单选题 1分

Which of the following is wrong about the lubricating oil system?

  • A. There are magnetic filters in the suction line, main suction filters and a differential pressure alarms.
  • B. All the filters could both be automatically cleaned or one hand-cleaned and one automatically
  • C. The filter is automatically back flushed with air, when the differential pressure exceeds a pre-set value.
  • D. The displaced oil could be used again after filtered.

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