| 安全生产基本知识 | |
| 1 |
47:30 483 |
| 2 |
01:33:50 447 |
| 3 |
01:09:35 435 |
| 4 |
01:10:00 358 |
| 专业相关基础知识 | |
| 5 |
52:50 528 |
| 6 |
01:18:20 356 |
| 7 |
01:14:00 389 |
| 8 |
58:00 416 |
| 9 |
57:00 376 |
| 10 |
52:00 387 |
| 11 |
45:00 370 |
| 12 |
47:00 384 |
| 13 |
01:07:00 455 |
| 14 |
57:00 402 |
| 15 |
01:09:00 417 |
建筑电工06