Before reassembling any machinery, you should （）.<br>A:replace all bearings regardless of length of service<br>B:apply a heavy coat of oil to all mating surfaces<br>C:clean any corroded surfaces and file all burrs smooth<br>D:coat all parts with alemite grease

Before reassembling any machinery, you should （）.
A:replace all bearings regardless of length of service
B:apply a heavy coat of oil to all mating surfaces
C:clean any corroded surfaces and file all burrs smooth
D:coat all parts with alemite grease

出自：海船船员证

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