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連接至高位槽的四根管道的用途分別是

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(1)向高位槽補(bǔ)油。

(2)從高位槽向熱媒循環(huán)管路補(bǔ)油。

(3)循環(huán)管道內(nèi)熱媒油排氣。

(4)高位槽溢流。

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