If the feed pump for an auxiliary boiler fails to deliver the feed water to the boiler, the cause maybe （）.

[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

A The fuel injection pump B The fuel feed pump C The fuel transfer pump D The fu

A distorted furnace in a fire-tube auxiliary boiler may be the result of （）A. fi

Burner ignition failure in an automatically fired auxiliary boiler would be caus

[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]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