Universal practice test, question 12 of 100
Universal practice test — Core — question 12 of 100
Which lubricant was traditionally used in R-12 CFC refrigeration systems?
You can move on without answering. Unanswered questions are counted as wrong.
Universal practice test — Core — question 12 of 100
Which lubricant was traditionally used in R-12 CFC refrigeration systems?
You can move on without answering. Unanswered questions are counted as wrong.