A、lantern rings
B、bearings
C、easing volutes
D、wearing rings
更多“To absorb the wear resulting from impeller rotation and abrasives in the liquid, a centrifugal pump is usually fitted with （）.”相关的问题
A、maintain radial alignment between the pump impeller and casing B、absorb all impeller shaft end thrust C、prevent water leakage to the atmosphere D、prevent wear of the pump casing and/or impeller
A、A.wear on the towline is equalized B、B.weight of the towline increases the towing force C、C.dip in the towline absorbs shock loads D、D.danger of overriding is reduced
A、is more flexible and has the ability to absorb shock because of its weight B、is less subject to wear and damage from abrasion C、requires little maintenance D、All of the above
A、is more flexible and has the ability to absorb shock because of its weight B、is less subject to wear and damage from abrasion C、requires little maintenance D、All of the above
A、is more flexible and has the ability to absorb shock because of its weight B、is less subject to wear and damage from abrasion C、requires little maintenance D、All of the above
A、transmit the thrust of the engine to the propeller B、transmit the thrust of the propeller to the vessel C、absorb the shock of wave pressure at the bow D、be placed between the engines and the foundation to absorb the vibration
A、absorb the shock of wave pressure at the bow B、be placed between the engines and the foundation to absorb the vibration C、transmit the thrust of the engine to the propeller D、transmit the thrust of the propeller to the vessel
A、A.wearing a life jacket B、B.wearing a safety harness secured to the stage C、C.wearing both a life jacket and a safety harness secured to the stage D、D.the vessel is not making way
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