发布时间:2025-01-31 20:27:57
制冷中级资格证一般考以下两大点:
1、理论考一些制冷基础知识,比如制冷设备知识、制冷应用、制冷原理、一些简单的设计及制冷设备选型等等;
2、实践考一些就是最简单的动手操作,比如压缩机的拆装、过滤器的拆装、制冷系统的连接、检漏、抽真空加氟利昂等等。
请问哪里有卖气体减压阀压力从005mpa50kpa减到0005mpa5kpa流量每小时815立方 或525都可以
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