What is the purpose of the door switch on a furnace?
A) to prevent technicians from being shocked
B) to prevent unauthorized service of the furnace
C) to fasten the furnace panel securely
D) to prevent circulation of combustion products in the house
D
You might also like to view...
An acute angle has _____.
a. less than 90 degrees b. more than 90 degrees c. exactly 180 degrees (a flat line) d. more than 90 degrees, but less than 180 degrees
Which of the ways of showing threads includes hidden lines to represent the root of the thread?
A. Detailed B. Schematic C. Isometric D. Simplified
On a body condition scoring system of 1 to 5, the desired score for dairy cows that are
approaching calving should be near: A. 2.5 B. 3.5 C. 4.5
The fastest method for charging a large system that holds 50 lb of refrigerant is to add:
A) Liquid into the king valve with the king valve front-seated and the system operating. B) Liquid into the suction service valve with the system running. C) Vapor into the suction service valve with the system off. D) Vapor into both the suction service valve and king valve with the system off.