With respect to centrifugal pump impellers, which of the following descriptions represents the correct centrifugal pump classification? （）<br>A:Single stage or multistage<br>B:High pressure or low pressure<br>C:Open or close coupled<br>D:Horizontal or vertical

With respect to centrifugal pump impellers, which of the following descriptions represents the correct centrifugal pump classification? （）
A:Single stage or multistage
B:High pressure or low pressure
C:Open or close coupled
D:Horizontal or vertical

出自：海船船员证

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