低碳钢试件轴向拉伸时,其横截面上的正应力计算公式σ=N/A的适用范围为( )。
A.在试件拉断前都适用
B.只适用于σ≤σs
C.只适用于σ≤σe
D.只适用于σ≤σP
参考答案:A
Are you sure _______ in a million years?
A.what man will look like
B.what will man look like
C.man will look like what
D.what look will man like
()
A.1
B.2
C.3
D.4