在由水电离出的c(OH
) = 1×1013mol·L－1的溶液中，下列各组离子一定不能大量共存的是
| A．Na+、NH4+、NO3、CO32 |
| B．K+ 、I、Mg2+、SO42－ |
| C．Na+、Ba2+、OH、NO3 |
| D．C1、K+ 、NO3、SO32 |
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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