A、A.filled with water
B、B.purged
C、C.cleared of air
D、D.None of the above is true
更多“The furnace of an oil fired boiler should be （） before the operating burner is lit.”相关的问题
A、A.cool the furnace to prevent pre-ignition B、B.remove explosive vapors from the furnace C、C.evaporate accumulated unburned fuel oil D、D.provide sufficient air in the furnace to allow ignition of the fuel
A、help preheat the air for the furnaces B、help preheat the feedwater C、protect economizer from excessive heat D、prevent excessive furnace heat losses
A、A.relight the boiler immediately to prevent loss of steam pressure B、B.relight the fire off the brickwork as the bricks are cherry red C、C.purge the furnace of any combustible gases before attempting to relight the fire D、D.speed up the feed pump to prevent dry firing when the burner flame is reestablished
A、A.air or water in the furnace B、B.combustion pulses C、C.fuel oil pump failure D、D.flame failure
A、Create an instance of the XmlReader class by using the XmlReader Create method with an instance of the XmlReaderSettings class. B、Create an instance of the XmlReader class with an instance of the XmlTextReader class. C、Create an instance of the XmlDocument class and specify a location for the application schema. D、Create an instance of the XmlReader class with an instance of the XmlNodeReader class.
A、Create an instance of the XmlReader class by using the XmlReader Create method with an instance of the XmlReaderSettings class. B、Create an instance of the XmlReader class with an instance of the XmlTextReader class. C、Create an instance of the XmlDocument class and specify a location for the application schema. D、Create an instance of the XmlReader class with an instance of the XmlNodeReader class.
A、furnace to be re-purged B、electric charge to buildup in the igniter C、fuel pump to restart D、dram level to stabilize
A、furnace to be re-purged B、electric charge to buildup in the igniter C、fuel pump to restart D、drum level to stabilize
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