Steel-wire bar supports that offer no protection against rusting are designated as Class _____
a. A
b. B
c. C
d. D
a
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Since one concrete block measures _____ in height including the mortar joint, _____ the height expressed in inches to find the number of blocks of which the height consists.
A. 6.75 inches; divide7 into B. 8 inches; divide 8 into C. 8 inches; multiply 0.8 by D. 10 inches; multiply .010 by
Answer the following statement(s) true (T) or false (F)
The ideal combustion ratio for propane is 1 part propane to 10 parts air.
The most common method of cooling standby generator sets is _____.
a. a mounted radiator with an engine-driven fan b. liquid-to-liquid heat exchangers c. battery-powered systems d. compressed air systems
A reset controller in a hydronic heating system is used to _____.
a. reset the burner after shutdown b. control multiple zone valves c. modulate pump water flow d. monitor outdoor temperature