What is the most important reason NOT to wear jewelry when working on air conditioning equipment?
A. shows vanity
B. might offend customers
C. could lose the jewelry
D. creates risk of potential electrical shock
Answer: D
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Answer the following statement true (T) or false (F)
The most realistic form of pictorial illustration is:
a. perspective b. dimetric c. isometric d. axonometric
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Answer the following statement true (T) or false (F)
Pneumatic controls are most commonly used:
A) To turn on and off small residential air-conditioning systems. B) To operate systems with programmable logic control. C) To control dampers and valves in large commercial systems. D) To move air through the duct of forced air systems.