Boiler refractory firebrick is secured to the casing by __________.
Official USCG Answer & Rule Citation
Correct Answer: Option A — slots in the brick engaging anchor bolts
In USCG Steam Plants (Boilers & Turbines), regarding 'Boiler refractory firebrick is secured to the casing by', the verified engineering fact is: 'slots in the brick engaging anchor bolts'.
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