The purpose of the safety relief valves installed on an auxiliary boiler is to （）.
举一反三
- If the feed pump for an auxiliary boiler fails to deliver the feed water to the boiler， the cause maybe （）.
- Before an auxiliary boiler is shutdown for an extended period of time， the water in the boiler should have a pH value of （）.
- In an auxiliary boiler steam and water system， the highest pressure will be in the （）.
- Overload protection on hydraulic system is provided by the use of （）. A: stop valves B: pressure relief valves C: balance valves D: regulating speed valve
- The concentration of total dissolved solids in the water of an auxiliary boiler can increase as a result of （）.