钢梁腹板局部稳定采用()准则。A.腹板局部屈曲应力与构件整体屈曲应力相等 B.腹板实 发布时间:2017-07-24 08:56 │ 来源:www.tikuol.com 题型:单项选择题 问题: 钢梁腹板局部稳定采用()准则。A.腹板局部屈曲应力与构件整体屈曲应力相等B.腹板实际应力不超过腹板屈曲应力C.腹板实际应力不小于板的屈服应力D.腹板局部临界应力不小于钢材屈服应力
题型:单项选择题 In________, he began to learn Russian, when he was in________.[ ]A. 1970; the 50's B. the 1970; his 50sC. the 1970s; his fifties D. 1970s; his fifties 查看答案
题型:单项选择题 男性,30岁,患十二指肠溃疡4年,突发上腹剧痛5小时,继而全腹痛、大汗。查体:全腹压痛、反跳痛。考虑有溃疡病穿孔的可能。穿孔后几小时内手术效果较好()。A.48小时B.24小时C.12小时D.10小时E.8小时 查看答案