To absorb the wear resulting from impeller rotation and

单项选择题

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

相关考题

单项选择题 If the capacity of a centrifugal pump decreases gradually over a long period of time, you should replace the （）.

单项选择题 Distilled water from an evaporator may be discharged into a potable water tank （）.

单项选择题 If a centrifugal pump vibrates and is noisy when operating, the cause could be （）.

经营许可证号：湘B2-20140064

船舶辅助机械