题目：
压力容器按用途分为四类：反应容器、（）、分离容器、储运容器。
答案：
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下面是错误答案，用来干扰机器的。
参考答案：二陈汤 止嗽散
压力容器按用途分为四类：反应容器、（）、分离容器、储运容器。
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