessive oxygen content is de-oxygenated in the scrubber
第7题：
low water level
high water level
excessively high fuel pressure
low oil temperature
第8题：
The fuel oil supply system to an automatic auxiliary boiler, will automatically shutdown if the boiler ______.
A.steam demand is high
B.salinity is high
C.safety valve simmers(爆发)
D.burner flame is extinguished
第9题：
increase the fuel oil temperature
decrease the fuel oil temperature
decrease the fuel oil supply pressure
increase the air supply
第10题：
to a great extent
on a great extent
on mainly
on only