Practice question

A scroll-type A/C compressor differs from a reciprocating piston compressor in that it:

  1. Compresses refrigerant with orbiting scrolls instead of pistons and reed valves
  2. Cannot be used on buses
  3. Requires R-12 only
  4. Uses no lubricant

Answer: A — Compresses refrigerant with orbiting scrolls instead of pistons and reed valves

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