The purpose of the safety relief valves installed on an auxiliary boiler is to （）.<br>A:relieve excess fuel oil pressure during the “off” fire cycle<br>B:admit water to the dry pipe<br>C:throttle the forced draft fan output for proper combustion<br>D:reduce excess steam pressure in the boiler

The purpose of the safety relief valves installed on an auxiliary boiler is to （）.
A:relieve excess fuel oil pressure during the “off” fire cycle
B:admit water to the dry pipe
C:throttle the forced draft fan output for proper combustion
D:reduce excess steam pressure in the boiler

出自：海船船员证

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