單項(xiàng)選擇題The volute of centrifugal pump also acts as a diffuser converting （）into pressure head.
A.mechanical energy
B.heat energy
C.potential energy
D.kinetic head
您可能感興趣的試卷
你可能感興趣的試題
1.單項(xiàng)選擇題A centrifugal impeller consists of a number of vanes curving （） from the direction of rotation.
A.backwards
B.forwards
C.upward
D.downwards
2.單項(xiàng)選擇題When installed for bilge pumping or ballast duty, centrifugal pumps require a （） to remove air from the suction pipe.
A.air chamber
B.head lank
C.primer
D.prime mover
最新試題
The main purpose of port State control is not to（）
題型：?jiǎn)雾?xiàng)選擇題
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）
題型：?jiǎn)雾?xiàng)選擇題
The additional mark （）in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.
題型：?jiǎn)雾?xiàng)選擇題
（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.
題型：?jiǎn)雾?xiàng)選擇題
Flame failure in an automatically fired auxiliary boiler can from a/an （）
題型：?jiǎn)雾?xiàng)選擇題