单选题If you were operating a centrifugal water service pump with worn wearing rings, the （）.Apump would be very noisyBpump would vibrate excessivelyCpump would develop insufficient flowDstuffing box would leak excessively
单选题
If you were operating a centrifugal water service pump with worn wearing rings, the （）.
A
pump would be very noisy
B
pump would vibrate excessively
C
pump would develop insufficient flow
D
stuffing box would leak excessively
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