单选题The cylinder oil will have to neutralize the acidic products of combustion and have good （） properties to keep the metal surfaces clean.AdetergentBde-oilingCdefrostingDdemulsifying
单选题
The cylinder oil will have to neutralize the acidic products of combustion and have good （） properties to keep the metal surfaces clean.
A
detergent
B
de-oiling
C
defrosting
D
demulsifying
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