Man: You are late again, Miss Smith. Don't you have a watch or something? Woman: Yes, I thought that I had set the alarm clock for seven o'clock, but it rang an hour later. What does the woman mean?
【单选题】The thrust that normally controlled by a hydraulic system varying the propeller pitch angle in direct driven diesel propulsion is denoted as _____.
【简答题】In many airplanes, the elevator is controlled by two cables: a “down” cable and an “up” cable. Normally, a break or disconnect in only one of these cables will not result in a total loss of elevator c...