Industrial systems often use _____ to concentrate sunlight on fluid-filled pipes.

A. ?evacuated tube
B. i?nsulated box
C. ?parabolic trough
D. flat plate


Answer: C

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The greatest avenue for organisms to enter the body is which of the following systems?

a. Digestive c. Digestive and respiratory b. Respiratory d. Neither digestive nor respiratory

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When hot gas defrost is used on low temperature systems with remote condensing units, the hot gas line is connected between the ____.

A. receiver and the inlet of the TX valve B. compressor discharge line to the suction manifold on the evaporator C. compressor discharge line to the distributor on the outlet of the TX valve D. compressor discharge line to the outlet of the EPR valve

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Name the line type used to define the outline and characteristic features of architectural plan components.

What will be an ideal response?

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After repairing a system that has had an electrical motor failure (compressor burnout), it is good field practice to re-use the recovered refrigerant in that system.

Answer the following statement true (T) or false (F)

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