The tight bond between the refrigerant tube and the fins on tube-and-fin coils is made by:
A) Soldering the fins to the tubing.
B) Machining the fins and tubing out of a single piece of solid metal.
C) Expanding the tubing into the fins.
D) Glueing the fins to the tubing.
C
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The lily bulb is soft and dormant and must be handled carefully so it is not bruised, nor should it be allowed to dry out
Indicate whether the statement is true or false
Selecting the first minimally acceptable alternative is called
a. satisficing. b. bounded rationality. c. brainstorming. d. rational decision making. e. none of these.
When de-brazing a joint on a refrigeration system, often:
A) The vacuum created by the flames will cause a quick inward suction when the tube is pulled. B) The oil fumes will ignite when the joint is opened. C) The exiting fumes will extinguish the torch flame. D) The residual refrigerant will crystalize around the tube outlet.
Sheep were used by the early colonists mainly for their:
A. meat B. milk C. wool D. skin