电渗析膜与离子交换树脂在离子交换过程中的作用有何异同?
参考答案:
离子交换树脂的作用机理是树脂与溶液中的离子之间的交换反应,而离子交换膜是对溶液中的离子具有选择透过特性。
根据要求完成下列试题。
1. 她要么在家里,要么在学校。(翻译)
She ______ stays at home ______ stays at school.
2. 他为他的儿子而感到自豪。(翻译)
He is ______ ______ his son.
3. Jenny has never been to Guiyang ,______ ______?(构成反意疑问句)
4. I do well in English.(改同意句)
I am _____ _____ English.
5. It's very delicious food.(改为感叹句)
_____ ______ the food is!
6. Please open the door!(改为否定句)
______________________.
7. My friends go home once a week.(对划线部分提问)
_____ ______ do your friends go home?
8. He did his homework last night.(改为一般疑问句)
_____ he _____ his homework last night?
在多口井连通的大溶腔生产区,由于卤水比重分异而存在岩盐未溶死角,在溶腔边缘以内浓卤富集区或边缘以外岩盐未溶死角钻补救井,造成补救井直接与多井组连通的一种开采方法。称为大溶腔补救井连通开采法。()