工芸基礎知識（選択問題）20180902
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圧縮冷凍装置において、冷媒が高圧から低圧に変わるのは部品を境目としている。 A．電磁弁 B．リコイルヒーター C．膨張弁 D．背圧弁
膨張弁#こちらで迅速に返信#
ガンはCです
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