A、provide a means of draining the boiler
B、warn the engineer of low water level
C、cool the crown sheet at high firing rates
D、open the burners electrical firing circuits
更多“Fusible plugs are installed in fire-tube boilers to （）.”相关的问题
A、Fusible links must be replaced if a damper is activated B、Fusible links are tested by applying a source of heat to them C、Fusible links must be replaced at every inspection for certification D、A fusible link will automatically open after a fire is extinguished and reset the damper
A、A fusible link will automatically open after a fire is extinguished and reset the damper B、Fusible links must be replaced at every inspection for certification C、Fusible links are tested by applying a source of heat to them D、Fusible links must be replaced if a damper is activated
A、Edit the Open Software Description (.osd) file for Office and declare the plug - in as a dependency. B、Edit the Open Software Description (.osd) file for the plug - in and declare Office as a dependency. C、Edit the Open Software Description (.osd) file for Office and set MANDATORY=FALSE in the CODEBASE element. D、Edit the Open Software Description (.osd) file for the plug - in and set MANDATORY=FALSE in the CODEBASE element.
A、Edit the Open Software Description (.osd) file for Office and declare the plug - in as a dependency. B、Edit the Open Software Description (.osd) file for the plug - in and declare Office as a dependency. C、Edit the Open Software Description (.osd) file for Office and set MANDATORY=FALSE in the CODEBASE element. D、Edit the Open Software Description (.osd) file for the plug - in and set MANDATORY=FALSE in the CODEBASE element.
A、Edit the Open Software Description (.osd) file for Office and declare the plug-in as a dependency. B、Edit the Open Software Description (.osd) file for the plug-in and declare Office as a dependency. C、Edit the Open Software Description (.osd) file for Office and set MANDATORY=FALSE in the CODEBASE element. D、Edit the Open Software Description (.osd) file for the plug-in and set MANDATORY=FALSE in the CODEBASE element.
A、The computer does not support this type of drive. B、Connector is plugged in backwards. C、Power is plugged in backwards. D、All floppies are corrupt.
A、remote operated valve B、fusible link C、CO2 system pressure switch D、heat or smoke detector
A、remotely operated valves B、fusible links C、C02 system pressure switches D、heat or smoke detectors
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