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高一各科问题总汇。

答案:1  悬赏:10  手机版
解决时间 2021-04-29 05:42
  • 提问者网友:寂寞撕碎了回忆
  • 2021-04-28 05:48

化学: V2O3和V2O5按不同物质的量之比混合可按计量完全反应,今欲制备V8O17,则V2O3与V2O5的物质的量之比应为:_______

由Co2.H2,和CO组成的混合气体在同温同压下与N2的密度相同,则该混合气体中CO2、H2和CO体积之比为 _________

实验常用98%(d=1.84g/ml)的浓H2SO4配制1:4的稀H2SO4。此稀H2SO4的密度为1.23g/ml,则该物质的量浓度为: _________

生物:

一个由200个碱基对构成的DNA分子,可能的碱基排列顺序有多少种

一定要告诉我算法

英语:

The train ____ she was traveling was late.

A which B. where C. on which D in that.

This is the hotel _____ last month.

A. which they stayed B at that they stayed C where they stayed at D. where there stayed

The factory ______ we'll visit next week is not far from here.

A.where B.to which C.which D in which

Li Ming ______ to the concert enjoyed it very much.

A. I went with B. with whom I went. C.with who I went D. I went with him.

另外告诉我which的用法。 比如in which to which for which by which 等等。

最佳答案
  • 五星知识达人网友:等灯
  • 2021-04-28 06:57

- =


勤奋的孩子、



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