A、two or more impellers housed together in one casing and mounted on a single shaft
B、a single stepped impeller mounted in a progressively staged casing
C、a large radial clearance between the impeller and casing to prevent overheating due to
D、an increase in the discharge velocity of the liquid with a corresponding decrease in pressure through the stages
更多“A multistage centrifugal pump can be BEST described as having （）.”相关的问题
A、variable stroke pumps B、multistage pumps C、positive displacement pumps D、triple-ported pumps
A、variable stroke pumps B、multistage pumps C、positive displacement pumps D、triple-ported pumps
A、Single stage or multistage B、High pressure or low pressure C、Open or close coupled D、Horizontal or vertical
A、combined as part of the salt water feed heater B、the open area above the brine levels in the first and second stages C、combined as part of the distillate cooler D、another term used to describe the vapor feed heater
A、High pressure compressors are more efficient than low pressure compressors B、Mechanical efficiency divided by compressor efficiency will equal the overall efficiency of the compressor unit C、Two stage compressors are generally more efficient than single stage compressors D、The volumetric efficiency is decreased in multistage compressors
A、higher than the first stage feed-water temperature and absolute shell pressure B、lower than the first stage feed-water temperature and absolute shell pressure C、the same as the first stage feed-water temperature and absolute shell pressure D、not related to the feed-water temperature and absolute shell pressure
A、A675>A312>A13>A10>A5； B、A675>A312>A13>A5>A10； C、A675>A13>A10>A312>A5； D、A675>A13>A312>A10>A5； E、A13>A312>A675>A10>A5。
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