在干燥环境下选用水泥时,应优先使用( )。 在干燥环境下选用水泥时,应优先使用( )。A.硅酸盐水泥 B.普通硅酸盐水泥 C.粉煤灰水泥 D.火山灰水泥 E.复合硅酸盐水泥 分类:公共英语五级 题型:填空题 查看答案
Mr Miller bought his house simply because the flat he used t Mr Miller bought his house simply because the flat he used to live in was tooex 分类:公共英语五级 题型:填空题 查看答案