A giat jet files very fast and very highly(改为high) it flies at an altitude of 13000 metres and on(改为at) a speed of 900 kilometres per hour time (去掉time)
Is there any dangerous(改为danger) that the jet's engines will fail in fact the plane appears to be very safely (改为safe)on each plane there are twice as many engines as the jet need (改为needs) If two engines fail on(加上the) same side the plane can stil use its other engines to land there are also mechanical pilots to take charge(加上of) it if the human pilots mustn't (改为can't)fly the plane
I want to see the(改为a) gaint jet自己按照改错符号写一遍吧.