试题与答案

某种型号拖拉机,前轮直径为50厘米,后轮直径为150厘米,拖拉机前进时,前轮转了24

题型:单项选择题

题目:

某种型号拖拉机,前轮直径为50厘米,后轮直径为150厘米,拖拉机前进时,前轮转了240圈,求后轮转了多少圈( )

A.60

B.40

C.30

D.80

答案:

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参考答案:A解析:[知识点] 工程质量的特点

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