A.1:2000~1:10000 B.1:5000~1:2000 C.1:5000~1:10000 D.1:50000~1:100000
A.性能B.技術(shù)C.特點(diǎn)D.都不對(duì)
A.干拌砂漿B.砂漿C.砂石D.混合砂漿