世界一级方程式锦标赛的赛车使用()变速箱?
A.手动
B.自动
C.手自一体
参考答案:C
_____ achievement, last week’s ministerial meeting of the environment here earned a low, though not a failing grade.
A.In addition to
B.In favor of
C.In terms of
D.As a result of
最大弯曲正应力计算公式为()。
A.σ=N/A
B.σmaB=MmaB/Wz
C.σ=M.y/Iz
D.σ=E.ε