实验是化学研究的基础，关于下列各实验装置图的叙述中，错误的是
③
| A．装置①当止水夹关闭，而后从长颈漏斗注水操作可用于检查该装置的气密性 |
| B．装置②可用于除去CO中混有的少量CO2 |
| C．装置③可用于从海水中得到淡水 |
| D．装置④可用于排空气收集CO |
相关试题
—— 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 |
They use computers to keep the traffic _______ smoothly.
| A．being run | B．run | C．to run | D．running |
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