[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$flW18o7KaUKV3wTxUEDN4TDyI1xuqbqkUnqHEMBlXaTA":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2023-11-30 12:33:09",110119897,[8,9,10,11],"A图","B图","C图","D图",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},12,"fb88b757e04abdff4dfc5493d967d633","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F47813fb8e42c12538de60b2c10f63af6.png","材料力学","f40683a7620146eeb76db4ec1a2d6730","知识点测试","下面四种形式的截面,其横截面面积相同,从抗弯强度角度来看,哪种最合理: . \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fbd4b91decb7e027859ebc9f0265fd725.png\">",[21,32,37,40,49,58,68,77,86,95],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],110119893,[25,26,27,28],"16","8","4","2","矩形截面梁,若截面高度和宽度都增加1倍,则其弯曲强度将提高到原来的 倍","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":36,"source":30,"type":31},[],110119895,[11,8,10,9],"图示四种受均布载荷q作用的梁,为了提高承载能力,梁的支座应采用哪种方式安排最合理: . \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F20d4bfc6da78e55ee278d9aaa7e2d87a.webp\">",{"answer":38,"createTime":5,"id":6,"options":39,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":41,"createTime":5,"id":42,"options":43,"question":48,"source":30,"type":31},[],110119899,[44,45,46,47],"离中性轴较远","接近外力作用的纵向对称轴","离中性轴较近","形心周围","为了充分发挥梁的抗弯作用,在选用梁的合理截面时,应尽可能使其截面的材料置于 的地方",{"answer":50,"createTime":5,"id":51,"options":52,"question":57,"source":30,"type":31},[],110119901,[53,54,55,56],"(D)图","(A)图","(B)图","(C)图","用四根角钢组成的梁,在受到铅垂平面内的外力作用而产生纯弯曲时,应将角钢组合成如图所示 的形式即可得到最佳的弯曲强度. \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fa4650ecf22aac5d9bc407218c98cee06.png\">",{"answer":59,"createTime":60,"id":61,"options":62,"question":67,"source":30,"type":31},[],"2023-11-30 12:33:10",110119903,[63,64,65,66],"适当布置载荷","用变截面梁","合理设计截面","将支座向内移","龙门吊车的横梁通常是采取 的方式平提高其承载能力",{"answer":69,"createTime":60,"id":70,"options":71,"question":76,"source":30,"type":31},[],110119905,[72,73,74,75],"同时破坏","(b)梁先坏","不能判断","(a)梁先坏","如图所示两铸铁梁,材料相同,承受相同的荷载F.则当F增大时,破坏的情况是 . \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fded572fa73ac879b7d7394a089bd350e.png\">",{"answer":78,"createTime":60,"id":79,"options":80,"question":85,"source":30,"type":31},[],110119907,[81,82,83,84],"1图","2图","3图","4图","为了提高混凝土梁的抗拉强度,可在梁中配置钢筋.若矩形截面梁的弯矩图如图所示,则梁内钢筋(图中虚线所示)配置最合理的是 \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F551412c184977da54a66d1c62305e455.png\">",{"answer":87,"createTime":60,"id":88,"options":89,"question":94,"source":30,"type":31},[],110119909,[90,91,92,93],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Feaafa2d3800047817af457003e606aed.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fbbf76359ec54225045d48e84e50a778f.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F907fa5656e0d6d26049afa21fdba4921.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F4c8f2a384c0187fccf96af51a4365c28.png\">","已知外径为D,内径为d的空心梁,其抗弯截面系数是",{"answer":96,"createTime":60,"id":97,"options":98,"question":103,"source":30,"type":31},[],110119915,[99,100,101,102],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F51ffe463e2bd8fbb5b585501d3f06dc8.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb2921dd3199119d5df166bf0578da09d.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F29821c49e30ed3f41aead384ead610e8.webp\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F4e5aef6fa6fd0e883186c709708f9966.webp\">","梁的截面为对称的空心矩形,如图所示.这时,梁的抗弯截 面模量W为__________. \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0171c015508380926a5f213ce03a818c.webp\">"]