1648. 在夜间操作期间,确认面板上的灯是暗亮的。

within night operation, make sure the panel lights are dim.

During night operation, make sure the panel lights are bright.

During night operation, make sure the panel lights are dim.

正确答案：C

设备系统操作理论翻译

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1715. 字母数字标识符是标识某物的字母和数字的组合。

1714. Contamination, both particulate and chemical, is detrimental to the performance and life of components in the aircraft hydraulic system

1713. 结合导航信息以计算飞机地理位置的系统部分,包括航道计算机等。

1712. Get access to the control unit through the opening in the side of the tank

1711. Stabilizers The horizontal and vertical stabilizers include the structure of the elevator and rudder

1710. Use torque wrench tighten the nut (with hand plus 18)

1709. Such wires and cables shall be capable of being connected to the ground network of the aircraft electrical system

1708. Polish the surface with a soft cloth until it becomes shiny

1707. Do not loosen the nut to align it

1706. 适航部分必须规定每个强制更换时间