The primary advantage of mechanical fittings over heat-bonded joints is that they _____

a. are much stronger
b. are less likely to leak
c. can be used on smaller sizes of tubing
d. can be taken apart and reassembled more easily


d

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Sequence control is required whenever the ____ must be operating before the machine itself can be operated safely.

a. upstream equipment b. equipment connected in parallel with a machine c. auxiliary equipment associated with a machine d. downstream equipment

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An ____ on each type of section is used to specify materials and explain special installation procedures.

A. Annotation B. Amendment C. Abstraction D. Appendix

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Hard starting may also occur in a low ambient condition, causing low head pressures.

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

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How should a thermostat be connected to a system that has two transformers: one in the furnace and one in the air conditioner?

A) Wire the furnace to RH and the air conditioner to RC. B) Tie the transformers together and leave off the R terminal. C) Wire both transformers to the R terminal. D) Wire the furnace to RC and the air conditioner to RH.

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