在四个不同容器中,不同条件下进行合成氨反应。方程式N2(g)+3H2(g)2NH3(g,根据在相同时间内测定的结果判断生成氨的速率最快的是
It’s high time you had your hair cut ; it’s getting _______ .
My friend showed me round the town, ______ was very kind of him.
They use computers to keep the traffic _______ smoothly.
If you leave the club, you will not be_____back in .
What I need is_____ book that contains ______ABC of oil painting.