q7: when comparing the fitting of an r - 12 and r - 134a system, the r - 134a system has \nsmaller metal…
q7: when comparing the fitting of an r - 12 and r - 134a system, the r - 134a system has \nsmaller metal fittings \nlarger metal fittings \nsmaller plastic fittings \nlarger plastic fittings
Answer
Brief Explanations:
R - 134a has a higher operating pressure than R - 12. To withstand this higher pressure, R - 134a systems typically have larger metal fittings.
Answer:
B. larger metal fittings