<table id="cvirc"><wbr id="cvirc"><ins id="cvirc"></ins></wbr></table>

<table id="cvirc"><menuitem id="cvirc"></menuitem></table>

單項選擇題

The centrifugal pump component responsible for converting the mechanical energy of the liquid being pumped, to that of kinetic energy is the （）.

A.electric motor
B.volute
C.impeller
D.diffusion nozzle

你可能感興趣的試題

單項選擇題

In a refrigeration system, foaming of the crankcase oil may cause the （）.

A.expansion valve to overfeed
B.compressor to knock
C.water regulating valve to fail
D.crankcase drains to plug

單項選擇題

Excessive scale formation in a distilling plant may result from （）.

A.poor distillate quality
B.reduced evaporator capacity
C.low brine concentration
D.improper vacuum regulation