id stringlengths 2 5 | media images listlengths 1 5 | messages stringlengths 309 1k |
|---|---|---|
4814 | [{"role": "user", "question": "如图<image>图示减速器中,1为蜗杆,2为蜗轮,3、4均为斜齿轮,主动釉蜗杆为顺时针旋转,蜗轮为右旋,则蜗杆螺旋线方向为(),若希望\n蜗轮2和小齿轮3的轴向力能抵消一部分,则齿轮3的螺旋线方向为(),齿轮4的轴向力方向为()", "answer": "B", "hint": "", "options": {"A": "左旋；右旋；向上", "B": "右旋；右旋；向上", "C": "右旋；右旋；向下", "D": "左旋；右旋；向下"}, "choices": [], "subject": "technology_and_engineering", "type":... | |
4854 | [{"role": "user", "question": "在下列<image>四种说法中,选择一种正确的答案()", "answer": "C", "hint": "", "options": {"A": "A上B下,C前D后", "B": "A前B后,C上D下", "C": "A后B前,C下D上", "D": "A左B右,C上D下"}, "choices": [], "subject": "technology_and_engineering", "type": "选择", "category": "技术与工程", "subcategory": "机械工程", "subfield": "['机械制图', '机械设计基础', '... | |
5845 | [{"role": "user", "question": "如<image>所示为一轴系结构存在不少错误或不合理的结构，其中序号2的错误为（）。\n", "answer": "C", "hint": "", "options": {"A": "无垫片", "B": "无轴肩", "C": "无间隙、无密封", "D": "无定位"}, "choices": [], "subject": "technology_and_engineering", "type": "选择", "category": "技术与工程", "subcategory": "机械工程", "subfield": "['轴系结构', '机械设计']", "dif... | |
6077 | [{"role": "user", "question": "\n在<image>螺纹连接画法中，正确的A-A断面图是（ ）。", "answer": "C", "hint": "", "options": {"A": "<image>", "B": "<image>", "C": "<image>", "D": "<image>"}, "choices": [], "subject": "technology_and_engineering", "type": "选择", "category": "技术与工程", "subcategory": "建筑学", "subfield": "['结构工程', '建筑设计与分析', '测... | |
6574 | [{"role": "user", "question": "右图<image>为什么电池_", "answer": "A", "hint": "", "options": {"A": "蓄电池", "B": "电容器", "C": "太阳能电池", "D": "燃料电池"}, "choices": [], "subject": "technology_and_engineering", "type": "选择", "category": "技术与工程", "subcategory": "能源和电力", "subfield": "['新能源电池']", "difficulty_level": "easy", "analysis": ... | |
6654 | [{"role": "user", "question": "<image>所示的设备本身的工作原理及结构比较简单，具有明显开断点，有足够的绝缘能力，用以保证人身和设备的安全。但没有专门的灭弧装置，只能通断较小的电流，而不能开断负荷电流，更不能开断短路电流。", "answer": "对", "hint": "", "options": {"A": "-", "B": "-", "C": "-", "D": "-"}, "choices": [], "subject": "technology_and_engineering", "type": "判断", "category": "技术与工程", "subcategory": "能... | |
6836 | [{"role": "user", "question": "如<image>所示构件中A、B点的应力状态。则B点的剪应力为（）MPa。", "answer": "C", "hint": "", "options": {"A": "-50.7", "B": "-50.8", "C": "-50.9", "D": "-51"}, "choices": [], "subject": "technology_and_engineering", "type": "选择", "category": "技术与工程", "subcategory": "材料", "subfield": "['拉伸应力', '材料力学', '轴向拉伸与压缩']", ... | |
7646 | [{"role": "user", "question": "<image>所示当切应力超过材料的剪切比例极限时，剪切胡克定律与切应力互等定理，（）", "answer": "B", "hint": "", "options": {"A": "前者成立，后者不成立", "B": "前者不成立，后者成立", "C": "都成立", "D": "都不成立"}, "choices": [], "subject": "technology_and_engineering", "type": "选择", "category": "技术与工程", "subcategory": "材料", "subfield": "['材料', '剪切胡克定律'... | |
829 | [{"role": "user", "question": "下列电路中能实现交流放大的是图 ( ) ", "answer": "B", "hint": "", "options": {"A": "<image>", "B": "<image>", "C": "<image>", "D": "<image>"}, "choices": [], "subject": "technology_and_engineering", "type": "选择", "category": "技术与工程", "subcategory": "电子学", "subfield": "['交流电路', '电子分析']", "difficulty_leve... | |
8544 | [{"role": "user", "question": "<image>均匀砂质土壤装在容器中,设渗透系数为0.01cm/s,则渗流流速为()", "answer": "C", "hint": "", "options": {"A": "0.003cm/s", "B": "0.004cm/s", "C": "0.005cm/s", "D": "0.01cm/s"}, "choices": [], "subject": "technology_and_engineering", "type": "选择", "category": "技术与工程", "subcategory": "建筑学", "subfield": "['结构工程'... | |
994 | [{"role": "user", "question": "如图<image>所示为__联接。它以两侧面为工作面，与平键一样具有定心较好的优点。", "answer": "A", "hint": "", "options": {"A": "半圆键", "B": "无键", "C": "滑键", "D": "花键"}, "choices": [], "subject": "technology_and_engineering", "type": "选择", "category": "技术与工程", "subcategory": "机械工程", "subfield": "['结构力学', '联接方式']", "difficulty_l... | |
9981 | [{"role": "user", "question": "如图<image>所示为在220V的交流电路中,接入一理想变压器。一次绕组$N_{1} $=10000匹,二次侧电压\n$U_{2} $=44V,负载电阻$R_{L} $=110,试求一次侧电流$I_{1} $__A（以小数形式表示）", "answer": "0.8", "hint": "", "options": {"A": "-", "B": "-", "C": "-", "D": "-"}, "choices": [], "subject": "technology_and_engineering", "type": "填空", "category": "技术与工... |
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