In order not to be harmful to the metals used in hot oil systems the thermal fluid must
a) be kept at a low temperature
b) have a neutral pH value
c) be noncorrosive
d) be diluted with glycol
e) be mixed with kerosene
Answer: C
In order not to be harmful to the metals used in hot oil systems the thermal fluid must
a) be kept at a low temperature
b) have a neutral pH value
c) be noncorrosive
d) be diluted with glycol
e) be mixed with kerosene
Answer: C