The amount of fluid delivered by a positive displacement pump can be regulated by （）.<br>A:throttling the pressure line<br>B:changing the speed of the driving rotor<br>C:either A or B<br>D:None of the above is tree

The amount of fluid delivered by a positive displacement pump can be regulated by （）.
A:throttling the pressure line
B:changing the speed of the driving rotor
C:either A or B
D:None of the above is tree

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