In a （) boiler the water flows through the inside of the tubes while the hotgases pass ro

Failure of the burner flame in an auxiliary boiler would probably be a result of .A.water

When a boiler is operating, the water level in the gauge glass reads _____ when the boiler

How is the flow rate of a hydroelectric power station quantified？A．The depth of the water.

If in doubt as to the true water level when a boiler is being oil－fired, you should _____.

The correct pH value of boiler water is achieved by continuous addition of a suitable ____

Generating tubes in waste heat boilers are finned to _____.A.reduce gas flow turbulenceB.p