A.應(yīng)當(dāng)多澆水B.應(yīng)當(dāng)適當(dāng)澆水C.應(yīng)當(dāng)少量澆水D.不得澆水
A.70%B.80%C.90%D.75%
A.砂漿飽滿B.上下錯縫C.對孔錯縫D.接槎可靠