What is usually installed into the Ni-Resist insert of a piston assembly?
A. upper compression ring
B. wrist pin
C. piston skirt
D. oil control ring
Answer: A
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A PV system that has batteries but no charge controller is often referred to as a(n) _____________________ PV system.
Fill in the blank(s) with the appropriate word(s).
The first worldwide effort to limit the use of ozone-depleting chemicals has become known as _________
A) The London Reassessment. B) The Montreal Protocol. C) SALT. D) CERN.
A(n) ____________________ is a percentage of the selling price paid to the salesperson.
Fill in the blank(s) with the appropriate word(s).
Rotary compressors are used primarily in ____.
A. large industrial refrigeration and air conditioning systems B. residential air conditioning C. small commercial refrigeration units D. domestic refrigerators