Large quantities of ______ are used to complete the foundations, which must support the loads from the boiler and all of the auxiliary equipment.

Large quantities of ______ are used to complete the foundations, which must support the loads from the boiler and all of the auxiliary equipment.

Large quantities of ______ are used to complete the foundations, which must support the loads from the boiler and all of the auxiliary equipment.



A ) steel
B ) refractory
C ) earth
D ) cement



Answer: D


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