The main function of the lubrication system in to enable （） of a film of oil between the moving parts.<br>A:the information<br>B:the formation<br>C:the scatter<br>D:the friction

The main function of the lubrication system in to enable （） of a film of oil between the moving parts.
A:the information
B:the formation
C:the scatter
D:the friction

出自：海船船员证

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