图14-4-9所示超静定刚架,CD杆的内力情况为()。 A.有弯矩、有剪力、有轴力 发布时间:2018-01-21 03:40 │ 来源:www.tikuol.com 题型:单项选择题 问题: 图14-4-9所示超静定刚架,CD杆的内力情况为()。A.有弯矩、有剪力、有轴力B.无弯矩、无剪力、无轴力C.有弯矩、有剪力、无轴力D.无弯矩、无剪力、有轴力
题型:单项选择题 Lawrence Craven, a doctor from the USA, is the author of several published reports, one of ________ introduced the idea in 1953 ________ aspirin could reduce the risk of heart attacks.[ ]A. them; when B. which; that C. what; that D. which; when 查看答案