I. What are we? Write our English names

【参考答案】

(1)
flywheel (2)
Piston
(3)
bearing
(4)
Crankshaft
(5)
Valve
(6)
connecting rod
(7)
Piston rod
(8)
Camshaft
(9)
Spark plug
(10)
Cylinder
(11)
Cylinder Head