Before the sludge in a purifier is ejected,()

A、the oil feeding is stopped and replaced by admitting flushing water. B、the flushing water feeding is stopped and replaced by admitting oil. C、the feeding of dirty oil and flushing water is stopped. D、the feeding of dirty oil and flushing water is admitted

时间:2022-10-22 14:38:12 所属题库:船舶电气与船舶安全题库

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