id stringlengths 2 5 | media images listlengths 1 5 | messages stringlengths 126 710 | answer stringlengths 1 6 | question_type stringclasses 3
values | subject stringclasses 6
values | type stringclasses 3
values | category stringclasses 6
values | subcategory stringlengths 2 9 | subfield stringlengths 6 41 | difficulty_level stringclasses 3
values | analysis stringclasses 6
values |
|---|---|---|---|---|---|---|---|---|---|---|---|
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()", "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": []}] | B | mcq | technology_and_engineering | 选择 | 技术与工程 | 机械工程 | ['机械原理', '固体力学'] | easy | ||
4854 | [{"role": "user", "question": "在下列<image>四种说法中,选择一种正确的答案()", "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": []}] | C | mcq | technology_and_engineering | 选择 | 技术与工程 | 机械工程 | ['机械制图', '机械设计基础', '机械原理'] | easy | ||
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", "hint": "", "options": {"A": "无垫片", "B": "无轴肩", "C": "无间隙、无密封", "D": "无定位"}, "choices": []}] | C | mcq | technology_and_engineering | 选择 | 技术与工程 | 机械工程 | ['轴系结构', '机械设计'] | middle | ||
6077 | [{"role": "user", "question": "\n在<image>螺纹连接画法中，正确的A-A断面图是（ ）。", "hint": "", "options": {"A": "<image>", "B": "<image>", "C": "<image>", "D": "<image>"}, "choices": []}] | C | mcq | technology_and_engineering | 选择 | 技术与工程 | 建筑学 | ['结构工程', '建筑设计与分析', '测绘'] | middle | ||
6574 | [{"role": "user", "question": "右图<image>为什么电池_", "hint": "", "options": {"A": "蓄电池", "B": "电容器", "C": "太阳能电池", "D": "燃料电池"}, "choices": []}] | A | mcq | technology_and_engineering | 选择 | 技术与工程 | 能源和电力 | ['新能源电池'] | easy | ||
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。", "hint": "", "options": {"A": "-", "B": "-", "C": "-", "D": "-"}, "choices": []}] | 对 | open | technology_and_engineering | 判断 | 技术与工程 | 能源和电力 | ['电气工程', '电力设备'] | middle | ||
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。", "hint": "", "options": {"A": "-50.7", "B": "-50.8", "C": "-50.9", "D": "-51"}, "choices": []}] | C | mcq | technology_and_engineering | 选择 | 技术与工程 | 材料 | ['拉伸应力', '材料力学', '轴向拉伸与压缩'] | hard | ||
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，（）", "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": []}] | B | mcq | technology_and_engineering | 选择 | 技术与工程 | 材料 | ['材料', '剪切胡克定律', '切应力互等定理'] | middle | ||
829 | [{"role": "user", "question": "下列电路中能实现交流放大的是图 ( ) ", "hint": "", "options": {"A": "<image>", "B": "<image>", "C": "<image>", "D": "<image>"}, "choices": []}] | B | mcq | technology_and_engineering | 选择 | 技术与工程 | 电子学 | ['交流电路', '电子分析'] | middle | ||
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()", "hint": "", "options": {"A": "0.003cm/s", "B": "0.004cm/s", "C": "0.005cm/s", "D": "0.01cm/s"}, "choices": []}] | C | mcq | technology_and_engineering | 选择 | 技术与工程 | 建筑学 | ['结构工程', '土木工程'] | middle | ||
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。", "hint": "", "options": {"A": "半圆键", "B": "无键", "C": "滑键", "D": "花键"}, "choices": []}] | A | mcq | technology_and_engineering | 选择 | 技术与工程 | 机械工程 | ['结构力学', '联接方式'] | easy | ||
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）", "hint": "", "options": {"A": "-", "B": "-", "C": "-", "D": "-"}, "choices": []}] | 0.8 | numeric | technology_and_engineering | 填空 | 技术与工程 | 电子学 | ['电磁学', '电路计算', '电力系统'] | middle |
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