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单选题
系统的该部分是用来消除或防止在螺旋桨上结冰。
A
That portion of the system is used to eliminate or prevent the
formation of ice on propellers.
B
The function of that part of the system is to decelerate or prevent the deformation of ice on propellers.
C
The usage of the system portion is to accelerate or facilitate the formation of ice on propellers.
答案解析
正确答案：A
相关知识点：
系统防螺旋桨结冰考点
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