单选题 1分

Before performing any maintenance on a hydraulic system storing energy in an accumulator, you should...

Before performing any maintenance on a hydraulic system storing energy in an accumulator, you should___.
  • A.operated the machine until it reaches normal temperature
  • B.pressurize the system to test for leaks
  • C.bleed off all pressure within the system
  • D.disconnect the pump pressure control switch

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