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单选题
In the description of the airplane＇s Instrument Panel, if installed, how the annunciator panel operates shall be explained.
A
A.描述飞机仪表板时，如果安装了信号通告面板，应说明其操作方式。
B
B.描述飞机仪表板时，如安装，应描述警告面板的运行方式。
C
C.描述飞机仪表板时，如果安装了通告台板，应说明其操作方式。
答案解析
正确答案：A
解析：
b｜建议A
相关知识点：
描述仪表板要说明通告板
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