The oxy-acetylene torch kit is often preferred by technicians who braze __________.

A. flexible pipes
B. large diameter pipes
C. rigid pipes
D. small diameter pipes


Answer: B

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The most well-known casting resin for simple casting is probably ____because it is used in crafts and hobby work.    ?

A. ?epoxy B. ?polyester resin  C. ?acrylic D. ?polyurethane

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

The symbol for a limit switch illustrates a ball float.

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The range of temperatures within which a zeotropic refrigerant changes state at a given pressure is known as its _____.

a. saturation range b. latent-heat band c. fractionation rate d. temperature glide

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