单选题:下列石材中,构造致密、强度高、密度大、吸水率极低、质地坚硬、耐磨,为酸性石材的是(  )。

题目内容:
下列石材中,构造致密、强度高、密度大、吸水率极低、质地坚硬、耐磨,为酸性石材的是(  )。 A.花岗石
B.大理石
C.石灰岩
D.白云岩

参考答案:
答案解析:

《水污染防治法》规定,排放水污染物超过国家或者地方规定的水污染物排放标准,由县级以上人民政府环境保护主管部门按照权限责令

《水污染防治法》规定,排放水污染物超过国家或者地方规定的水污染物排放标准,由县级以上人民政府环境保护主管部门按照权限责令限期治理,限期治理的期限最长不超过( )

查看答案

Depending on where the occur, hurricanes have_______________

Depending on where the occur, hurricanes have________________. A.inland flooding

查看答案

Some Unusual Celebrations  Some holidays are well-known all

Some Unusual CelebrationsSome holidays are well-known all around the world. Amon

查看答案

In the last paragraph, "it's a mess" means

In the last paragraph, "it's a mess" meansA.it's small. B.it's dirty. C.it's pro

查看答案