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单选题
供压时，人员和设备要远离所有操纵面和起落架。
A
When hydraulic power is supplied, keep persons and equipment away from all control surfaces and landing gear.
B
When supplying power to the hydraulic system, persons and equipment should be away from all control surfaces and landing gear.
C
Persons and equipment shall be away from all hydraulic system control surfaces and landing gear when supply pressure.
答案解析
正确答案：A
相关知识点：
供压时远离，操纵面起落架
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