I'll work _____ I can.A. so hard as B. a

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问题选择题

I'll work _____ I can.

A. so hard as
B. as hard as
C. so hardly as
D. as hardly as

答案

答案：B

填空题

质量比为14：15的N₂和NO混合，则混合气体中N₂和NO的物质的量之比为______，氮原子和氧原子的个数比为______，该混合气体的平均摩尔质量为______．

问答题简答题

简述酶反应器的主要类型和特点。