________connects the piston to the crankshaft.
A. Timing chain
B. Flywheel
C. Spark plug
D. Connecting rod
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Most pistons have three rings: ________.
A. two oil rings and one compression ring
B. three compression rings
C. two compression rings and one oil ring
D. three oil rings
________ transform the energy of the expanding gases into mechanical energy.
A. Piston rings
B. Connecting rods
C. Pistons
D. Valves
Crankshaft is held in ________.
A. oil pan
B. combustion chamber
C. cylinder head
D. cylinder block
When the piston moves up with both intake and exhaust valves closed, we call it ________.
A. intake stroke
B. compression stroke
C. power stroke
D. exhaust stroke
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