A _________ in a boiler is used to put off fire in the furnace of the – McqOptions

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1.	A _________ in a boiler is used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit.
A.	low off cock
B.	usible plug
C.	top valve
D.	afety valve
Answer» C. top valve

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