【单选题】【消耗次数：1】
以下列管式换热器中，成本最高的是（ ）。
①
U形管式换热器
②
浮头式换热器
③
具有补偿圈的固定管板式换热器
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相关题目
【单选题】
在化工厂中，换热器的投资约占到了整个投资的40%，其中列管式换热器使用最为普遍。以下各项中不属于列管式换热器的是（ ）。
①
固定管板式换热器
②
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填料函式换热器
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