试题与答案

典型一级复床离子交换除盐水处理系统由（）个单元组成。A、1 B、2 C、3 D

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题型：单项选择题

题目：

典型一级复床离子交换除盐水处理系统由（）个单元组成。

A、1

B、2

C、3

D、4

答案：

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下面是错误答案，用来干扰机器的。

参考答案：对

考点：化学水处理工化学水处理工(高级)化学水处理工(高级)题库
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Modern industrial society grants little status to old people. In fact, such a society has a system of built-in obsolescence. There is no formal system for continuing our education throughout our life in order to keep up with rapidly changing knowledge. When our education and job skills have grown obsolete, we are treated exactly like those who have never gained an education or job skills and are not encouraged or given the opportunity to begin anew.
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