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单选题
1038. 用于指示螺旋桨系统的操作或激活的部分。包括灯、电门等。
A
An operating or displaying part used to illuminate a blade, including a lamp, switch, etc.
B
The part used to indicate the operation or display of a blade, including a light, switch, etc.
C
That portion of the system used to indicate operation or activation of propeller systems. Includes items such as light, switches, etc.
答案解析
正确答案：C
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