Pressure in an operating hydraulic system is developed （）.<br>A:only by the pump as its primary function<br>B:by resistance to the fluid flow through the system<br>C:by the thermal input to the systems fluid<br>D:solely by the charge applied by the accumulators

Pressure in an operating hydraulic system is developed （）.
A:only by the pump as its primary function
B:by resistance to the fluid flow through the system
C:by the thermal input to the systems fluid
D:solely by the charge applied by the accumulators

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