问答题

常见的固化剂种类包括()。

A:水泥
B:石灰
C:粉煤灰
D:硅酸盐
此题为多项选择题。

你可能感兴趣的试题

单项选择题

The number of people present at the meeting () about 1000, a large number of whom experts () from abroad.

A.was; was
B.were; were
C.was ; were
D.were; was

垃圾渗滤液的主要来源有()。

A:降水
B:地表径流
C:地下水入渗
D:废物中的游离水
此题为多项选择题。