用细绳栓住一小球,手拉着绳子使小球在水平桌面上滑动,此时小球受到的摩擦力大小是f 发布时间:2017-07-20 20:56 │ 来源:www.tikuol.com 题型:填空题 问题: 用细绳栓住一小球,手拉着绳子使小球在水平桌面上滑动,此时小球受到的摩擦力大小是f,若让小球在该水平桌面上滚动,这时小球受到的摩擦力应是______f(大于、小于、或等于)
题型:填空题 Questions 1-4What is a public school in England and Wales?()A.A profit-making private school.B.A non-profit-making independent school.C.A state school that is funded by non-governmental sources.D.A secondary school that is open to the majority of British students. 查看答案