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Refrigeration & AC
Refrigeration and Air Conditioning Mechanic Red Seal Certification
Oil Management & Lubrication
Knowledge Check
Oil Management & Lubrication
Knowledge Check
Knowledge Check
1 / 8
What must be installed at the base of every vertical riser in a refrigeration system?
A
A P-trap
B
A check valve
C
A sight glass
D
An oil separator
Check Answer
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