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.
相关试题
-
If you do not install the rigging pin, the elevators will move down when there is no pressure in the
-
ipe in the middle of the lake,with one end of the pipe near the bottom and the other end in the air
-
ipe in the middle of the lake,with one end of the pipe near the bottom and the other end in the air
-
ipe in the middle of the lake,with one end of the pipe near the bottom and the other end in the air
-
ipe in the middle of the lake,with one end of the pipe near the bottom and the other end in the air