How are hydraulic actuators operated?
A. By hand wheels
B. By an air signal
C. By an electrical motor
D. By fluid pressure
A. Incorrect. Hydraulic actuators are operated by fluid pressure.
B. Incorrect. Hydraulic actuators are operated by fluid pressure.
C. Incorrect. Hydraulic actuators are operated by fluid pressure.
D. Correct. Hydraulic actuators are operated by fluid pressure.
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