韧性材料在拉应力作用下断裂的断口呈()。 A.杯锥状 B.贝纹状 C.粗糙晶粒状 D 发布时间:2020-06-04 19:23 │ 来源:www.tikuol.com 题型:单项选择题 问题: 韧性材料在拉应力作用下断裂的断口呈()。A.杯锥状B.贝纹状C.粗糙晶粒状D.细晶粒状
题型:单项选择题 — Alison, I'm sorry. I can't come to the wedding with you tomorrow morning. — ________? — My grandma was severely ill, so I have to stay in the hospital to look after her. [ ]A. How is it B. How come C. So what D. What's the problem 查看答案
题型:单项选择题 This Agreement may be()6 months before its expiry.A.renewedB.prolongedC.expandedD.postponed 查看答案