Severe wind shear is a rapid change in wind direction or speed resulting in a change in airspeed greater than ( ) knots per hour or a change in vertical velocity greater than ( ) meters per minute.
A.10;100 B.15150 C.20200 D.25200正确答案B
Severe wind shear is a rapid change in wind direction or speed resulting in a change in airspeed greater than ( ) knots per hour or a change in vertical velocity greater than ( ) meters per minute.
A.10;100 B.15150 C.20200 D.25200正确答案B
