Two rams of the hydraulic gear are linked at their outer ends to （） by a crosshead and swivel block.<br>A:the piston rod<br>B:the tiller arm<br>C:the connecting rod<br>D:the rudder

Two rams of the hydraulic gear are linked at their outer ends to （） by a crosshead and swivel block.
A:the piston rod
B:the tiller arm
C:the connecting rod
D:the rudder

出自：海船船员证

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