A.河岸 B.坝轴 C.水流 D.整治线
A.二层 B.三层 C.四层 D.五层
A.1层 B.1~2层 C.2~3层 D.1~3层
A.200mm B.300mm C.400mm D.500mm
A.先回填水侧 B.先回填陆侧 C.水陆两侧对称回填 D.沿桩周对称回填