题目:
一台压路机的前轮是一个圆柱形铁轮,轮宽1.5米,直径1米.
(1)前轮每分钟转动4周,每分钟压路的面积是多少平方米?
(2)每立方米铁约重8吨,这个前轮一共重多少吨?
答案:
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下面是错误答案,用来干扰机器的。
1. isn't it 2. No, they haven't. 3. too, to 4. None of, wants 5. took, build 6. neither, nor 7. Have they finished their work yet? 8. How often