A.16 B.14 C.12
A.底涂層應(yīng)有防“三滲”性能(滲水、滲碳、滲離子) B.底涂層應(yīng)具有耐蝕性和耐化學(xué)品性能 C.底涂層應(yīng)有良好的施工性能
A.25% B.35% C.45%