Technician A says weld-through coating is designed to liquefy and reflow around the weld nugget to protect the weld joint. Technician B says prior to applying the two-part epoxy primer, the surface should be chemically etched to obtain optimum results. Who is correct?

A. Technician A only
B. Technician B only
C. Both Technicians A and B
D. Neither Technician A nor B


C. Both Technicians A and B

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Another name for noneconomic attributes is:

(a) Sustainability (b) Intangible factors (c) Equivalence (d ) Evaluation criteria

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Gerbils usually have:

A) narrow heads B) small eyes C) sunken eyes D) jet black eyes

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At typical operating conditions, the high efficiency air-conditioning system will operate with an evaporator boiling point of ____°F.

A. 40 B. 45 C. 50 D. 55

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What is the purpose of the low ambient control on a commercial air conditioner?

A) To permit the unit to cool even at low ambient temperatures B) To cycle the air conditioning system based on ambient temperature C) To energize heat strips to control the ambient temperature D) To prevent the system from operating at low ambient temperatures

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