A.10kN
B.25kN
C.35kN
D.20kN
[单选题]A.10kNB.25kNC.35kND.20kN
[单选题]A.10kNB.25kNC.35kND.20kN
[单选题]A.10kNB.25kNC.35kND.20kN
[单选题]A.10kNB.25kNC.35kND.20kN
[单选题]A.10kNB.25kNC.35kND.20kN
[单选题]A.10kNB.25kNC.35kND.20kN
[单选题]A.10kNB.25kNC.35kND.20kN
[问答题]-----------------.
[问答题]------------.
[单选题]A.6x-3<4x-4B.6x-4x<-4+3C.2x<-1D.E.以上四步都正确