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Lesson 22 拓展Fill in the blanks with what you have heard.[音频]1.The controller reminds Finnair 2115 to taxi with caution because a 1 is 2 to the 32.SIA107 has finished 4 10 minutes ago and the de-icer trucks has left. They requests 5 to meet their slot time of 6 , but the controller allocates them a new slot time of 7 and tells the crew to expect 8 because 9 are building up on 11_at the end of the taxiway.Finnair 2115 is taxiing slowly to the intersection and they see 10 is just moving off and the controller instructs them to taxi 12 and be careful about13 and14 reported.

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Lesson 6 拓展[音频]Listen and fill in the blanks with what you have heard.BAW937 is instructed to taxi to holding point ____1___runway ____2__via taxiway ____3__. .After reaching the holding point, BAW937 is told to maintain position to wait for the ____4_______to ____5___runnway ___6___. After a while, he is ordered to ____7____and prepare for departure . But very soon the controller cancels line up and asks him to hold position because the Airbus 320 seems to have a problem and has ___8_____on the runway.

【单选题】依据力的可传性原理,下列说法正确的是。

A. 力可以沿作用线移动到物体内的任意一点
B. 力可以沿作用线移动到任何一点
C. 力不可以沿作用线移动
D. 力可以沿作用线移动到刚体上的任意一点

【单选题】约束反力的方向沿着中心线而背离被约束物体,所指约束模型是。

A. 柔性约束
B. 光滑面约束
C. 光滑铰链约束
D. 固定端约束

【单选题】两个不平行的平面力,其大小相等并与其合力一样大,此二力之间的夹角必为。

A. 0°
B. 90°
C. 120°
D. 180°

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