A.5% B.10% C.15% D.20%
A.桩身完整 B.桩身存在轻微缺陷 C.桩身存在明显缺陷 D.桩身存在严重缺陷
A.200mm B.250mm C.350mm D.500mm
A.1组 B.2组 C.3组 D.4组