The guide shoes are secured to the crosshead by means of()
A、through bolts
B、end chock bolts
C、side chock bolts
D、tap-bolts
A、through bolts
B、end chock bolts
C、side chock bolts
D、tap-bolts
A、the piston cooling oil return pipes B、the main and crankpin bearings C、thrust and intermediate bearings D、stern tube and thrust bearings