According to the text, why are test flights most dangerous()
A: The plane may explode in the air.
B: The pilot may lose control of the plane.
C: The engines may be damaged.
D: Too much air may get into the plane.
A: The plane may explode in the air.
B: The pilot may lose control of the plane.
C: The engines may be damaged.
D: Too much air may get into the plane.
举一反三
- 智慧职教: The most useful sentence you may use on the plane is ____________.
- By doing the "tank test", the engineers can find out() A: the amount of air in the plane B: the strength of the plane structure C: the pressure inside and outside the plane D: the power of the airplane engines
- Which<br/>plane that axial surfaces of folds are parallel to? ____ A: plane<br/>AB B: plane<br/>AC C: plane<br/>BC D: anyone may be possible
- People _____ in air traffic control may monitor aircraft movement in control tower.
- “Board the plane” means _________ A: go out of the plane B: leave the plane C: enter the plane D: run away from the plane. E: C