单选题On a four-stroke diesel engine, when the piston is driven downwards by the expanding gas, it delivers power to the crankshaft through the （）.Athrust blockBsounding rodCconnecting rodDpush rod
单选题
On a four-stroke diesel engine, when the piston is driven downwards by the expanding gas, it delivers power to the crankshaft through the （）.
A
thrust block
B
sounding rod
C
connecting rod
D
push rod
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