单项选择题

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单项选择题
A. By jointing the two ends of a metal band around a wooden wheel.B. By fitting a wooden wheel into a cold metal band.C. By expanding a metal band around a wooden wheel.D. By heating a smaller metal band to make it fit around a wooden wheel.
A. By jointing the two ends of a metal band around a wooden wheel.
B. By fitting a wooden wheel into a cold metal band.
C. By expanding a metal band around a wooden wheel.
D. By heating a smaller metal band to make it fit around a wooden wheel.
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