单项选择题
A.β=37.5>μ1μ2[β]=37.4,略超限 B.β=13.75<μ1μ2[β]=28.8,满足 C.β=13.75<μ1μ2[β]=37.4,满足 D.β=37.5>μ1μ2[β]=28.8,超限
A.32.55kN*m/m B.8.97kN*m/m C.14.47kN*m/m D.35.0kN*m/m
A.0.612;0.504 B.0.85;0.80 C.0.80;0.70 D.0.612;0.70