问题
单项选择题
可以使固液及液液分离的方法( )
A．水提醇沉法
B．离心分离法
C．大孔树脂法
D．膜分离法
E．吸附澄清法
答案
参考答案：B
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可以使固液及液液分离的方法( )
A．水提醇沉法
B．离心分离法
C．大孔树脂法
D．膜分离法
E．吸附澄清法
参考答案：B
| 从方框中选择适当的句子完成对话，其中有两项为多余选项 | |
Kevin: My home is the farthest from our school, so I often go there by bus. Alice: Really? 2 Kevin: Yes,I do.I think it's the best way to get to school. Alice: What about your brother, Kevin? Kevin: 3 Alice: Really? He is too great ! 4 Kevin: No, he doesn't. He goes to work by taxi. Alice: Oh ,it's the most expensive way. Kevin: 5 |