(来学网)灌注桩护筒高度宜高出地面( )m或水面( )m。
  • A.
    (来学网)0.1,0.5~1.0
  • B.
    (来学网)0.2,0.7~1.5
  • C.
    (来学网)0.3,1.0~2.0
  • D.
    (来学网)0.4,2.0~3.0