Charging a refrigeration system refers to ____.

A. removing refrigerant from a system
B. adding refrigerant to a system
C. cleaning the refrigerant
D. vaporizing the refrigerant


Answer: B

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Where does a wrist pin fit to a piston?

A. upper ring land B. piston crown C. pin boss D. lower oil control groove

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A LePelletier gear set is a combination of a simple planetary set and a ________ gear set.

A) Simpson B) Reverse C) Spur D) Ravigneaux

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A "dedicated" geothermal well is part of a(n) ____________________ system.

Fill in the blank(s) with the appropriate word(s).

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Machine screws are stronger and more precise than cap screws.

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

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