[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fUCeBoeMn-Abd7wuGE7mrhG4S0Dsy-sXY42olh0ZfkIU":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":18,"related":19,"source":27,"type":38},[],"2023-05-09 05:52:21",4394692,[8,9,10,11],"Fs=2kN , M=4kN","Fs=-2kN , M=-4kN","Fs=-2kN , M=4kN","Fs=2kN , M=-4kN",{"courseId":13,"courseImg":14,"courseName":15,"workId":16,"workName":17},"1000007118","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F7855cb8b3eced64f37e9bfd735a0f87c.jpg","材料力学（有实验）","7406082","材料力学（有实验）教程考试","用截面法求图示梁中\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F30b6bbc3265ebd23a130a1ad6a3faadf.png\">截面上的剪力和弯矩.\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F38886e9cb8a3a181a825f94ea7125303.png\">",[20,29,39,48,53,58,61,70,79,88],{"answer":21,"createTime":5,"id":22,"options":23,"question":26,"source":27,"type":28},[],4393236,[24,25],"对","错","竹竿扭转破坏的机理与低碳钢圆轴扭转破坏的机理相同","v2",3,{"answer":30,"createTime":5,"id":31,"options":32,"question":37,"source":27,"type":38},[],4393338,[33,34,35,36],"2倍","4倍","8倍","16倍","实心的圆轴受扭,若将轴的直径减少一半是,则圆轴的扭转角是原来的",0,{"answer":40,"createTime":5,"id":41,"options":42,"question":47,"source":27,"type":38},[],4393339,[43,44,45,46],"平行","45度","90度","60度","竹竿扭转破坏时的破坏面与轴线成",{"answer":49,"createTime":5,"id":50,"options":51,"question":52,"source":27,"type":28},[],4393792,[24,25],"将平面弯曲梁假想截开,左、右两侧截面上的弯矩是作用力与反作用力,因此若一侧是正弯矩,则另一侧就是负弯矩",{"answer":54,"createTime":5,"id":55,"options":56,"question":57,"source":27,"type":28},[],4394009,[24,25],"若平面弯曲梁的结构对称、约束对称、载荷对称,则其剪力图对称、弯矩图对称",{"answer":59,"createTime":5,"id":6,"options":60,"question":18,"source":27,"type":38},[],[8,9,10,11],{"answer":62,"createTime":5,"id":63,"options":64,"question":69,"source":27,"type":38},[],4394696,[65,66,67,68],"Fs=14kN , M=26kN","Fs=14kN , M=-26kN","Fs=-14kN , M=26kN","Fs=-14kN , M=-26kN","用截面法试求下图所示的梁中\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fe2ac637b2b5de014d43569dd77d945bb.webp\">截面上的剪力和弯矩是( ).\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F7a875787b20c1f5e4c7ec2ed2a62bd38.png\">",{"answer":71,"createTime":5,"id":72,"options":73,"question":78,"source":27,"type":38},[],4394807,[74,75,76,77],"F","2Fa","-F","0","简支梁AD受如图所示载荷作用,则该梁B截面的剪力为 .\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F8128d9f875c5866cd25e676ede7a818e.png\">",{"answer":80,"createTime":5,"id":81,"options":82,"question":87,"source":27,"type":38},[],4394827,[83,84,85,86],"Fs图不变,M图变化","Fs图变化,M图不变","Fs、M图都不变","Fs、M图都变化","图示具有中间铰的梁ACB,当集中力F从铰链C的左侧移至右侧时,梁的 .\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff6bdfa6ad3db77d5a015400016b8b671.png\">",{"answer":89,"createTime":5,"id":90,"options":91,"question":96,"source":27,"type":38},[],4395045,[92,93,94,95],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9c578dabdb9418817ea80a6d04e0b5d8.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F02464e51eb92bdda9a762fd8d5e8e474.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F079da59c9a5304c2b1890905b6634a4e.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fc467ab38d24876e845d78c706fdc2d31.png\">","图示等直外伸梁在自重作用下,最大弯矩可能出现在截面A或截面C上.设截面A、C上的剪力分别为FA、FC,弯矩分别为MA、MC,则当梁总长度不变,a增加时, .\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F215b2e09488b3abc19517c9663f37762.png\">"]