题目内容

氯化钠注射液属于胶体溶液。（）

A. 对
B. 错

查看答案

搜索结果不匹配？点我反馈

更多问题

胶体分散系的粒子直径范围是（）。

A. 1-100nm
B. ＜1nm
C. ＞100nm
D. 1-10nm

This is one of the largest bridges that______on this river.

A. is ever built
B. has ever been built
C. was ever built
D. has ever built

By the time you get there tomorrow, they_____for beijing.

A. will have left
B. are leaving
C. will leave
D. are to leave

I ______(write) a book at the moment.