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单选题
869. That portion of the system which controls the pitch of the propeller blades Includes items such as governor, synchronizers, switches, cables, levers, etc Does not include any parts which rotate with the propeller assembly
A
系统中控制螺旋桨桨距的部分。包括加速器,同步器,电门,钢索,杆等。不包括随螺旋桨组件运动的任何零件
B
系统中控制螺旋桨桨叶角的部分。包括调速器,同步器,电门,钢索,杆等。不包括随螺旋桨组件随动的任何零件
C
系统中控制螺旋桨桨距的部分。包括调速器,同步器,电门,钢索,杆等。不包括随螺旋桨组件旋转的任何零件
答案解析
正确答案：C
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