甲、乙两物体,质量之比为3:5,放在水平桌面上,与桌面的接触面积之比为4:1,则 发布时间:2017-06-28 12:42 │ 来源:www.tikuol.com 题型:填空题 问题: 甲、乙两物体,质量之比为3:5,放在水平桌面上,与桌面的接触面积之比为4:1,则甲、乙两物体对桌面的压力之比为 _________ ,压强之比为 _________ .
题型:填空题 The company trouble early on,when a major order was cancelled. [ ]A. made intoB. knocked into C. ran intoD. dropped into 查看答案