Sludge may form. in the lubricating oil crankcase of a reciprocating air conditioning comp

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Sludge may form. in the lubricating oil crankcase of a reciprocating air conditioning compressor as a result of ______.

A.wax precipitation in the lube oil

B.contamination by dust, scale, or moisture

C.refrigerant bubbles in the lube oil

D.refrigerant reducing the lube oil viscosity

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