To absorb the wear resulting from impeller rotation and abrasives in the liquid, a centrifugal pump is usually fitted with （）.<br>A:lantern rings<br>B:bearings<br>C:easing volutes<br>D:wearing rings

To absorb the wear resulting from impeller rotation and abrasives in the liquid, a centrifugal pump is usually fitted with （）.
A:lantern rings
B:bearings
C:easing volutes
D:wearing rings

出自：海船船员证

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