单选题Among the basic categories of equipment, which of the following is used to convert hydraulic energy into continuous rotary motion?（）AHydraulic pumpsBValveCHydraulic cylindersDHydraulic motors
单选题
Among the basic categories of equipment, which of the following is used to convert hydraulic energy into continuous rotary motion?（）
A
Hydraulic pumps
B
Valve
C
Hydraulic cylinders
D
Hydraulic motors
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