The water in an auxiliary boiler should be tested for chloride content to determine ( ).

A．total dissolved solids

B．salt contamination

C．water harcness

D．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]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]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]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]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

[填空题] H AUXILIARY WATER TEMPERATURE TSHH-713表示（）。

[单选题]A new water boiler was installed in our building last week, which could pro