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单选题
That portion of the systems which controls the position and movement of the rudder and rudder tabs. Includes items such as the rudder pedals, tab control wheel, cables, boosters, linkages, control surfaces, position indicators, etc., as applicable.
A
控制方向舵和方向舵襟翼位置和移动的系统部分。包括诸如方向舵踏板、襟翼控制轮、钢丝绳、减压器、链接件、控制面、位置指示器等相关部件（视具体情况而定）。
B
控制桨和桨翼位置和移动的系统部分。包括诸如桨踏板、襟翼控制轮、电缆、增压器、链接件、控制面、位置指示器等相关部件（视具体情况而定）。
C
控制方向舵和方向舵配平片位置和移动的系统部分，包括诸如方向舵踏板、配平片控制轮、钢索、助力器、连接件、操纵面、位置指示器等相关部件（视具体情况而定）。
答案解析
正确答案：C
相关知识点：
方向舵相关系统部件组成
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