A.9.5
B.10.4
C.12.3
D.13.1
[单选题]A.[P]=165kNB.[P]=181kNC.[P]=346kND.[P]=420kN
[单选题]A.[F]=A[σ]B.[F]=2A[σ]C.[F]=34[σ]D.[F]=44[σ]
[单选题]A.[F]=A[σ]B.[F]=2A[σ]C.[F]=34[σ]D.[F]=44[σ]
[单选题]A.[P]=165kNB.[P]=181kNC.[P]=346kND.[P]=420kN
[单选题]A.9.5B.10.4C.12.3D.13.1
[单选题]A.9.5B.10.4C.12.3D.13.1
[单选题]A.-Fl/8B.-Fl/9C.Fl/8D.Fl/9