When filling a hot oil system with oil and replacing nitrogen gas used to purge air from the system, _________ should be followed.
a) a line
b) a path
c) a pattern
d) an example
e) a code
Answer: C
When filling a hot oil system with oil and replacing nitrogen gas used to purge air from the system, _________ should be followed.
a) a line
b) a path
c) a pattern
d) an example
e) a code
Answer: C