Which of the following refrigerants has the lowest boiling temperatures at atmospheric pressure?
A. R-12.
B. R-22.
C. R-134a.
D. R-502.
Answer: D
Trades & Technology
You might also like to view...
The specific gravity of water is:
A) 0.1. B) 1.0. C) 10.0. D) 5.0.
Trades & Technology
The battery load test measures the battery's ability to produce current for a long amount of time.
Answer the following statement true (T) or false (F)
Trades & Technology
A sourcing solid-state PLC output module uses an internal __________ transistor.
A. NPN B. PNP
Trades & Technology
The ________ is a unit of electrical pressure
A) Volt B) Ohm C) Coulomb D) Ampere
Trades & Technology