A.a two-stroke engine can’t work without cylinders B.a two-stroke engine can’t work without pistons C.a two-stroke engine can’t work without crankshafts D.a two-stroke engine can’t work without a blower
A.a two-stroke engine works without exhaust operation B.a two-stroke engine works without compression stroke C.a two-stroke engine works without expansion stroke D.a two-stroke engine works without suction operation
A.fuel spray； the burning of the fuel B.the burned gas mixture； connecting rod C.medium shaft；crankshaft D.the burned gas mixture； piston rod
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