单选题If the chemical analysis of a lube oil sample taken from a diesel engine indicates an increased neutralization number, the （）.Aacidity has increasedBviscosity has decreasedCdemulsibility has improvedDfoaming is guaranteed to occur
单选题
If the chemical analysis of a lube oil sample taken from a diesel engine indicates an increased neutralization number, the （）.
A
acidity has increased
B
viscosity has decreased
C
demulsibility has improved
D
foaming is guaranteed to occur
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