Briefly describe what solders are and name the four classifications of solder.
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Solders are mainly an alloy of lead and tin with small amounts of other elements included. The four major classifications of solder are tin-lead, tin-lead-antimony, silver-lead, and a variety of special alloys.
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A(n) ____ bolt is designed to resist loosening.
A. DR B. UBS C. Torx D. CT
When multiple evaporators are manifolded together to a common suction line, each evaporator must have its own expansion valve.
Answer the following statement true (T) or false (F)
Capillary tube metering devices are commonly used today in:
A) Window units. B) Low-pressure chillers. C) Large split system air-conditioning systems. D) Commercial refrigeration rack systems.
Give the primary function of the MasterFormat™: Master List of Numbers and Titles for the Construction Industry:
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