Air compressors are equipped with unloading systems for the purpose of（）.<br>A:removing all but the frictional load during starting<br>B:relieving intercoolers of high temperature buildups<br>C:providing high starting torque in the drive motor<br>D:seating valve plates during compressor shutdown

Air compressors are equipped with unloading systems for the purpose of（）.
A:removing all but the frictional load during starting
B:relieving intercoolers of high temperature buildups
C:providing high starting torque in the drive motor
D:seating valve plates during compressor shutdown

出自：海船船员证

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