Which is not the maintenance work for shaft bearings in transmission system?（）<br>A:check oil level in bearing sump<br>B:check them for leakagec through end seals<br>C:pump bilges in time<br>D:check temperature

Which is not the maintenance work for shaft bearings in transmission system?（）
A:check oil level in bearing sump
B:check them for leakagec through end seals
C:pump bilges in time
D:check temperature

出自：海船船员证

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