Type I mock exam, question 2 of 50
Type I mock exam — Core — question 2 of 50
R-123 replaced R-11 in many low-pressure chillers. How is R-123 classified?
You can move on without answering. Unanswered questions are counted as wrong.
Type I mock exam — Core — question 2 of 50
R-123 replaced R-11 in many low-pressure chillers. How is R-123 classified?
You can move on without answering. Unanswered questions are counted as wrong.