平放在水平桌面上的物理课本对桌面的压强约为( ) A.1000帕 B.200帕 发布时间:2017-06-27 00:21 │ 来源:www.tikuol.com 题型:选择题 问题: 平放在水平桌面上的物理课本对桌面的压强约为( )A.1000帕B.200帕C.50帕D.2帕
题型:选择题 The train ________ arrive at 1:30, but it was an hour late. [ ]A. was about to B. was likely toC. was certain to D. was supposed to 查看答案