The lower end of each piston rod is reduced in diameter to fit a bore in the （）, this being secured to the piston rod by a nut.<br>A:piston gudgeon pin<br>B:piston skirt<br>C:cross-head<br>D:cross-head pin

The lower end of each piston rod is reduced in diameter to fit a bore in the （）, this being secured to the piston rod by a nut.
A:piston gudgeon pin
B:piston skirt
C:cross-head
D:cross-head pin

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