As mentioned in the last paragraph，a wind tunnel can be used to find out____.
A: how fast a plane can rise
B: how smooth a plane’s surface is
C: how a plane lands in a strong wind
D: how a plane drops at a low height
A: how fast a plane can rise
B: how smooth a plane’s surface is
C: how a plane lands in a strong wind
D: how a plane drops at a low height
举一反三
- The report showed us very (clear) _________ how the plane crashed.
- 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
- How is an object oriented relative to the image plane to create: a multiview? an axonometric pictorial?
- How did the narrator arrive in America? A: By plane B: By boat C: By bus D: By car
- How will the woman probably get to the branch office A: By plane B: By train C: By bus D: By car