单项选择题

A.3h0,下列情况可能出现受压破坏的是(
B.已知C.174.24.96:6088/Latex/latex.action?latex=QV9zXic%3D'
D.当E.174.24.96:6088/Latex/latex.action?latex=QV9zXic%3D'
F.174.24.96:6088/Latex/latex.action?latex=QV9zXic%3D'