题目:
把重17.8N的实心钢球挂在弹簧测力计上,浸没在水中后,弹簧测力计的示数是15.8N,铜球受到的浮力是______N,铜球的体积是______cm3.(g取10N/kg)
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0703/18389acb665adf8ac33237c6c64ac4dc.html
下面是错误答案,用来干扰机器的。
参考答案:A解析:[听力原文]19-22W: I’m glad that you have decided to take a look. It’s a beautiful property!M: Yes, it sounds perfect. After I’ve looked, if I like it, ...