请论述在荷载—结构模型中,隧道围岩抗力的处理手段。
参考答案:
答题要点:
①抗力区与脱离区的概念;
②温氏假定与围岩抗力弹簧模拟。
I can sleep for 7 hours every day now, but if I take that job, I ____less time for sleep.
A.had
B.haven’t had
C.will have
D.wouldn’t have
骨折经过鼻骨、泪骨、眶底、下、壁、颧额缝,向后下止于上颌翼突缝的是()
A.颧骨骨折
B.鼻骨骨折
C.LefoutⅠ型骨折
D.LefoutⅡ型骨折
E.LefortⅢ型骨折