试题与答案

对于往复式压缩机,空气冷却器的冷却管束采用(),增大(),提高()。

题型:填空题

题目:

对于往复式压缩机,空气冷却器的冷却管束采用(),增大(),提高()。

答案:

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参考答案:1、效益原则。即应全面综合考虑社会、经济和环境生态三方面的效益;2、市场调节与计划控制相结合;3、动态原则。土地利用规划应随社会经济环境的变化而作相应的调整,旧有的规划在一定时间内有指导作用...

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