Fundamentals of Manufacturing Processes (Multiple Choice) 20181127

2018-11-27View Original

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0461 In the following operations of the refrigeration unit, ① adding refrigerant； ②Add lubricating oil ； ③Release air ； ④Airtightness test ； ⑤System evacuated ； ⑥The refrigerant is removed; a multi-channel discharge valve may be used for this purpose. A. ①③⑤⑥ B. ③④⑥ C. ③④⑤⑥ D③⑤⑥

Reply #22018-11-27

D~~~~~~~~~~~~~

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Fundamentals of Manufacturing Processes (Multiple Choice) 20181127

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