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

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

出自：海船船员证

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