单项选择题
A.0.6 B.0.7 C.0.8
A.2.3%;1.74%;1.52% B.2.34%;1.4%;1.52% C.2.34%;1.74%;1.52%
A.喷淋管道沟槽定额 B.给排水管道沟槽定额 C.工业管道沟槽定额