题目内容
Trailing edge (TE) flaps and leading edge (LE) flaps and slats (LE devices) are parts of high lift devices receiving power from hydraulic system B.
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Roll control is accomplished by a hydraulically powered rudder and electrically flight spoiler.
Roll control is provided by the ailerons about the airplane’s vertical axis from nose to tail.
If the ailerons or spoilers are not movable, the Captain and the First Officer can use the force exerted to their respective control wheels to find outwhether ailerons or spoilers is available and which control wheel, Captain’s or First Officer’s is functional normally too.
某中学一次数学考试，王明是唯一得满分的学生，当老师宣布考试成绩时，王明内 心非常高兴，却表现出若无其事的样子，这反映了青少年情绪发展具有（）。
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