A.She has made lots of money as a doctor. B.She is going to take care of her old dad. C.She has never got on with her father. D.She is kind and generous by nature.
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案:
举一反三
【简答题】如图所示,一块长方体橡皮泥,质量是30克,重为 ________ N ,侧放于水平桌面上时,它与桌面的接触面积是10cm 2 ,它对桌面的压强是 ________ Pa 。若沿 ab 方向竖直向下切去一块,则剩余部分对桌面的压强 ________ (选填“变大”、“变小”或“不变”)。( g 取10N/kg)