对应于5.2%梯度的下滑角是多少？What is the glide angle corresponding with gradient of 5.2% ？
A.2.8°
B.3°
C.3.2°
正确答案是B
对应于5.2%梯度的下滑角是多少？What is the glide angle corresponding with gradient of 5.2% ？
A.2.8°
B.3°
C.3.2°
正确答案是B