试题详情

If you do not install the rigging pin, the elevators will move down when there is no pressure in the system.

A After the system is pressurized, the elevators will drop down no matter where the rigging pin is installed.

B Without the rigging pin, the elevators will go down when there is no pressure in the system.

C The rigging pin can prevent the elevators from retracting and expanding when the system is de-energized.