沟槽槽底高程允许偏差是()A.0,-30mB.0,-40mC.0,-20mmD.0,-10m 沟槽槽底高程允许偏差是()A、0,-30mB、0,-40mC、0,-20mmD、0,-10m 发布时间:2025-07-26 22:53:14