【单选题】【消耗次数：1】
两根跨度相等的简支梁，内力相等的条件是（ ）。
①
截面面积相等
②
截面形状相同
③
材料相同
④
外荷载相同
参考答案：
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相关题目
【单选题】
两根等截面连续梁，其跨度、支承和荷载作用均完全相同，但截面形状，尺寸及所用的材料不同（即两根梁的EI值不同）。如不考虑两根梁自重的影响，则两根梁的内力。（ ）
①
完全相同；
②
不同，截尺形状（即I）大的内力大；
③
不同，截面尺寸大有内力小
④
不同，E大的内力小。
【多选题】
横截面面积相等、材料不同的两等截面直杆，承受相同的轴向拉力，则两杆的( )。
①
轴力相同
②
横截面上的正应力也相同
③
轴力不同
④
横截面上的正应力也不同
⑤
线应变相同
随机题目
【单选题】
下列食物中属于优质蛋白的是( )。
①
Normal
0
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2
false
false
false
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大米
②
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
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mso-fareast-theme-font:minor-fareast;
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mso-bidi-theme-font:minor-bidi;
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豆腐
③
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
MicrosoftInternetExplorer4
/* Style Definitions */
table.MsoNormalTable
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font-family:"Calibri","sans-serif";
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mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:宋体;
mso-fareast-theme-font:minor-fareast;
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mso-hansi-theme-font:minor-latin;
mso-bidi-font-family:"Times New Roman";
mso-bidi-theme-font:minor-bidi;
mso-font-kerning:1.0pt;}
山药
④
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
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mso-bidi-theme-font:minor-bidi;
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年糕
【单选题】
椅深实质椅面前后的长度，合适的椅深为（ ）
①
儿童大腿的后3/4应置于椅面上
②
儿童大腿的后1/2应置于椅面上
③
儿童大腿的4/5应置于椅面上
④
儿童小腿的后面不留空隙
【单选题】
佝偻病的发生是由于缺乏（ ）．
①
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②
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③
Normal 0 7.8 磅 0 2 false false false EN-US ZH-CN X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:普通表格; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.5pt; mso-bidi-font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:宋体; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi; mso-font-kerning:1.0pt;}维生素Ｃ
④
Normal 0 7.8 磅 0 2 false false false EN-US ZH-CN X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:普通表格; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.5pt; mso-bidi-font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:宋体; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi; mso-font-kerning:1.0pt;}维生素Ｄ