M<sub>R</sub>图必须包住M图,才能保证梁的()。
A、正截面抗弯承载力
B、斜截面抗弯承载力
C、斜截面抗剪承载力
D、正斜截面抗弯承载力
A、正截面抗弯承载力
B、斜截面抗弯承载力
C、斜截面抗剪承载力
D、正斜截面抗弯承载力
A、Δ<sub>rsub>H<sub>msub>=Δ<sub>rsub>G<sub>msub> B、Δ<sub>rsub>H<sub>msub>〉Δ<sub>rsub>G<sub>msub> C、Δ<sub>rsub>H<sub>msub>〈Δ<sub>rsub>G<sub>msub> D、三种均可能
A、Δ<sub>rsub>H<sub>msub>=Δ<sub>rsub>G<sub>msub> B、Δ<sub>rsub>H<sub>msub>>Δ<sub>rsub>G<sub>msub> C、Δ<sub>rsub>H<sub>msub><Δ<sub>rsub>G<sub>msub> D、三种均可能
A、Δ<sub>rsub>Hθ<sub>msub>〉0,Δ<sub>rsub>Sθ<sub>msub>〉0 B、Δ<sub>rsub>Hθ<sub>msub>〉0,Δ<sub>rsub>Sθ<sub>msub>〈0 C、Δ<sub>rsub>Hθ<sub>msub>〈0,Δ<sub>rsub>Sθ<sub>msub>〈0 D、Δ<sub>rsub>Hθ<sub>msub>〈0,Δ<sub>rsub>Sθ<sub>msub>〉0
A、M<sub>Rsub>/M<sub>Ssub>≥1.0 B、M<sub>Rsub>/M<sub>Ssub>≥1.1 C、M<sub>Rsub>/M<sub>Ssub>≥1.2 D、M<sub>Rsub>/M<sub>Ssub>≥1.25
A、Δ<sub>rsub>Hθ<sub>msub>〈0,Δ<sub>rsub>Sθ<sub>msub>〈0 B、Δ<sub>rsub>Hθ<sub>msub>〉0,Δ<sub>rsub>Sθ<sub>msub>〉0 C、Δ<sub>rsub>Hθ<sub>msub>〈0,Δ<sub>rsub>Sθ<sub>msub>〉0 D、Δ<sub>rsub>Hθ<sub>msub>〉0,Δ<sub>rsub>Sθ<sub>msub>〈0
A、r<sub>1sub>=r<sub>2sub>=0,L<sub>1sub>=L<sub>2sub>=M=0 B、r<sub>1sub>=r<sub>2sub>=0,L<sub>1sub>=L<sub>2sub>=M=∞ C、r<sub>1sub>=r<sub>2sub>=∞,L<sub>1sub>=L<sub>2sub>=M=0 D、r<sub>1sub>=r<sub>2sub>=∞,L<sub>1sub>=L<sub>2sub>=M=∞
A、在①下,Q<sub>Rsub>=TΔ<sub>rsub>S<sub>msub>=nFT(∂E/∂T)<sub>psub> B、在①下,Q<sub>Rsub>=Q<sub>Psub>=Δ<sub>rsub>H<sub>msub> C、在②下,Q<sub>Rsub>=Δ<sub>rsub>H<sub>msub>-W’=Δ<sub>rsub>H<sub>msub>+nFE’(E’为实际工作电压) D、在③下,Q<sub>Rsub>=Δ<sub>rsub>H<sub>msub>
A、Δ<sub>rsub>H<sub>msub> B、TΔ<sub>rsub>S<sub>msub> C、Δ<sub>rsub>H<sub>msub>-TΔ<sub>rsub>S<sub>msub> D、0
A、图示传动轴,已知主动轮的转矩M<sub>Asub>=30kN·m,从动轮的转矩分别为M<sub>Bsub>=15kN·m,M<sub>Csub>=10kN·m,M<sub>Dsub>=5kN·m。r /> 试作轴的扭矩图;传动轴上主动轮和从动轮如何安置最合理?r /> mg src="https://img.ppkao.com/2019-04/wanxiaokui/2019041416303175828.jpg" />