单选题

Braking refers to that portion of the system which is used to decrease rundown time or stop propeller rotation during engine power-off conditions.

A制动是指系统中用来减少发动机磨损时间或停止螺旋桨旋转的部分；

B制动是指在发动机断电状态下用于缩短发动机熄火时间或停止螺旋桨旋转的系统；

C制动是指系统中用来减少发动机熄火时间或停止螺旋桨旋转的部分；

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正确答案：A （备注：此答案有误）

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