A lube oil sample taken from the main engine lube oil system has dark yellow opaque color.This is the result of （）<br>A:water contamination<br>B:mixing oils of two widely different viscosities<br>C:overheating<br>D:aeration

A lube oil sample taken from the main engine lube oil system has dark yellow opaque color.This is the result of （）
A:water contamination
B:mixing oils of two widely different viscosities
C:overheating
D:aeration

出自：海船船员证

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