计算(1)(-17)+(-13)-18;(2)(-2)÷13×(-5);(3)( 发布时间:2017-05-02 11:33 │ 来源:www.tikuol.com 题型:解答题 问题: 计算(1)(-17)+(-13)-18; (2)(-2)÷13×(-5);(3)(13+16-118)×18 (4)-10+8÷(-2)2-(-2)2×(-3)
题型:解答题 —Hey, Paul! Don’t you remember me?—_________. You are Peter. We once were classmates.A.Yes, I do.B.No, I don’t.C.Yes, I don’t.D.No, I do 查看答案
题型:解答题 某吊车梁支座最大剪力设计值V=1005kN,采用突缘支座,剪切边的支座加劲肋为-400×20,梁腹板为-1300×12,采用Q235C钢材、E4315型焊条,当端部支承加劲肋作为轴心受压构件进行稳定性验算时,暂不计入绕对称轴弯扭效应的换算长细比,则其稳定性强度计算数值为()N/mm2。A.100.2B.110.2C.115.7D.127.3 查看答案