如图，套筒零件上表面结构要求最高的表面粗糙度参数Ra的数值为12.5。
举一反三
- 如图，泵体零件上表面结构要求最高的表面粗糙度参数Ra的数值为：<img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201910/5fda39f9582d4bfda7bfc811c36c2860.png" /> A: 0.4 B: 0.8 C: 12.5 D: 6.3 E: 25
- 如图，套筒零件上表面结构要求最高的表面粗糙度参数Ra的数值为12.5。[img=781x604]17d60a64ad6a1e1.png[/img]
- 如图，尺寸正确标注的图形是： A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201910/d7f5cc79b50247069cd9347901587ce7.png"> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201910/25e08fdcfa8d42849b8cce450503b0ef.png"> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201910/0dd480e6dba2481197db009c3b98eac9.png"> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201910/0f8bb7ecb6c74b1290c04861b5c3f7b8.png">
- 已知逻辑函数<img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201910/db3f3ede53184bb3a37a766a36125eab.png" /> 与其相等的函数为 ____。 A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201910/b9f375a5635e41d6911d97ab27bfe708.png" /> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201910/bc54dac1e08f483e88b86be39ec320b1.png" /> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201910/da4ddc58a62f4f35b2fe27419d3e7023.png" /> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201910/9aea77b2ed814b77aed36f7301cd7625.png" />
- 设EI为常数，图示刚架支座C点的水平位移为（ ）。<img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201910/2dea6754bc2a40df98d40ddc4d88e4ee.png"/> A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201910/876c3a939abd447fae12277cbbdf2885.png"/> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201910/9452dbf33f1b42bab8d279978b5294d8.png"/> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201910/c86de891367447249efb95cf363ee7cf.png"/> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201910/ba048b2d5eb149fbbe5a7b419903ef5b.png"/>