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【单选题】
当作动重力放起落架手柄时()
A.
液压安全活门被关断。
B.
务必将起落架控制手柄选择于放下位。
C.
会机动打开相应舱门和起落架的上锁机构。
D.
以上答案都不正确
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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】After the birth of my second child，I got a job at a restaurant.Having worked with an experienced 16for a few days，I was 17to wait tables on my own.All went 18that first week.When Saturday night came，I...
A.
repeated
B.
discovered
C.
corrected
D.
described