下列物质中的杂质(括号内的物质)除去时，所使用的试剂和主要操作都正确的是
| 选项 |
物质 |
使用的试剂 |
主要操作 |
| A |
乙醇(水) |
金属钠 |
过滤 |
| B |
乙酸乙酯(乙酸) |
饱和碳酸钠溶液 |
振荡、分液 |
| C |
苯(苯酚) |
浓溴水 |
过滤 |
| D |
乙烷(乙烯) |
酸性高锰酸钾溶液 |
洗气 |
相关试题
Now that we’ve discussed our problem, are people happy with the decisions _______? 
| A．taking | B．take | C．taken | D．to take |
Everybody was touched _____ words after they heard her moving story. 
| A．beyond | B．without | C．of | D．in |
One of the most important questions they had to consider was _____ of public health. 
| A．what | B．this |
C．that | D．which |
Encourage your children to try new things, but try not to ___ them too hard.
| A．draw | B．strike | C．rush | D．push |
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