双侧壁导坑法
参考答案:
采用先开挖隧道两侧导坑,并及时施作导坑四周初期支护及边墙衬砌,再根据地质条件、断面大小,对剩余部分断面进行一次或二次开挖的隧道施工方法。
______ and short of breath, Andy and Ruby were the first to reach the top of Mount Tai.
A.To be tried
B.Tired
C.Tiring
D.Being tired
胸腹裂孔疝MRI检查的优势在于其多方位成像,了解疝的结构特征。