During check on top clearance in main bearings, turn the crankthrow for the relevant cylinder unit to （） and stop the lube oil circulating pump.<br>A:port side<br>B:starboard side<br>C:BDC position<br>D:DC position

During check on top clearance in main bearings, turn the crankthrow for the relevant cylinder unit to （） and stop the lube oil circulating pump.
A:port side
B:starboard side
C:BDC position
D:DC position

出自：海船船员证

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