A.The watch keeping personnel
B.The chief engineer
C.The person on a bunker barge
D.Any of the above
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A.Cast iron
B.Cast steel
C.Forged steel
D.Aluminum
A.At the top
B.At the bottom
C.In the top
D.In the bottom
A.Misalignment
B.Length
C.Strength
D.Stresses
A.Hot bearing
B.Starting valves
C.Unequal distribution of load
D.Excessive crankshaft clearance
A.The fuel oil
B.The lube oil
C.The sea water
D.The fresh water
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A diesel engine piston ring face is in direct contact with the （）.
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