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问题详情

When securing a flash-type evaporator for an extended period of time, you should （）.

A、fill the unit with saltwater

B、fill the unit with de-scaling compound

C、completely drain the unit

D、tightly seal the unit to exclude air

时间：2022-01-04 04:19 关键词：船舶辅助机械

答案解析

C

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