下列关于尾矿的说法,正确的是(  )。

下列关于尾矿的说法,正确的是(  )。A.尾矿是指选矿后残剩的无用矸石 B.尾矿中有一部分是今后可能再利用的有用矿石 C.尾矿是一些石渣,堆放占地,但是无害 D

查看答案

防水混凝土施工期间应将地下水位降至防水工程底板垫层(  )以下。

防水混凝土施工期间应将地下水位降至防水工程底板垫层(  )以下。A.200mm B.300mm C.500mm D.600mm

查看答案

The passage is basically a________.

The passage is basically a________.A.biography of John Paul Jones B.criticism of

查看答案

根据下面内容,回答题: There has been, in history, a man who was swall

根据下面内容,回答题: There has been, in history, a man who was swallowed by a whale and

查看答案

I wouldn't get so angry if you ________ more work done.

I wouldn't get so angry if you ________ more work done.A.get B.got C.will get D

查看答案