[75] unit conversion 单位换算题:常见的有:公里与英里换算;公里与米之间;英尺与米之间 The great snipe is the fastest known migratory bird. Scientists found that the bird can fly non-stop for approximately 4200 miles (mi). If the bird’s speed is an average of 98 kilometers per hour (km/hr), how many hours can the great snipe fly without stopping? (Round the answer to the nearest tenth. 1 kilometer ≈0.62 miles) 大鹬(途中这只鸟)是已知的迁徙速度最快的鸟类。科学家发现,这种鸟可以连续飞行约4200英里。如果这种鸟的速度为平均每小时98公里,那么大鹬最长可以连续飞行多少小时? 将答案四舍五入到最近的十分位指的是: 小数点后保留一位数。 可以直接用计算器计算