【简答题】请将这句话The pinion gear is attached to the steering shaft. When you turn the steering wheel, the gear spins, moving the rack. The tie rod at each end of the rack connects to the steering arm on the spind...
【单选题】Borger Sullivan is an air traffic controller at one of the nation's largest airports. His job is uninteresting and tension-packed job because it means directing hundreds of jet airplanes to safe landi...