NO和CO都是汽车尾气里的有害物质，它们能缓慢地起反应生成N2和CO2，下列对此反应的叙述正确的是（ ）
| A．使用催化剂不能改变反应速率 |
| B．降低压强能使反应速率加快 |
| C．改变压强对反应速率没有影响 |
| D．升高温度能加快反应速率 |
相关试题
I can’t leave. She told me that I ______ stay here until she comes back.
| A．can | B．must | C．will | D．may |
—— Do you mind my opening the window? It’s a bit hot in here.
—— ______ , as a matter of fact
| A．Go ahead | B．Yes, my pleasure |
C．Yes, I do | D．Come on |
It’s high time you had your hair cut ; it’s getting _______ . 
| A．too much long | B．much too long |
C．long too much | D．too long much |
My friend showed me round the town, ______ was very kind of him. 
| A．which | B．that | C．where | D．it |
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