1. The fuselage is not the central body of the airplane. (negative)
Is the fuselage the central body of the airplane? (interrogative)
2. We don't divide the aeroplane into five principal structural units. (negative)
Do you/we divide the aeroplane into five principal structural units? (interrogative)
3. The power plant doesn't provide power for flight. (negative)
Does the power plant provide power for flight? (interrogative)
4. The tail unit doesn't consist of two surfaces, vertical and horizontal. (negative)
Does the tail unit consist of two surfaces, vertical and horizontal? (interrogative)
5. The wing doesn't extend equally on each side of the fuselage. (negative)
Does the wing extend equally on each side of the fuselage? (interrogative)
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