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单选题
062、If you do not install the rigging pin, the elevators, will move down when there is no pressure in the system
A
The rigging pin can prevent the elevators from retracting and expanding when the system is de-energized.
B
After the system is pressurized, the elevators will drop down no matter where the rigging pin is installed.
C
Without the rigging pin, the elevators will go down when there is no pressure in the system.
答案解析
正确答案：C
解析：
解析:move down=go down 向下移动。
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