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单选题
控制部分控制螺旋桨的桨距，但不包括任何与螺旋桨组件一起旋转的部件。
A
The control section controls the pitch of the propeller blades, but does not include any parts which rotate with the propeller assembly.
B
The control section controls the distance of the propeller blades, but does not include any parts which rotate with the propeller assembly.
C
The control section controls the space between the propeller blades, but does not include any parts which rotate with the propeller assembly.
答案解析
正确答案：A
