Overheating of a hydraulic system may be a result of （）.<br>A:changing pump discharge pressure in response to normal load variations<br>B:a high oil level<br>C:incorrect fluid viscosity<br>D:continued slow re-circulation of the oil

Overheating of a hydraulic system may be a result of （）.
A:changing pump discharge pressure in response to normal load variations
B:a high oil level
C:incorrect fluid viscosity
D:continued slow re-circulation of the oil

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