A.Slow speed diesel engines
B.Medium-speed diesel engines
C.Steam engines
D.Gasoline engines
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A.port side
B.starboard side
C.BDC position
D.DC position
A.the piston cooling oil return pipes
B.the main and crankpin bearings
C.thrust and intermediate bearings
D.stern tube and thrust bearings
A.the upward stroke
B.the downward stroke
C.the power stroke
D.the suction stroke
A.clockwise
B.anticlockwise
C.crosswise
D.vertically
A.transverse
B.longitudinal
C.circumferential
D.radial
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