A . high steam pressure in the boiler
B . abnormally high feed water temperature
C . abnormally high boiler water temperature
D . steam demand exceeding feed pump capacity
[单选题]The water in an auxiliary boiler should be tested for chloride content to determine ( ).A.total dissolved solidsB.salt contaminationC.water harcnessD.chlorine contamination
[单选题]When an auxiliary boiler is panting and emitting black smoke, you should ().A . increase the fuel oil temperatureB . decrease the fuel oil temperatureC . decrease the fuel oil supply pressureD . increase the air supply
[单选题]The water in an auxiliary boiler should be tested for chloride content to determine ().A . total dissolved solidsB . salt contaminationC . water hardnessD . chlorine contaminatio
[单选题]In an auxiliary boiler steam and water system, the highest pressure will be in the ().A . steam stop valveB . dry pipeC . feedwater systemD . generating tube
[单选题]Before an auxiliary boiler is shutdown for an extended period of time, the water in the boiler should have a pH value of ().A . 10B . 7C . 4D . 1
[名词解释] 辅助给水系统/应急给水系统 auxiliary feed water system/emergency feed water system
[单选题]H.ow to operate boiler?
[单选题]The procedures recommended for auxiliary boilers having high salinity include ().A . treating with oxygen scavengersB . securing the boiler and giving it a blowing downC . increasing the pHD . reducing the phosphate level
[单选题]The water level showing in a boiler water gauge glass is usually ( ) duringworking.A.higher than the actual drum water levelB.equal to the actual drum water levelC.increasing due to steam condensation in the glassD.lower than actual drum wafer level
[单选题]英文Radial Feed表示().A . 反馈B . 进给速度C . 旋转运动D . 径向进给