铺设垫木时,垫木埋入岛面深度应为垫木高度的( )。
A.1/3B.1/4C.2/3D.1/2
参考答案:D
There's a map of China _____the wall. [ ]
A. in
B. on
C. under
D. between
当有刀子、木棒等物刺入腹部时,在急救时应立即拔除,然后再送往医院救治。()