One of the differences between a two-stroke engine and a four-stroke engine is,（）<br>A:a two-stroke engine can’t work without cylinders<br>B:a two-stroke engine can’t work without pistons<br>C:a two-stroke engine can’t work without crankshafts<br>D:a two-stroke engine can’t work without a blower

One of the differences between a two-stroke engine and a four-stroke engine is,（）
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

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