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单选题
898、方向舵是一个被固定在垂直安定面上的可移动的翼面,它用于偏航控制。
A
The rudder is a removable airfoil which is attached to the vertical stabilizer and is used for yaw control.
B
The rudder is a replaceable airfoil which is mounted to the vertical fin and is used for yaw control.
C
The rudder is a removable wing which is fixed tote vertical stabilizer and is used for pitch control.
答案解析
正确答案：A
解析：
解析:注释: yaw 偏航;pitch 俯仰。removable 可移动的; replaceable 可更换的。
相关知识点：
方向舵可动，装垂安定面用于偏航
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