试比较如图所示杆件各段轴力的大小[img=359x100]1803be11ccb7373.png[/img] A: FNAB > FNBC > FNCD B: FNAB > FNCD >FNBC C: FNCD >FNBC > FNAB D: FNCD > FNAB > FNBC
试比较如图所示杆件各段轴力的大小[img=359x100]1803be11ccb7373.png[/img] A: FNAB > FNBC > FNCD B: FNAB > FNCD >FNBC C: FNCD >FNBC > FNAB D: FNCD > FNAB > FNBC
图示变截面杆,设AB段和BC段的轴力分别为FNAB和FNBC ,则下列结论中正确的是________。[img=194x60]1802f50df8a2aa0.jpg[/img] A: FNAB = 3kN,FNBC = –6kN B: FNAB = 3kN,FNBC = –9kN C: FNAB = 3kN,FNBC = 6kN D: FNAB = 3kN,FNBC = 9kN
图示变截面杆,设AB段和BC段的轴力分别为FNAB和FNBC ,则下列结论中正确的是________。[img=194x60]1802f50df8a2aa0.jpg[/img] A: FNAB = 3kN,FNBC = –6kN B: FNAB = 3kN,FNBC = –9kN C: FNAB = 3kN,FNBC = 6kN D: FNAB = 3kN,FNBC = 9kN
图示变截面杆,设AB段和BC段的轴力分别为FNAB和FNBC ,则下列结论中正确的是________。[img=194x60]17de93ecacc6d44.jpg[/img] A: FNAB = 3kN,FNBC = –6kN B: FNAB = 3kN,FNBC = –9kN C: FNAB = 3kN,FNBC = 6kN D: FNAB = 3kN,FNBC = 9kN
图示变截面杆,设AB段和BC段的轴力分别为FNAB和FNBC ,则下列结论中正确的是________。[img=194x60]17de93ecacc6d44.jpg[/img] A: FNAB = 3kN,FNBC = –6kN B: FNAB = 3kN,FNBC = –9kN C: FNAB = 3kN,FNBC = 6kN D: FNAB = 3kN,FNBC = 9kN
图示受拉直杆,其中AB段与BC段内的轴力及应力关系为()。 A: FNAB=FNBCσAB=σBC B: FNAB=FNBCσAB>;σBC C: FNAB=FNBCσAB<;σBC D: FNAB<;FNBCσAB<;σBC
图示受拉直杆,其中AB段与BC段内的轴力及应力关系为()。 A: FNAB=FNBCσAB=σBC B: FNAB=FNBCσAB>;σBC C: FNAB=FNBCσAB<;σBC D: FNAB<;FNBCσAB<;σBC
图示对称结构EI=常数,中点截面C及AB杆内力应满足:( )<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/8e9516cd08c149dc83cbd9f1cb580008.jpg"/> A: M=0,FQ 不等于0,FN =0,FNAB=0 B: M不等于0,FQ=0,FN =0,FNAB=0 C: M=0,FQ不等于0, FN =0,FNAB 不等于0 D: M不等于0, FQ=0,FN =0,FNAB不等于0
图示对称结构EI=常数,中点截面C及AB杆内力应满足:( )<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/8e9516cd08c149dc83cbd9f1cb580008.jpg"/> A: M=0,FQ 不等于0,FN =0,FNAB=0 B: M不等于0,FQ=0,FN =0,FNAB=0 C: M=0,FQ不等于0, FN =0,FNAB 不等于0 D: M不等于0, FQ=0,FN =0,FNAB不等于0
图示拱结构中,杆AB的轴力Fnab为:
图示拱结构中,杆AB的轴力Fnab为:
图示拱结构中,杆AB的轴力FNAB为:(
图示拱结构中,杆AB的轴力FNAB为:(
平面桁架受力如图示,杆AB的轴力FNAB应为( )57575858d9221031b7f3dbd60f5086f5.png
平面桁架受力如图示,杆AB的轴力FNAB应为( )57575858d9221031b7f3dbd60f5086f5.png
图示拱结构中 杆AB的轴力FNAB为 QQ 20180521020846 png
图示拱结构中 杆AB的轴力FNAB为 QQ 20180521020846 png