A、lower than
B、higher than
C、as much as
D、the same as
更多“When a boiler is operating, the water level in the gauge glass reads （） when the boiler is shut down.”相关的问题
A、A.Carry out soot blowing if permissible B、B.Change fuel supply to diesel oil C、C.Close steam stop valves on boiler when pressure is reduced D、D.Drain boiler empty when it has cooled down
A、drop as the boiler warms up B、rise as the boiler warms up C、remain unchanged until the boiler is hot enough D、rise and fall with the steam demand
A、when the boiler has been secured long enough for most solids to settle B、when the boiler has been cooled to ambient temperature C、only after raising the water level to within 0~5 inch of the high water cutout only D、after bypassing the low pressure
A、boiler water level is low B、feedwater is too hot C、boiler steam demand is low D、feedwater is too cold
A、A.air supply is shut off B、B.fuel supply is shut off C、C.water supply is shut off D、D.safety valve lifts
A、A.rise when the steam pressure is increased B、B.remain constant as long as the feed pump operates C、C.fall when the steam pressure is decreased D、D.vary as the steam demand changes
A、take no measures B、extinguish the fire as soon as possible C、feed water to the boiler D、open the blow down valve
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