A.filled
B.evacuated
C.compressed
D.charged
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A.greater
B.smaller
C.better
D.worse
A.hydraulic head
B.static head
C.heat energy
D.steam
A.a liquid
B.a pressure
C.a temperature
D.none of the above
A.a priming device
B.a discharge branch
C.a filter
D.a suction valve
A.pump
B.engine
C.turbine
D.boiler
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