In a radial piston pump, reversal and control of fluid flow are accomplished by moving the （）.<br>A:central valve<br>B:radial plunger<br>C:floating ring<br>D:cylinder body

In a radial piston pump, reversal and control of fluid flow are accomplished by moving the （）.
A:central valve
B:radial plunger
C:floating ring
D:cylinder body

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