| 安全生产基本知识 | |
| 1 |
47:30 598 |
| 2 |
01:33:50 463 |
| 3 |
01:09:35 382 |
| 4 |
01:10:00 379 |
| 专业相关基础知识 | |
| 5 |
52:50 438 |
| 6 |
01:18:20 408 |
| 7 |
01:14:00 517 |
| 8 |
58:00 369 |
| 9 |
57:00 389 |
| 10 |
52:00 389 |
| 11 |
45:00 389 |
| 12 |
47:00 373 |
| 13 |
01:07:00 348 |
| 14 |
57:00 443 |
| 15 |
01:09:00 357 |
建筑电工09