A . steam stop valve
B . dry pipe
C . feedwater system
D . generating tube
[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]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]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]If the feed pump for an auxiliary boiler fails to deliver the feed water to the boiler, the cause maybe ().A . high steam pressure in the boilerB . abnormally high feed water temperatureC . abnormally high boiler water temperatureD . steam demand exc
[单选题]B.B.oiler rooms are often dirty and steamy, but this one is el.ean and cool. Fox Point is a very new47-unit living building in South Bronx, one of the city’s poorest areas. Two-thirds of the people living there are formerly (以前) homeless people, whos
[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
[单选题]The water in an operating auxiliary boiler should be tested for alkalinity and chloride content each().A . hourB . dayC . weekD . month
[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]Water, when boiled, always ______ steam.A. gives inB. gives upC. gives offD. gives away
[单选题]In readying an auxiliary water-tube boiler for a routine hydrostatic test, which of the following procedures should be undertaken prior to filling the boiler with fresh water?()A . The safety valve escape piping should be disconnected from the valve