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单选题
Deactivation/Reactivation procedures for circuits, systems, units, etc., shall be included. This is important because during maintenance, certain components may need to be deactivated for safety reasons or to prevent damage to the aircraft or equipment. It is also important to have instructions for reactivating these components once maintenance is complete to ensure that they are functioning properly and do not pose a risk to the safety of the aircraft or its occupants.
A
A.停用/重新启用电路、系统、组件等的程序应包括在内。这是因为在维护过程中，由于安全原因或为防止对飞机或设备造成损坏，某些部件可能需要停用。同样重要的是，一旦维护完成，需要有重新启用这些部件的说明，以确保它们正常运行，不会对飞机或机上设备的安全构成风险。
B
B.停用/重新启用电路、系统、组件等的程序应包括在内。这是因为在维护过程中，由于安全原因或为防止对飞机或设备造成损坏，某些部件可能需要停用。同样重要的是，一旦维护完成，需要有重新启用这些部件的说明，以确保它们工作正常，不会对飞机或机上人员的安全构成风险
C
C.停用/重新启用管路、系统、组件等的程序应包括在内。这是因为在维护过程中，由于安全原因或为防止对飞机或设备造成损坏，某些部件可能需要停用。同样重要的是，一旦维护完成，需要有重新启用这些部件的说明，以确保它们工作正常，不会对飞机或机上人员的安全构成风险
答案解析
正确答案：B
相关知识点：
维护要记停启程，确保安全无风险
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