If you were operating a centrifugal water service pump with worn wearing rings, the （）.<br>A:pump would be very noisy<br>B:pump would vibrate excessively<br>C:pump would develop insufficient flow<br>D:stuffing box would leak excessively

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

出自：海船船员证

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