原水水质差异、要求达到的水质标准等因素影响给了水处理工艺的选择。
查看答案
离子交换主要是对水中的钙、镁离子的去除，多用在水的软化和脱盐等领域。
A. 对
B. 错
To be up to the job, you need to go through ________ trainings in expertise.
He has been a ________ to the pop star’s charm.
As the best player in the team, he is ________ to its struggle for the national champion.
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